IBM TotalStorage DS4300 Fibre Channel Storage Subsystem

IBM TotalStorage DS4300
Fibre Channel Storage Subsystem
Installation, User’s, and Maintenance Guide
GC26-7722-02
IBM TotalStorage DS4300
Fibre Channel Storage Subsystem
Installation, User’s, and Maintenance Guide
GC26-7722-02
Note: Before using this information and the product it supports, be sure to read the safety information in “Safety” on page iii and
general information in “Notices” on page 159.
Third Edition (October 2006)
© Copyright International Business Machines Corporation 2005, 2006. All rights reserved.
US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.
Safety
Before installing this product, read the Safety information.
Antes de instalar este produto, leia as Informações de Segurança.
Pred instalací tohoto produktu si prectete prírucku bezpecnostních instrukcí.
Læs sikkerhedsforskrifterne, før du installerer dette produkt.
Lees voordat u dit product installeert eerst de veiligheidsvoorschriften.
Ennen kuin asennat tämän tuotteen, lue turvaohjeet kohdasta Safety Information.
Avant d’installer ce produit, lisez les consignes de sécurité.
Vor der Installation dieses Produkts die Sicherheitshinweise lesen.
Prima di installare questo prodotto, leggere le Informazioni sulla Sicurezza.
Les sikkerhetsinformasjonen (Safety Information) før du installerer dette produktet.
Antes de instalar este produto, leia as Informações sobre Segurança.
© Copyright IBM Corp. 2005, 2006
iii
Antes de instalar este producto, lea la información de seguridad.
Läs säkerhetsinformationen innan du installerar den här produkten.
The following Caution notices are printed in English throughout this document. For
translations of these notices, refer to IBM Safety Information.
Statement 3
CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or
transmitters) are installed, note the following:
v Do not remove the covers. Removing the covers of the laser product could result in
exposure to hazardous laser radiation. There are no serviceable parts inside the
device.
v Use of controls or adjustments or performance of procedures other than those
specified herein might result in hazardous radiation exposure.
Danger
Some laser products contain an embedded Class 3A or Class 3B laser diode. Note the
following.
Laser radiation when open. Do not stare into the beam, do not view directly with optical
instruments, and avoid direct exposure to the beam.
Class 1 laser statement
Class 1 Laser Product
Laser Klasse 1
Laser Klass 1
Luokan 1 Laserlaite
Appareil A` Laser de Classe 1
IEC 825-1:1993 CENELEC EN 60 825
Statement 4
≥18 kg (37 lbs)
≥32 kg (70.5 lbs)
CAUTION:
Use safe practices when lifting.
iv
≥55 kg (121.2 lbs)
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Statement 5
CAUTION:
The power control button on the device and the power supply do not turn off the
electrical current supplied to the device. The device also might have more than one
power cord. To remove all electrical current from the device, ensure that all power
cords are disconnected from the power source.
2
1
Statement 8:
CAUTION:
Never remove the cover on a power supply or any part that has the following
label attached.
Hazardous voltage, current, and energy levels are present inside any
component that has this label attached. There are no serviceable parts inside
these components. If you suspect a problem with one of these parts, contact
a service technician.
Safety
v
vi
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Contents
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
About this document . . . . . .
FAStT product renaming . . . . . .
Who should read this document . . .
How this document is organized . . .
DS4000 Storage Subsystem installation
Notices used in this document . . . .
Figures used in this document . . . .
Getting information, help, and service .
Before you call. . . . . . . . .
Using the documentation . . . . .
Web sites . . . . . . . . . .
Software service and support . . .
Hardware service and support . . .
Fire suppression systems . . . .
How to send your comments . . . .
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Chapter 1. Introduction . . . . . . . . . . . .
Product updates . . . . . . . . . . . . . . .
IBM DS4300 Model 6LU/6LX . . . . . . . . . .
DS4300 Model 60U/60X . . . . . . . . . . . .
IBM DS4300 Model 60U/60X with Turbo option . . .
DS4000 EXP storage expansion enclosures . . . .
Features at a glance . . . . . . . . . . . . .
Clustering support . . . . . . . . . . . . . .
Inventory checklist . . . . . . . . . . . . . .
Handling static-sensitive devices . . . . . . . . .
Best practices guidelines . . . . . . . . . . .
Storage subsystem components . . . . . . . .
Front view . . . . . . . . . . . . . . . .
Back view . . . . . . . . . . . . . . . .
Interface ports and switches . . . . . . . . .
Software and hardware compatibility and upgrades
Software and firmware support code upgrades . .
DS4300 hardware and software compatibility . . .
Determining firmware levels . . . . . . . .
Specifications . . . . . . . . . . . . .
Shock and vibration requirements . . . . . . .
Heat output, airflow, and cooling . . . . . . .
Chapter 2. Installing and configuring the
Getting started . . . . . . . . . . .
Rack mounting template and instructions .
Installing the storage subsystem in a rack .
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subsystem
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Chapter 3. Cabling the storage subsystem . . . . . . . . . . . . . . 29
Setting server/tray ID settings . . . . . . . . . . . . . . . . . . . 29
Working with SFPs and fiber-optic cables . . . . . . . . . . . . . . . 30
© Copyright IBM Corp. 2005, 2006
vii
Types of interface ports . . . . . . . . . . . . . . . . . . . . .
Host ports . . . . . . . . . . . . . . . . . . . . . . . . .
Expansion ports (also referred to as drive ports) . . . . . . . . . .
Ethernet ports . . . . . . . . . . . . . . . . . . . . . . .
Handling fiber-optic cables . . . . . . . . . . . . . . . . . . .
Installing SFP modules . . . . . . . . . . . . . . . . . . . . .
Removing SFP modules . . . . . . . . . . . . . . . . . . . .
Using LC-LC fibre-channel cables . . . . . . . . . . . . . . . . .
Connecting an LC-LC cable to an SFP module . . . . . . . . . . .
Removing an LC-LC fibre-channel cable . . . . . . . . . . . . .
Using LC-SC fibre-channel cable adapters . . . . . . . . . . . . . .
Connecting an LC-SC cable adapter to a device . . . . . . . . . .
Removing an LC-LC cable from an LC-SC cable adapter . . . . . . .
Installing fiber-optic cables . . . . . . . . . . . . . . . . . . .
Fibre channel connections . . . . . . . . . . . . . . . . . . . .
Redundant drive loop cabling overview . . . . . . . . . . . . . . .
Connecting storage expansion enclosures to the DS4300 . . . . . . . . .
Supported storage expansion enclosure configurations and intermix
combinations . . . . . . . . . . . . . . . . . . . . . . . .
Overview: Connecting storage expansion enclosures to a storage subsystem
General rules and recommendations for cabling storage expansion
enclosures. . . . . . . . . . . . . . . . . . . . . . . .
Storage expansion enclosure cabling diagrams . . . . . . . . . . .
Steps for connecting storage expansion enclosures to a storage
subsystem . . . . . . . . . . . . . . . . . . . . . . . .
Configuring the drive loops with storage expansion enclosures . . . . . . .
Using EXP100, EXP700, or EXP710 storage expansion enclosures . . . .
Connecting EXP100, EXP700, or EXP710 in a redundant pair of drive loop
Connecting the redundant EXP100, EXP700, or EXP710 drive loop to the
DS4300 . . . . . . . . . . . . . . . . . . . . . . . . .
Using EXP810 storage expansion enclosures . . . . . . . . . . . .
Connecting EXP810 in a redundant pair of drive loop . . . . . . . . .
Connecting the redundant EXP810 drive loop to the DS4300 . . . . . .
One DS4300 and two or more storage expansion enclosures in a mixed
configuration . . . . . . . . . . . . . . . . . . . . . . . .
Host fibre channel connections . . . . . . . . . . . . . . . . . . .
Installing the storage subsystem configuration . . . . . . . . . . . .
DS4300 dual-controller storage subsystem (Model 60U/60X) configurations
DS4300 single-controller storage subsystem (Model 6LU/6LX) configurations
Connecting hosts to the RAID controllers . . . . . . . . . . . . . . .
Steps for connecting hosts to a DS4300 dual-controller storage subsystem
(Model 60U/60X) . . . . . . . . . . . . . . . . . . . . . .
Steps for connecting hosts to a DS4300 single-controller storage subsystem
(Model 6LU/6LX) . . . . . . . . . . . . . . . . . . . . . .
Configuring the storage subsystem . . . . . . . . . . . . . . . . .
Storage subsystem management methods . . . . . . . . . . . . . .
Host-agent management method . . . . . . . . . . . . . . . .
Direct-management method . . . . . . . . . . . . . . . . . .
Connecting secondary interface cables . . . . . . . . . . . . . . . .
DS4300 single-controller storage subsystem (Model 6LU/6LX) . . . . . .
DS4300 dual-controller storage subsystem (Model 60U/60X) . . . . . . .
Power cabling . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the storage-management software . . . . . . . . . . . . . .
Setting up IP addresses for DS4000 storage controllers . . . . . . . . . .
Steps for setting up the DHCP/BOOTP server and network . . . . . . .
Steps for assigning static TCP/IP addresses to the DS4000 controllers . . .
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viii
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Chapter 4. Operating the storage subsystem . . . .
Performing the DS4000 Health Check process . . . .
Web pages . . . . . . . . . . . . . . . .
Hardware responsibilities . . . . . . . . . . .
Turning the storage subsystem on and off . . . . . .
Turning on the storage subsystem . . . . . . . .
Turning off the storage subsystem . . . . . . . .
Restoring power after an unexpected shutdown . . . .
Performing an emergency shutdown . . . . . . .
Restoring power after an emergency shutdown . . .
Restoring power after an over-temperature shutdown .
Monitoring status through software . . . . . . . .
Firmware updates . . . . . . . . . . . . . . .
Checking the LEDs . . . . . . . . . . . . . .
Cache memory and RAID controller battery . . . . .
Cache memory . . . . . . . . . . . . . .
RAID controller cache battery . . . . . . . . .
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Chapter 5. Installing and replacing components . . . . . . . . .
Handling static-sensitive devices . . . . . . . . . . . . . . . .
Upgrading your RAID controllers . . . . . . . . . . . . . . . .
Upgrading DS4300 Model 6LU/6LX to Model 60U/60X . . . . . . .
Steps for upgrading from DS4300 Model 6LU/6LX to Model 60U/60X
Upgrading the DS4300 Model 60U/60X from standard to Turbo option
Steps for hot-swap RAID controller upgrade . . . . . . . . . .
Steps for cold-swap RAID controller upgrade . . . . . . . . .
Working with hot-swap drives . . . . . . . . . . . . . . . . .
Installing hot-swap drives . . . . . . . . . . . . . . . . .
Replacing hot-swap drives . . . . . . . . . . . . . . . . .
Upgrading drives . . . . . . . . . . . . . . . . . . . . . .
Adding larger-capacity drives . . . . . . . . . . . . . . . .
Replacing all drives at the same time . . . . . . . . . . . . .
Replacing the drives one at a time . . . . . . . . . . . . . .
Working with hot-swap cooling fans . . . . . . . . . . . . . . .
Working with hot-swap power supplies (dual-controller models only) . . .
Removing a hot-swap power supply . . . . . . . . . . . . . .
Installing a hot-swap power supply . . . . . . . . . . . . . .
Working with hot-swap RAID controllers (dual-controller models only) . .
Replacing a RAID controller. . . . . . . . . . . . . . . . .
Replacing the battery in the RAID controller . . . . . . . . . . . .
Installing SFPs and fiber-optic cables . . . . . . . . . . . . . .
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Chapter 6. Solving problems .
General checkout . . . . .
Using the diagnostic hardware .
Troubleshooting . . . . . .
Parts listing . . . . . . . .
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Appendix A. Records . . . . . . . . . . . . . . . . . . . . . 155
Identification numbers . . . . . . . . . . . . . . . . . . . . . . 155
Installed-device records . . . . . . . . . . . . . . . . . . . . . 155
Appendix B. Accessibility . . . . . . . . . . . . . . . . . . . . 157
Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . 159
Contents
ix
Important notes . . . . . . . . . . . . . . . . . . . . .
Electronic emission notices . . . . . . . . . . . . . . . . .
Federal Communications Commission (FCC) statement . . . . .
Chinese class A compliance statement. . . . . . . . . . . .
Industry Canada Class A emission compliance statement . . . . .
Australia and New Zealand Class A statement . . . . . . . . .
United Kingdom telecommunications safety requirement . . . . .
European Union EMC Directive conformance statement . . . . .
Taiwan electrical emission statement . . . . . . . . . . . .
Japanese Voluntary Control Council for Interference (VCCI) statement
Power cords . . . . . . . . . . . . . . . . . . . . . .
Glossary
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Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Proof of Entitlement . . . . . . . . . . . . . . . . . . . . . . 187
x
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Figures
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1. DS4300 storage subsystem front controls and components . . . . . . . . . . . . . . .
2. DS4300 dual-controller storage subsystem (model 60U and 60X) back view . . . . . . . . .
3. DS4300 single-controller storage subsystem (model 6LU and 6LX) back view . . . . . . . .
4. DS4300 dual-controller storage subsystem (model 60U and 60X) interface ports and switches
5. Example of Cold Aisle/Hot Aisle Rack Configuration . . . . . . . . . . . . . . . . . .
6. Front rack mounting template . . . . . . . . . . . . . . . . . . . . . . . . . .
7. Rear rack mounting template . . . . . . . . . . . . . . . . . . . . . . . . . .
8. Rack nut installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9. Rail extension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10. Rail adjustment screws . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11. RAID controller removal . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12. Hot-swap fan removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13. Power supply removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14. Hard disk drive removal . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15. Server installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16. Setting the Server ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17. Location of host ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18. Location of drive ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19. Location of Ethernet ports . . . . . . . . . . . . . . . . . . . . . . . . . . .
20. SFP Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21. Installing an SFP module into the host port . . . . . . . . . . . . . . . . . . . . .
22. Unlocking the SFP module latch - plastic variety . . . . . . . . . . . . . . . . . . .
23. Unlocking the SFP module latch - wire variety . . . . . . . . . . . . . . . . . . . .
24. LC-LC fibre-channel cable . . . . . . . . . . . . . . . . . . . . . . . . . . .
25. Removing fiber-optic cable protective caps . . . . . . . . . . . . . . . . . . . . .
26. Inserting an LC-LC fibre-channel cable into an SFP module . . . . . . . . . . . . . . .
27. LC-LC fibre-channel cable lever and latches . . . . . . . . . . . . . . . . . . . . .
28. Removing the LC-LC fibre-channel cable . . . . . . . . . . . . . . . . . . . . . .
29. LC-SC fibre-channel cable adapter . . . . . . . . . . . . . . . . . . . . . . . .
30. Removing the LC-SC cable adapter protective caps . . . . . . . . . . . . . . . . . .
31. Connecting an LC-LC cable into the LC-SC cable adapter . . . . . . . . . . . . . . .
32. LC-LC fibre-channel cable lever and latches . . . . . . . . . . . . . . . . . . . . .
33. Removing the LC-LC fibre-channel cable from an LC-SC fibre-channel cable adapter . . . . .
34. Removing caps from fiber-optic cables . . . . . . . . . . . . . . . . . . . . . . .
35. Connecting cables to the installed SFP. . . . . . . . . . . . . . . . . . . . . . .
36. Redundant drive loop cabling overview . . . . . . . . . . . . . . . . . . . . . . .
37. Correct cabling for an intermix of EXP100, EXP710, and EXP810 storage expansion enclosure
(example 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
38. Correct cabling for an intermix of EXP100, EXP710, and EXP810 storage expansion enclosure
(example 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
39. Incorrect cabling for an intermix of EXP100, EXP710, and EXP810 storage expansion enclosure
(example 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
40. Incorrect cabling for an intermix of EXP100, EXP710, and EXP810 storage expansion enclosure
(example 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
41. Cabling to 14-drive storage expansion enclosure ESM ports . . . . . . . . . . . . . . .
42. Correct cabling for EXP810 IB ports to the DS4300 expansion (or drive) port (example 1) . . . .
43. Incorrect cabling for EXP810 IA port to the DS4300 expansion (or drive) port (example 1) . . . .
44. Connecting two EXP100, EXP700, or EXP710 storage expansion enclosures into drive loop A
45. EXP100, EXP700, or EXP710 storage expansion enclosure ESM board In and Out ports . . . .
46. Connecting two EXP100, EXP700, or EXP710 storage expansion enclosures into redundant drive
loop B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
47. Connecting additional EXP500, EXP100, EXP700, or EXP710 storage expansion enclosures to
drive loops A and B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
© Copyright IBM Corp. 2005, 2006
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48. Connecting EXP100, EXP700, or EXP710 drive loop A to the DS4300 . . . . . . . . . . . 65
49. Connecting redundant EXP100, EXP700, or EXP710 drive loops to the DS4300 . . . . . . . 66
50. Connecting two EXP810 storage expansion enclosures into drive loop A . . . . . . . . . . 67
51. EXP810 storage expansion enclosure ESM board ports 1A and 1B . . . . . . . . . . . . 67
52. Connecting two EXP810 storage expansion enclosures into redundant drive loop B . . . . . . 68
53. Connecting additional EXP810 storage expansion enclosures to drive loops A and B . . . . . . 69
54. Connecting EXP810 drive loop A to the DS4300 . . . . . . . . . . . . . . . . . . . 70
55. Connecting redundant EXP810 drive loops to the DS4300 . . . . . . . . . . . . . . . 71
56. One DS4300 and two or more storage expansion enclosures in a mixed environment —
Recommended cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
57. Redundant host and drive Fibre Channel loop configurations (Model 60U/60X) . . . . . . . . 76
58. Example of a single-SAN fabric zone configuration (Model 60U/60X) . . . . . . . . . . . . 77
59. Example of a dual-SAN fabric zone configuration (Model 60U/60X) . . . . . . . . . . . . 77
60. Example of a two-cluster configuration (Model 60U/60X) . . . . . . . . . . . . . . . . 78
61. Example of a single server configuration with one adapter (Model 6LU/6LX) . . . . . . . . . 78
62. Example of a single server configuration with two adapters (Model 6LU/6LX) . . . . . . . . . 79
63. Example of a dual-server configuration with one adapter on each server (Model 6LU/6LX) . . . . 79
64. Example of a dual-server, single-SAN fabric zone configuration with one adapter on each server
(Model 6LU/6LX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
65. Example of a dual-server, dual-SAN fabric zone configuration with two adapters per server (Model
6LU/6LX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
66. Location of host cables (Model 60U/60X) . . . . . . . . . . . . . . . . . . . . . . 81
67. Location of host cables (Model 6LU/6LX) . . . . . . . . . . . . . . . . . . . . . . 82
68. Host-agent managed storage subsystems . . . . . . . . . . . . . . . . . . . . . 83
69. Direct-managed storage subsystems . . . . . . . . . . . . . . . . . . . . . . . 84
70. Ethernet and serial port locations . . . . . . . . . . . . . . . . . . . . . . . . . 85
71. Power cord locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
72. Redundant ac power connections to controllers and storage expansion enclosures . . . . . . 86
73. DS4300 storage subsystem LEDs (front) . . . . . . . . . . . . . . . . . . . . . . 98
74. DS4300 RAID controller LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . 99
75. DS4300 storage subsystem fan and power supply LEDs . . . . . . . . . . . . . . . . 101
76. DS4300 storage subsystem cache active LED . . . . . . . . . . . . . . . . . . . 102
77. DS4300 storage subsystem battery LED . . . . . . . . . . . . . . . . . . . . . . 103
78. RAID controller levers and labels . . . . . . . . . . . . . . . . . . . . . . . . 110
79. Location of SFPs and fiber-optic cables . . . . . . . . . . . . . . . . . . . . . . 112
80. Unlocking the SFP module latch - plastic variety . . . . . . . . . . . . . . . . . . . 112
81. Unlocking the SFP module latch - wire variety . . . . . . . . . . . . . . . . . . . . 113
82. Pull-rings for removing a controller . . . . . . . . . . . . . . . . . . . . . . . . 113
83. RAID controller levers and labels . . . . . . . . . . . . . . . . . . . . . . . . 116
84. Location of SFPs and fiber-optic cables . . . . . . . . . . . . . . . . . . . . . . 117
85. Unlocking the SFP module latch - plastic variety . . . . . . . . . . . . . . . . . . . 118
86. Unlocking the SFP module latch - wire variety . . . . . . . . . . . . . . . . . . . . 118
87. Pull-rings for removing a controller . . . . . . . . . . . . . . . . . . . . . . . . 119
88. Location of hot-swap drives . . . . . . . . . . . . . . . . . . . . . . . . . . 120
89. Releasing the drive latch . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
90. Drive latch on a hot-swap drive . . . . . . . . . . . . . . . . . . . . . . . . . 124
91. Fan locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
92. Removing a fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
93. Power supply controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
94. Lever for power supply removal . . . . . . . . . . . . . . . . . . . . . . . . . 132
95. Installing a hot-swap power supply . . . . . . . . . . . . . . . . . . . . . . . . 133
96. Connecting the power cord to the AC power connector . . . . . . . . . . . . . . . . 134
97. RAID controller levers and labels . . . . . . . . . . . . . . . . . . . . . . . . 135
98. Location of SFPs and fiber-optic cables . . . . . . . . . . . . . . . . . . . . . . 136
99. Unlocking the SFP module latch - plastic variety . . . . . . . . . . . . . . . . . . . 137
100. Unlocking the SFP module latch - wire variety . . . . . . . . . . . . . . . . . . . 137
xii
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
101. Pull-rings for removing a controller . .
102. Controller battery-access panel screws
103. Removing the controller battery . . .
104. Installing a new RAID controller . . .
105. DS4300 storage subsystem parts list .
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Tables
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Mapping of FAStT names to DS4000 Series names . . . . . . . . . . . . . . . . . . xvii
Where to find DS4000 installation and configuration procedures . . . . . . . . . . . . . xix
Additional EXP700/EXP710 storage features available for the DS4300 storage subsystem . . . . 6
Features at a glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Software and firmware levels for the DS4300 storage subsystem . . . . . . . . . . . . . 15
DS4300 hardware and software compatibility . . . . . . . . . . . . . . . . . . . . 16
DS4300 storage subsystem operating specifications . . . . . . . . . . . . . . . . . . 18
Random Vibration Power Spectral Density . . . . . . . . . . . . . . . . . . . . . 19
Storage expansion enclosure configurations for DS4300 dual-controller Turbo models only
47
Support for new storage expansion enclosures within a DS4300 drive loop . . . . . . . . . 49
Possible combinations of 14-drive and 16-drive storage expansion enclosures per drive loop for
DS4300 dual controller Turbo models only . . . . . . . . . . . . . . . . . . . . . 50
Possible combinations of 14-drive and 16-drive storage expansion enclosures per drive loop for
DS4300 standard model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
DS4300 storage subsystem LEDs (front) . . . . . . . . . . . . . . . . . . . . . . 98
DS4300 RAID controller LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . 99
DS4300 storage subsystem fan LED . . . . . . . . . . . . . . . . . . . . . . . 101
DS4300 storage subsystem power supply LEDs . . . . . . . . . . . . . . . . . . . 101
Storage subsystem troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 145
DS4000 Storage Manager alternate keyboard operations . . . . . . . . . . . . . . . 157
© Copyright IBM Corp. 2005, 2006
xv
xvi
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
About this document
This guide provides instructions on how to install and configure the IBM®
TotalStorage® DS4300 Fibre Channel Storage Subsystem.
FAStT product renaming
IBM has renamed some FAStT family products. Table 1 identifies each DS4000
product name with its corresponding previous FAStT product name. Note that this
change of product name only indicates no change in functionality or warranty. All
products listed below with new names are functionally-equivalent and
fully-interoperable. Each DS4000 product retains full IBM service as outlined in
service contracts issued for analogous FAStT products.
Table 1. Mapping of FAStT names to DS4000 Series names
Previous FAStT Product Name
Current DS4000 Product Name
IBM TotalStorage FAStT Storage Server
IBM TotalStorage DS4000
FAStT
DS4000
FAStT Family
DS4000 Mid-range Disk System
FAStT Storage Manager vX.Y (for example
v9.10)
DS4000 Storage Manager vX.Y (for example
v9.10)
FAStT100
DS4100
FAStT600
DS4300
FAStT600 with Turbo Feature
DS4300 Turbo
FAStT700
DS4400
FAStT900
DS4500
EXP700
DS4000 EXP700
EXP710
DS4000 EXP710
EXP100
DS4000 EXP100
FAStT FlashCopy
FlashCopy for DS4000
FAStT VolumeCopy
VolumeCopy for DS4000
FAStT Remote Mirror (RM)
Enhanced Remote Mirroring for DS4000
FAStT Synchronous Mirroring
Metro Mirroring for DS4000
Global Copy for DS4000
(New Feature = Asynchronous Mirroring
without Consistency Group)
Global Mirroring for DS4000
(New Feature = Asynchronous Mirroring with
Consistency Group)
Who should read this document
This document is intended for system operators and service technicians who have
extensive knowledge of Fibre Channel and network technology.
© Copyright IBM Corp. 2005, 2006
xvii
How this document is organized
Chapter 1, “Introduction,” on page 1 describes the storage subsystem. This chapter
includes an overview of the storage subsystem features and components.
Chapter 2, “Installing and configuring the storage subsystem,” on page 21 contains
information about installing the storage subsystem configuration and gives Fibre
Channel loop configuration examples.
Chapter 3, “Cabling the storage subsystem,” on page 29 contains information about
cabling the storage subsystem to other devices.
Chapter 4, “Operating the storage subsystem,” on page 89 describes the tasks that
are required to operate the storage subsystem, including the proper sequences for
powering the storage subsystem on and off.
Chapter 5, “Installing and replacing components,” on page 105 contains
step-by-step instructions for installing and removing the storage subsystem
components.
Chapter 6, “Solving problems,” on page 145 contains storage subsystem problem
symptoms and possible solutions.
Appendix A, “Records,” on page 155 provides a form on which you can record and
update important information about the storage subsystem, including serial number
and device records. When you add components to the storage subsystem, be sure
to update the information in this appendix.
Appendix B, “Accessibility,” on page 157 provides information about DS4000
Storage Manager accessibility features, which help a user who has a physical
disability, such as restricted mobility or limited vision, to use software products
successfully.
DS4000 Storage Subsystem installation tasks - General overview
Table 2 on page xix provides a sequential list of many installation and configuration
tasks that are common to most DS4000 configurations. When you install and
configure your DS4000 storage subsystem, refer to this table to find the
documentation that explains how to complete each task.
See also: The DS4000 Storage Server and Storage Expansion Enclosure Quick
Start Guide provides an excellent overview of the installation process.
xviii
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Table 2. Where to find DS4000 installation and configuration procedures
1
Installation task
Where to find information or procedures
Plan the installation
v DS4000 Storage Manager Concepts Guide
v DS4000 Storage Manager Installation and Support Guide for
AIX, HP-UX, Solaris and Linux on POWER
v DS4000 Storage Manager Installation and Support Guide for
Windows 2000/Server 2003, NetWare, ESX Server, and
Linux
v DS4100 Storage Subsystem Installation, User’s, and
Maintenance Guide
v DS4200 Express Storage Subsystem Installation, User’s, and
Maintenance Guide
v DS4300 Fibre Channel Storage Subsystem Installation,
User’s, and Maintenance Guide
v DS4400 Fibre Channel Storage Subsystem Installation and
Support Guide
v DS4500 Fibre Channel Storage Subsystem Installation and
Support Guide
v DS4700 Storage Subsystem Installation, User’s, and
Maintenance Guide
v DS4800 Storage Subsystem Installation, User’s, and
Maintenance Guide
2
Mount the DS4000
v DS4800 Installation, User’s, and Maintenance Guide
storage subsystem in
v DS4700 Installation, User’s, and Maintenance Guide
the rack
v DS4400 and DS4500 Rack Mounting Instructions
v DS4300 Rack Mounting Instructions
v DS4200 Express Installation, User’s, and Maintenance Guide
v DS4100 Installation, User’s and Maintenance Guide
3
Mount the DS4000
v DS4000 EXP100 Storage Expansion Unit Installation, User’s
EXP storage
and Maintenance Guide
expansion unit in the
v DS4000 EXP420 Storage Expansion Enclosures Installation,
rack
User’s, and Maintenance Guide
v DS4000 EXP700 and EXP710 Storage Expansion Enclosures
Installation, User’s, and Maintenance Guide
v DS4000 EXP810 Storage Expansion Enclosures Installation,
User’s, and Maintenance Guide
v FAStT EXP500 Installation and User’s Guide
4
Route the storage
expansion unit Fibre
Channel cables
v DS4100 Fibre Channel Cabling Instructions
v DS4200 Express Installation, User’s, and Maintenance Guide
v DS4300 Fibre Channel Cabling Instructions
v DS4400 Fibre Channel Cabling Instructions
v DS4500 Fibre Channel Cabling Instructions
v DS4700 Installation, User’s, and Maintenance Guide
v DS4800 Installation, User’s, and Maintenance Guide
About this document
xix
Table 2. Where to find DS4000 installation and configuration procedures (continued)
Installation task
5
Where to find information or procedures
Route the host
v DS4100 Fibre Channel Cabling Instructions
server Fibre Channel
v DS4200 Express Installation, User’s, and Maintenance Guide
cables
v DS4300 Fibre Channel Cabling Instructions
v DS4400 Fibre Channel Cabling Instructions
v DS4500 Fibre Channel Cabling Instructions
v DS4700 Installation, User’s, and Maintenance Guide
v DS4800 Installation, User’s, and Maintenance Guide
6
Power up the
subsystem
v DS4100 Storage Subsystem Installation, User’s, and
Maintenance Guide
v DS4200 Express Storage Subsystem Installation, User’s, and
Maintenance Guide
v DS4300 Fibre Channel Storage Subsystem Installation,
User’s, and Maintenance Guide
v DS4400 Fibre Channel Storage Subsystem Installation and
Support Guide
v DS4500 Fibre Channel Storage Subsystem Installation and
Support Guide
v DS4700 Storage Subsystem Installation, User’s, and
Maintenance Guide
v DS4800 Storage Subsystem Installation, User’s, and
Maintenance Guide
7
Configure DS4000
network settings
v DS4100 Storage Subsystem Installation, User’s, and
Maintenance Guide
v DS4200 Express Storage Subsystem Installation, User’s, and
Maintenance Guide
v DS4300 Fibre Channel Storage Subsystem Installation,
User’s and Maintenance Guide
v DS4400 Fibre Channel Storage Subsystem Installation and
Support Guide
v DS4500 Fibre Channel Storage Subsystem Installation and
Support Guide
v DS4700 Storage Subsystem Installation, User’s, and
Maintenance Guide
v DS4800 Storage Subsystem Installation, User’s, and
Maintenance Guide
8
Zone the fabric
switch
(SAN-attached only)
v DS4000 Storage Manager Installation and Support Guide for
AIX, HP-UX, Solaris and Linux on POWER
v DS4000 Storage Manager Installation and Support Guide for
Windows 2000/Server 2003, NetWare, ESX Server, and
Linux
v DS4000 Storage Manager Copy Services Guide (describes
switch zoning for the Remote Mirror Option)
v See also the documentation provided by the switch
manufacturer
xx
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Table 2. Where to find DS4000 installation and configuration procedures (continued)
9
10
Installation task
Where to find information or procedures
Install DS4000
Storage Manager
software on the
management station
v DS4000 Storage Manager Installation and Support Guide for
AIX, HP-UX, Solaris and Linux on POWER
Install host software
(failover drivers) on
host server
11
Start DS4000
Storage Manager
12
Set the DS4000
Storage Manager
clock
13
Set the DS4000
Storage Manager
host default type
14
Verify DS4000
subsystem health
v DS4000 Storage Manager Installation and Support Guide for
Windows 2000/Server 2003, NetWare, ESX Server, and
Linux
v DS4000 Storage Manager online help (for post-installation
tasks)
v DS4100 Storage Subsystem Installation, User’s, and
Maintenance Guide
v DS4200 Express Storage Subsystem Installation, User’s, and
Maintenance Guide
v DS4300 Fibre Channel Storage Subsystem Installation,
User’s, and Maintenance Guide
v DS4400 Fibre Channel Storage Subsystem Installation and
Support Guide
v DS4500 Fibre Channel Storage Subsystem Installation and
Support Guide
v DS4700 Storage Subsystem Installation, User’s, and
Maintenance Guide
v DS4800 Storage Subsystem Installation, User’s, and
Maintenance Guide
15
Enable DS4000
Storage Manager
premium feature
keys
Copy Services premium features
DS4000 Storage Manager Copy Services Guide
FC/SATA Intermix premium feature
DS4000 Fibre Channel and Serial ATA Intermix
Premium Feature Installation Overview
Storage Partitioning (and general premium features
information)
v DS4000 Storage Manager Concepts Guide
v DS4000 Storage Manager Installation and Support
Guide for AIX, HP-UX, Solaris and Linux on POWER
v DS4000 Storage Manager Installation and Support
Guide for Windows 2000/Server 2003, NetWare,
ESX Server, and Linux
16
17
18
Configure arrays and v DS4000 Storage Manager Installation and Support Guide for
logical drives
AIX, HP-UX, Solaris and Linux on POWER
Configure host
v DS4000 Storage Manager Installation and Support Guide for
partitions
Windows 2000/Server 2003, NetWare, ESX Server, and
Linux
Verify host access to
DS4000 storage
v DS4000 Storage Manager online help
About this document
xxi
Notices used in this document
This document contains the following notices designed to highlight key information:
v Note: These notices provide important tips, guidance, or advice.
v Important: These notices provide information that might help you avoid
inconvenient or problem situations.
v Attention: These notices indicate possible damage to programs, devices, or
data. An attention notice is placed just before the instruction or situation in which
damage could occur.
v Caution: These statements indicate situations that can be potentially hazardous
to you. A caution statement is placed just before the description of a potentially
hazardous procedure step or situation.
v Danger: These statements indicate situations that can be potentially lethal or
extremely hazardous to you. A danger statement is placed just before the
description of a potentially lethal or extremely hazardous procedure step or
situation.
Figures used in this document
The figures used in this document are for illustrative purposes only. In some cases,
the actual device might look different from the figure.
Note: This applies particularly in cases where the DS4300 single-controller storage
subsystem (model 6LU/6LX) differs from the DS4300 dual-controller storage
subsystem (model 60U/60X).
Getting information, help, and service
If you need help, service, or technical assistance or just want more information
about IBM products, you will find a wide variety of sources available from IBM to
assist you. This section contains information about where to go for additional
information about IBM and IBM products, what to do if you experience a problem
with your IBM Eserver xSeries® or IntelliStation® system, and whom to call for
service, if it is necessary.
Before you call
Before you call, make sure that you have taken these steps to try to solve the
problem yourself:
v Check all cables to make sure that they are connected.
v Check the power switches to make sure that the system is turned on.
v Use the troubleshooting information in your system documentation and use the
diagnostic tools that come with your system.
v Check for technical information, hints, tips, and new device drivers at the
following Web sites:
http://www-1.ibm.com/servers/storage/support/disk/
www.pc.ibm.com/support
v Use an IBM discussion forum on the IBM Web site to ask questions.
You can solve many problems without outside assistance by following the
troubleshooting procedures that IBM provides in the online help or in the documents
xxii
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
that are provided with your system and software. The information that comes with
your system also describes the diagnostic tests that you can perform. Most xSeries
and IntelliStation systems, operating systems, and programs come with information
that contains troubleshooting procedures and explanations of error messages and
error codes. If you suspect a software problem, see the information for the
operating system or program.
Using the documentation
Information about the xSeries or IntelliStation system and preinstalled software, if
any, is available in the documents that come with your system. This includes printed
documents, online documents, readme files, and help files. See the troubleshooting
information in your system documentation for instructions for using the diagnostic
programs. The troubleshooting information or the diagnostic programs might tell you
that you need additional or updated device drivers or other software.
Web sites
IBM maintains pages on the World Wide Web where you can get the latest
technical information and download device drivers and updates.
v For DS4000 information, go to the following Web site:
www-1.ibm.com/servers/storage/support/index.html
The support page has many sources of information and ways for you to solve
problems, including:
– Diagnosing problems, using the IBM Online Assistant
– Downloading the latest device drivers and updates for your products
– Viewing frequently asked questions (FAQ)
– Viewing hints and tips to help you solve problems
– Participating in IBM discussion forums
– Setting up e-mail notification of technical updates about your products
v You can order publications through the IBM Publications Ordering System at:
www.elink.ibmlink.ibm.com/public/applications/publications/cgibin/pbi.cgi/
v For the latest information about IBM xSeries products, services, and support, go
to the following Web site:
www.ibm.com/eserver/xseries/
v For the latest information about IBM Eserver pSeries® products, services, and
support, go to the following Web site:
www.ibm.com/eserver/pseries/
v For the latest information about the IBM IntelliStation information, go to the
following Web site:
www.ibm.com/pc/intellistation/
v For the latest information about operating system and host bus adapter (HBA)
support, clustering support, SAN fabric support, and Storage Manager feature
support, see the TotalStorage DS4000 Interoperability Matrix at the following Web
site:
www-1.ibm.com/servers/storage/disk/ds4000/interop-matrix.html
About this document
xxiii
Software service and support
Through IBM Support Line, for a fee you can get telephone assistance with usage,
configuration, and software problems with xSeries servers, IntelliStation
workstations, and appliances. For information about which products are supported
by Support Line in your country or region, go to the following Web site:
www.ibm.com/services/sl/products/
For more information about the IBM Support Line and other IBM services, go to the
following Web sites:
v www.ibm.com/services/
v www.ibm.com/planetwide/
Hardware service and support
You can receive hardware service through IBM Integrated Technology Services or
through your IBM reseller, if your reseller is authorized by IBM to provide warranty
service. Go to the following Web site for support telephone numbers:
www.ibm.com/planetwide/
In the U.S. and Canada, hardware service and support is available 24 hours a day,
7 days a week. In the U.K., these services are available Monday through Friday,
from 9 a.m. to 6 p.m.
Fire suppression systems
A fire suppression system is the responsibility of the customer. The customer’s own
insurance underwriter, local fire marshal, or a local building inspector, or both,
should be consulted in selecting a fire suppression system that provides the correct
level of coverage and protection. IBM designs and manufactures equipment to
internal and external standards that require certain environments for reliable
operation. Because IBM does not test any equipment for compatibility with fire
suppression systems, IBM does not make compatibility claims of any kind nor does
IBM provide recommendations on fire suppression systems.
Table 7 on page 18 lists the environmental specifications for the DS4300 storage
subsystem.
How to send your comments
Your feedback is important to help us provide the highest quality information. If you
have any comments about this document, you can submit them in one of the
following ways:
v E-mail
Submit your comments electronically to:
starpubs@us.ibm.com
Be sure to include the name and order number of the document and, if
applicable, the specific location of the text that you are commenting on, such as
a page number or table number.
v Mail or fax
Fill out the Readers’ Comments form (RCF) at the back of this document and
return it by mail or fax (1-800-426-6209) or give it to an IBM representative. If the
RCF has been removed, you can address your comments to:
xxiv
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
International Business Machines Corporation
Information Development
Department GZW
9000 South Rita Road
Tucson, Arizona 85744-0001
U.S.A
When you send information to IBM, you grant IBM a nonexclusive right to use or
distribute the information in any way it believes appropriate without incurring any
obligation to you.
About this document
xxv
xxvi
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Chapter 1. Introduction
IBM TotalStorage DS4000 storage solutions support the large and growing data
storage requirements of business-critical applications. These scalable IBM DS4000
solutions offer you data access and protection to meet your existing enterprise
storage requirements and prepare for the future.
Fibre Channel is a device interconnect technology, similar to a high-speed network,
that you can use to connect large amounts of disk storage to a server or cluster of
servers. Fibre Channel technology supports increased performance, scalability,
availability, and distance for attaching storage subsystems to network servers. The
storage subsystem provides for the attachment of Fibre Channel disk drives to give
superior performance and redundancy.
Fibre Channel technology supports applications that require large amounts of disk
storage that is shared by two or more servers. With Fibre Channel, you can see a
higher throughput rate over longer distances than is possible with Small Computer
System Interface (SCSI) or with serial storage architecture (SSA) technology.
This document describes how to install and configure the following types of IBM
TotalStorage DS4300 storage subsystems:
v “IBM DS4300 Model 6LU/6LX” on page 2
v “DS4300 Model 60U/60X” on page 3
v “IBM DS4300 Model 60U/60X with Turbo option” on page 4
After you review the introductory information that is provided in this chapter, go to
Chapter 2, “Installing and configuring the storage subsystem,” on page 21 to begin
the installation process.
Note: The figures used in this document are for illustrative purposes only. In some
cases, the actual device might look different from the figure.
This applies particularly in cases where the DS4300 single-controller storage
subsystem (Model 6LU/6LX) differs from the DS4300 dual-controller storage
subsystem (Model 60U/60X).
Product updates
Important
In order to keep your system up to date with the latest firmware and other
product updates, use the information below to register and use the My
support Web site.
Download the latest versions of the DS4000 Storage Manager host software,
DS4000 storage server controller firmware, DS4000 drive expansion enclosure ESM
firmware, and drive firmware at the time of the initial installation and when product
updates become available.
To be notified of important product updates, you must first register at the IBM
Support and Download Web site:
www-1.ibm.com/servers/storage/support/disk/index.html
© Copyright IBM Corp. 2005, 2006
1
In the Additional Support section of the Web page, click My support. On the next
page, if you have not already done so, register to use the site by clicking Register
now.
Perform the following steps to receive product updates:
1. After you have registered, type your user ID and password to log into the site.
The My support page opens.
2. Click Add products. A pull-down menu displays.
3. In the pull-down menu, select Storage. Another pull-down menu displays.
4. In the new pull-down menu, and in the subsequent pull-down menus that
display, select the following topics:
v Computer Storage
v Disk Storage Systems
v TotalStorage DS4000 Midrange Disk Systems & FAStT Stor Srvrs
5.
6.
7.
8.
Note: During this process a check list displays. Do not check any of the items
in the check list until you complete the selections in the pull-down
menus.
When you finish selecting the menu topics, place a check in the box for the
machine type of your DS4000 series product, as well as any other attached
DS4000 series product(s) for which you would like to receive information, then
click Add products. The My Support page opens again.
On the My Support page, click the Edit profile tab, then click Subscribe to
email. A pull-down menu displays.
In the pull-down menu, select Storage. A check list displays.
Place a check in each of the following boxes:
a.
b.
c.
d.
Please send these documents by weekly email
Downloads and drivers
Flashes
Any other topics that you may be interested in
Then, click Update.
9. Click Sign out to log out of My Support.
IBM DS4300 Model 6LU/6LX
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The DS4300 single-controller storage subsystem (Model 6LU/6LX) includes one
RAID controller, one power supply, and two cooling units. It also includes fourteen
hot-swap internal disk drive slots, which support over 4 TBs of storage capacity
when using 300 GB Fibre Channel disk drives. It does not support storage capacity
expansion using external storage expansion enclosures.
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The latest version of the IBM DS4000 host software and the DS4000 controller
firmware on the DS4000 System Storage Support Web site, which support the
DS4300 single-controller Model 6LU/6LX storage subsystem are version 9 and
5.34.xx.xx, respectively.
You can use the following products to upgrade the DS4300 storage subsystem
(Model 6LU/6LX):
IBM DS4300 Model 6LU/6LX Upgrade (IBM P/N 24P8963)
Use this product to upgrade to the DS4300 Model 60U/60X, which provides
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
dual redundant RAID controllers and power supplies, and supports storage
capacity expansion using external DS4000 EXP storage expansion
enclosures.
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Note: This upgrade does not come with any entitlements to attach DS4000
EXP storage expansion enclosures. Once the DS4300 storage
subsystem is upgraded, you can purchase up to three DS4000 EXP
storage expansion enclosure attachment entitlements to provide
additional storage capacity beyond the DS4300 internal drive lots.
IBM DS4300 Model 6LU/6LX Turbo Upgrade (IBM P/N 24P8964)
Use this product to upgrade to the DS4300 Turbo option, which provides
dual redundant RAID controllers and power supplies in addition to the
following features:
v RAID controllers with 1 GB of memory, instead of the standard 256-MB
memory
v Support for IBM DS4000 Storage Manager and DS4300 controller
firmware version 6.12.xx.xx and higher.
v Ability to connect up to seven 14-drive DS4000 EXP storage expansion
enclosures
Note: If there are any DS4000 EXP 16-drive storage expansion
enclosures (such as the EXP810) in the DS4300 drive loop, the
maximum number of storage expansion enclosures that can be
attached to the DS4300 storage subsystem is reduced to 6
instead of 7. See “Connecting storage expansion enclosures to
the DS4300” on page 45 for more information.
v Entitlement for eight partitions using the Storage Partitioning premium
feature
DS4300 Model 60U/60X
The DS4300 dual-controller storage subsystem (Model 60U/60X) includes two RAID
controllers, two power supplies, and two cooling units and provides dual, redundant
controllers, redundant cooling, redundant power, and battery backup of the RAID
controller cache.
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This DS4300 storage subsystem is designed to provide maximum host- and driveside redundancy. Each RAID controller supports direct attachment of up to two
hosts containing two fibre channel host adapters.
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Note: You must make Fibre Channel connections to both DS4300 controllers to
ensure full host-side redundancy.
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The latest versions of the IBM DS4000 host software and the DS4000 controller
firmware on the DS4000 System Storage Support Web site that support the
DS4300 dual-controller Model 60U/60X storage subsystem are version 9 and
6.19.xx.xx, respectively.
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Utilizing these features with the 14 internal disk drive expansion enclosures
(EXP700/EXP710/EXP100), up to 112 disk drives can be attached to the DS4300
with individual fibre channel disk drive module (DDM) capacities ranging from 36.4
to 300 GB or individual SATA disk drive module (DDM) capacities ranging from 250
GB to 400 GB. In addition, the DS4300 can be attached to six 16 internal disk drive
expansion enclosures (EXP810), allowing a max of 110 disk drives can be attached
Chapter 1. Introduction
3
to the DS4300 with individual fibre channel disk drive module capacities ranging
from 36.4 to 300 GB and individual SATA disk drive module capacities of 500 GB.
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Note: The maximum of 112 drives in a DS4300 storage subsystem is achieved
only when all of the attached drive expansion enclosures are of 14 drive
storage expansion enclosures type (EXP100/EXP700/EXP710). When using
the 16 drive storage expansion enclosure type (EXP810) or intermixing the
14 drive and 16 drive storage expansion enclosure types behind the DS4300
controller, the maximum number of drives supported in the DS4300 controller
drive loop is 110. Please refer to Table 3 on page 6 for the maximum number
of drives supported in a DS4300 with various combinations of the 14 drive
and 16 drive storage expansion enclosures types.
Attention: The disk drive modules for the DS4300 storage subsystem and the
EXP700 and the EXP710 storage expansion enclosures (DS4300/EXP700/EXP710)
are not the same as the SATA disk drive modules (DDMs) for the EXP100 nor the
FC or SATA enhanced disk drives modules (E-DDMs) for the EXP810. The
DS4300/EXP700/EXP710, EXP100 and EXP810 use different non-interchangeable
drive options and CRUs. Please order the correct options/CRUs for the enclosures
in your configuration. Force-fitting insertion of the incorrect disk drive modules can
cause damage to the drive CRUs or the enclosure chassis slots /backplane. IBM
does not sell or provide replacement parts to change the drive CRU form factors.
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IBM DS4300 Model 60U/60X with Turbo option
The standard DS4300 dual-controller storage subsystem (Model 60U/60X) supports
a maximum of three EXP storage expansion enclosures. In order to support up to
seven EXP units, you must purchase the DS4300 Turbo option.
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The DS4300 dual-controller storage subsystem (Model 60U/60X) with Turbo option
will be referred to as the DS4300 dual-controller Turbo Model 60U/60X in IBM
publications and Readme files. The Turbo option can be purchased in the initial
order or at a later time as IBM DS4300 Model 60U/60X Turbo Upgrade option (IBM
P/Ns 24P8215 for models 60U and 24P8216 for models 60X).
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The latest versions of the IBM DS4000 host software and the DS4000 controller
firmware on the DS4000 System Storage Support Web site that support the
DS4300 dual-controller Turbo Model 60U/60X storage subsystem are version 9 and
6.19.xx.xx, respectively.
The DS4300 Turbo option consists of the following:
v Two 1-GB memory RAID controllers
v License for connecting up to seven 14 drive EXP storage expansion enclosures
or six 16 drive EXP storage expansion enclosures or a combination of up to six
14 and 16 drive EXP storage expansion enclosures
v Entitlement for eight partitions using the Storage Partitioning premium feature
DS4000 EXP storage expansion enclosures
You can add up to seven 14 drive DS4000 EXP storage expansion enclosures to
the DS4300 dual-controller storage subsystem (Model 60U/60X) or six 16 drive
DS4000 EXP storage expansion enclosures to the DS4300 dual-controller storage
subsystem (Model 60U/60X).
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Note: For the EXP100 only, if there are not any drives inserted in the DS4300
chassis, up to eight EXP100 enclosures can be attached to the DS4300
controller. This is the only case where eight EXP100 drive expansion
enclosures can be attached to the DS4300.
Similarly, up to seven EXP810s with SATA enhanced disk drive modules
(E-DDMs) only can be attached to the DS4300 with no drives inserted in the
DS4300 drive slots. This is the only case where seven EXP810 drive
expansion enclosures can be attached to the DS4300.
Attention: The DS4300/EXP700/EXP710, EXP100 and EXP810 use different
non-interchangeable drive options and CRUs. Please order the correct
options/CRUs for the enclosures in your configuration. Force-fiting insertion of the
incorrect disk drive modules may cause damage to the drive CRUs or the enclosure
chassis slots /backplane.
Notes:
1. The DS4300 single-controller storage subsystem (Model 6LU/6LX) does not
support DS4000 EXP storage expansion enclosures.
2. You do not need to purchase optional DS4000 storage expansion enclosure
entitlements to attach DS4000 EXP drive storage expansion enclosures to
DS4300 Turbo storage subsystems.
3. You can now intermix fibre channel drives (the DS4300 Turbo storage
subsystem, the EXP700 and/or the EXP710 storage expansion enclosures,
and/or the EXP810 with FC enhanced disk drive modules (E-DDMs) storage
expansion enclosures) and SATA drives (the EXP100 storage expansion
enclosures and/or the EXP810 with SATA enhanced disk drive modules
(E-DDMs) storage expansion enclosures) if the following conditions are met:
v You have purchased and installed the FC/SATA Enclosure Intermix premium
feature.
v You are installing the appropriate version of the controller firmware version
6.19.xx.xx or later on your DS4300 storage subsystems with the appropriate
DS4000 Storage Manager host software version 9.1x installed in the
host/management servers.
v EXP700 enclosures must be upgraded to EXP710 with the DS4000 EXP700
Models 1RU/1RX Switched-ESM Option Upgrade Kit for them to be
intermixed with the EXP810 enclosures. EXP700s can only be intermixed
with EXP100s and EXP710s.
v EXP810 enclosures can be intermixed with EXP710 and EXP100 enclosures
only.
For more information on the cabling firmware requirements and best practices
for intermixing EXP100s, EXP710s, EXP700s and EXP810s in the same
DS4000 storage subsystem configuration, see the IBM TotalStorage DS4000
Fibre Channel and Serial ATA Intermix Premium Feature Installation Overview
that ships with the FC/SATA Enclosure Intermix premium feature. You can also
refer to the IBM TotalStorage DS4000 Hard Drive and Storage Expansion
Enclosure Installation and Migration Guide.
4. Not all combinations of supported drive expansion enclosures are allowed in a
given DS4300 drive loop. Table 9 on page 47 shows the supported drive
expansion enclosure intermix.
For information about DS4000 storage expansion enclosures, see the following
documents:
Chapter 1. Introduction
5
v IBM TotalStorage DS4000 EXP100 Storage Expansion Enclosure Installation and
User’s Guide
v IBM TotalStorage DS4000 EXP700 and EXP710 Storage Expansion Unit
Installation, User’s, and Maintenance Guide
v IBM System Storage DS4000 EXP810 Storage Expansion Enclosure Installation,
User’s and Maintenance Guide
You can also refer to “Connecting storage expansion enclosures to the DS4300” on
page 45.
Table 3 shows the optional storage expansion enclosure attachment option/features
for the DS4300 dual-controller storage subsystem (Model 60U/60X) without the
Turbo option.
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Table 3. Additional EXP700/EXP710 storage features available for the DS4300 storage
subsystem
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Expansion Units
Number of Drives1
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Two storage
expansion units
15 to 42 drives (or up 7360
to 46 if both of the
expansion enclosures
are EXP810s)
24P8066
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First additional
storage expansion
unit
15 to 28 drives (or up 7361
to 30 if the expansion
enclosure is an
EXP810)
24P8149
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Second additional
storage expansion
unit
29 to 42 drives (or up 7362
to 46 if both of the
expansion enclosures
are EXP810s), can be
purchased only after
Feature number 7361
24P8151
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Third additional
storage expansion
unit
43 to 56 drives (or up 7363
to 62 if all of the
expansion enclosures
are EXP810s), can be
purchased only after
Feature number 7362
24P8183
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Three storage
expansion units
15 to 56 drives (or up 7368
to 62 if all of the
expansion enclosures
are EXP810s)
24P8180
6
Feature Number
Part No.
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Table 3. Additional EXP700/EXP710 storage features available for the DS4300 storage
subsystem (continued)
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Seven storage
15 to 112 drives
expansion units
Note: If one of the
attached enclosures
is an EXP810, the
maximum number of
enclosures that can
be attached behind a
DS4300 is reduced to
six, resulting in the
maximum number of
drives being less than
112. Table 9 on page
47 for the maximum
number of enclosures.
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Also include 1-GB
memory controller
upgrade and Storage
Manager 9.1x client
and controller
firmware.
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Note: 1The maximum number of supported drives varies depending on the number of EXPs
with 16 drives in the configuration versus the number of EXPs with 14 drives in the
configuration.
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To attach DS4000 EXP drive expansion enclosures to a DS4300, refer to the IBM
System Storage DS4000 Hard Drive and Storage Expansion Enclosure Installation
and Migration Guide for the latest information on the required version of the
DS4300 controller firmware and the supported combination of enclosure types
intermix behind a DS4300 subsystem. In addition, you must purchase the FC/SATA
Enclosure Intermix premium option to combine SATA disk drives with fibre channel
drives in the same DS4300 Storage Subsystem configuration.
Number of Drives1
Feature Number
Part No.
2000 (for the
1722–60U) or 2010
(for the 1722–60X)
24P8215 (for the
1722–60U)
24P8216 (for the
1722–60X)
Features at a glance
Table 4 on page 8 summarizes the features of the storage subsystem. For a list of
the operating specifications, such as weight, height, and heat output, see Table 7 on
page 18.
Chapter 1. Introduction
7
Table 4. Features at a glance
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General
v Modular components:
– High-capacity Fibre Channel disk
drives
– RAID controllers
– Power supplies
– Cooling fans
v Technology:
– Support for disk arrays
– Support for clustering
– Fibre-channel host interface
– Redundant data storage, cooling
system, power system, and RAID
controllers (Model 60U/60X only)
– Hot-swap technology for power
supplies and RAID controllers (Model
60U/60X only)
– Hot-swap technology for
fibre-channel hard drives and fans
(all models).
Attention: You will lose data if you
attempt to hot swap the controller and
power supply components in a DS4300
single-controller storage subsystem
(Model 6LU/6LX).
v User interface:
RAID controllers
– Built-in power, activity, and fault light v Technology and interfaces:
– Fibre Channel: 40-pin fibre-channel
emitting diodes (LEDs)
disk drives
– Identification labeling on customer
– Fibre Channel interface:
replaceable units (CRUs), rear LEDs,
- For Model 60U/60X, six small
switches, and connectors
form-factor pluggable (SFP)
– Easy-to-replace drives, power
modules for incoming and
supplies, RAID controllers, and fans
outgoing fibre-channel cables
Disk drive storage
(three SFPs on each RAID
2-Gbps Fibre Channel enclosure
controller).
Maximum drives per storage
- For Model 6LU/6LX, two SFP
subsystem: 14
modules for incoming
fibre-channel cables (two SFPs on
Attached storage expansion enclosures
the RAID controller).
v For Model 60U/60X, attachment of
– Two auto-negotiate 1 Gbps/2 Gbps
DS4000 EXP storage expansion
fibre-channel host-side connections
enclosures requires one or more EXP
per controller
storage expansion enclosure
Attachment option (or feature) upgrades
for the DS4300
v 2-Gbps connection only
Clustering support
Clustering is a means of sharing array groups among controllers to provide
redundancy of controllers and servers. This redundancy is important if a hardware
component fails. If a hardware component failure occurs in a cluster, another server
takes ownership of the array group.
Clustering requires software specific to your operating system. For more information
about clustering, go to the following Web sites:
www.pc.ibm.com/us/compat/nos/matrix.shtml
www.ibm.com/servers/storage/disk/ds4000/interop-matrix.html
Inventory checklist
After you unpack the storage subsystem, verify that you have the following items:
Hardware
IBM DS4300 storage subsystem comes with the following components:
v RAID controllers:
– 2 controllers on Model 60U/60X
– 1 controller on Model 6LU/6LX
v Power supplies:
– 2 power supplies on Model 60U/60X
– 1 power supply on Model 6LU/6LX
v Power cords:
– Two power cords on Model 60U/60X
8
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
– One power cord on Model 6LU/6LX
v Two fan units.
v 14 filler panels.
v Rack-mounting hardware kit (1):
– Two rails (right and left assembly)
– Ten M6 screws
– Ten M6 cage nuts
– Ten M6 clip nuts
v LC wrap plug and coupler kit for Fibre Channel link diagnostics. (For more
information, see the DS4000 Problem Determination Guide.)
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Software and documentation:
v IBM DS4000 Storage Manager software:
Version CD including client and firmware, and online help and publications in
Adobe Acrobat Portable Document Format (PDF).
For a list of available IBM DS4000 publications, see Table 2 on page xix.
The latest version of the DS4000 Storage Manager software and the DS4000
product publications are available at the DS4000 System Storage support Web
site:
http://www-1.ibm.com/servers/storage/support/disk/
v Rack Mounting Assembly kit, including:
– IBM TotalStorage DS4300 Installation, User's, and Maintenance Guide
– IBM TotalStorage DS4300 Storage Subsystem Cabling Guide
– Statement of Limited Warranty
– IBM Machine Code License Agreement
– IBM Safety Manual
– Rack mounting installation instructions
– Rack mounting template (for aligning the rails properly)
– White tape dots for marking the holes in the rack
If an item is missing or damaged, contact your IBM reseller or your IBM marketing
representative.
If you have not already done so, record your storage subsystem serial number in
the table in Appendix A, “Records,” on page 155.
Handling static-sensitive devices
Attention: Static electricity can damage electronic devices and your system. To
avoid damage, keep static-sensitive devices in their static-protective package until
you are ready to install them.
To reduce the possibility of electrostatic discharge (ESD), observe the following
precautions:
v Limit your movement. Movement can cause static electricity to build up around
you.
v Handle the device carefully. Hold it by its edges or its frame.
v Do not touch solder joints, pins, or exposed printed circuitry.
Chapter 1. Introduction
9
v Do not leave the device where others can handle and possibly damage the
device.
v While the device is still in its static-protective package, you should hold the
device and touch an unpainted metal part of the system unit for at least two
seconds. This drains static electricity from the package and from your body.
v Remove the device from its package and install it directly into your system unit
without setting it down. If it is necessary to set the device down, place it in its
static-protective package. Do not place the device on your system unit cover or
on a metal table.
v Take additional care when handling devices during cold weather because heating
reduces indoor humidity and increases static electricity.
Best practices guidelines
To ensure optimal operation of your system, always follow these best practices
guidelines:
v Back up the data on your storage drives periodically.
v Before any planned system shutdown or after any system changes (additions,
removals, or modifications), save controller subsystem profiles as explained in
the IBM DS4000 Storage Manager Installation and User’s Guide for your
operating system.
v Ensure that your system is in an optimal state before shutting down. Never turn
the power off if any fault light is lit; be sure to resolve any error conditions before
you shut down the system.
v During any maintenance or attended power-up procedure, carefully follow the
power-up sequence listed in “Turning on the storage subsystem” on page 92.
Each component of the subsystem should be checked that it is powered-on in
the proper order during this entire power-up procedure to ensure the controller
will be able to optimally access all of your storage subsystems.
v The storage subsystem supports simultaneous power-up to the system
components; however, you should always follow the power-up sequence listed in
“Turning on the storage subsystem” on page 92 during any attended power-up
procedure.
v A storage system in an optimal state should recover automatically from an
unexpected shutdown and unattended simultaneous restoration of power to
system components. After power is restored, call IBM support if any of the
following conditions occur:
– The storage subsystem logical drives and arrays are not displayed in the
Storage Manager graphical user interface (GUI).
– The storage subsystem logical drives and arrays do not come online.
– The storage subsystem logical drives and arrays seem to be degraded.
v Using the DS4000 Storage Manager client, save the DS4000 subsystem
configuration profile to a disk that is not affected every time you make changes to
the DS4000 subsystem configuration (such as logical drive creation or
modification, or storage partitioning changes).
v DS4300 Model 60U/60X only: To maintain power redundancy, plug the DS4300
dual-controller storage subsystem’s right and left power supplies into two
independent external power circuits through ac distribution units inside a rack
cabinet or directly into external receptacles. Similarly, the right and left power
supplies of the DS4000 storage expansion enclosures attached to the DS4300
storage subsystem should be plugged into the same two independent external
power circuits as the DS4300 storage subsystem. This ensures that the DS4300
10
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
storage subsystem and all its attached storage expansion enclosures will have
power if only one power circuit is available. In addition, having all the right or all
the left power supplies plugged into the same power circuit will enable the
components in the storage subsystem to power on simultaneously during an
unattended restoration of power. See Figure 72 on page 86 for an example of
redundant power connections.
Storage subsystem components
The following sections show the components of the DS4300 storage subsystem.
Note: The graphics used in this document are for illustrative purposes only. The
appearance of the actual device may differ from the graphic.
All DS4300 storage subsystem models support hot-swap fibre channel hard drive
CRUs and cooling fan CRUs, so you can remove and replace these components
without turning off the storage subsystem. In addition, the DS4300 storage
subsystem models 60X and 60U support hot-swap power supplies and RAID
controller CRUs.
Attention: The DS4300 single-controller storage subsystem (model 6LU and 6LX)
has one power supply and one controller; therefore, you cannot hot swap these
components.
Front view
Figure 1 shows the components and controls on the front of the DS4300 storage
subsystem.
General-systemerror LED
Power-on LED
Tray handle
Locator LED
Latch
Hot-swap
drive CRU
Drive activity LED
Drive fault LED
Figure 1. DS4300 storage subsystem front controls and components
Note: The graphics used in this document are for illustrative purposes only. The
appearance of the actual device may differ from the graphic.
Power-on LED
When on, this green light indicates that the unit has good dc power.
The DS4300 single-controller storage subsystem (model 6LU and 6LX) has
a single power supply therefore; when the power supply fails, the
General-system-error LED and the Power-on LED are not lit.
Chapter 1. Introduction
11
General-system-error LED
When on, this amber LED indicates that the storage subsystem has a fault,
such as in a power supply, fan unit, or hard disk drive.
The DS4300 single-controller storage subsystem (model 6LU and 6LX) has
a single power supply therefore; when the power supply fails, the
General-system-error LED and the Power-on LED are not lit.
Note: If the General-system-error LED is on continuously (not flashing),
there is a problem with the storage subsystem. Use the storage
management software to diagnose and repair the problem. For more
information, see “Checking the LEDs” on page 97.
Locator LED
When on, this blue light indicates the storage management software is
locating the server.
Hot-swap drive CRU
You can install up to 14 hot-swap drive customer replaceable units (CRUs)
in the storage subsystem. Each drive CRU consists of a hard disk drive and
tray. The drive CRU is also referred to as disk drive modules (DDM).
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Note: The DS4300 drive CRU does not have the same form factor as the
EXP100 or the EXP810 storage expansion enclosure drive CRUs.
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Filler panel
The storage subsystem comes without drives installed and contains filler
panels in the unused drive bays. Before installing new drives, you must
remove the filler panels and save them. Each of the 14 bays must always
contain either a filler panel or a drive FRU. Each filler panel contains a filler
piece for use with a slim drive.
Drive activity LED
Each drive CRU has a green Drive activity LED. When flashing, this green
LED indicates drive activity. When on continuously, this green LED indicates
that the drive is properly installed.
Drive fault LED
Each drive CRU has an amber Drive fault LED. When on, this amber LED
indicates a drive failure. When flashing, this amber LED indicates that a
drive identify is in progress.
Latch This multipurpose blue latch releases or locks the drive CRU in place.
Tray handle
You can use this multipurpose handle to insert and remove a drive CRU in
the bay.
For information on how to install and replace drive CRUs, see “Working with
hot-swap drives” on page 120. For more information about the LEDs, see “Checking
the LEDs” on page 97.
Back view
Figure 2 on page 13 shows the components at the back of the DS4300
dual-controller storage subsystem (model 60U and 60X).
12
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Hot-swap fan bays
Raid controllers
Hot-swap
power supplies
Figure 2. DS4300 dual-controller storage subsystem (model 60U and 60X) back view
Figure 3 shows the components at the back of the DS4300 single-controller storage
subsystem (model 6LU and 6LX).
RAID Controller
Hot-swap fan
Hot-swap fan
Power Supply
Figure 3. DS4300 single-controller storage subsystem (model 6LU and 6LX) back view
Note: The graphics used in this document are for illustrative purposes only. The
appearance of the actual device may differ from the graphic.
RAID controller
Each RAID controller contains three ports for SFP modules that connect to
the fibre channel cables. Two of the ports, which are labeled Host 1 and
Host 2, are used to connect to host servers. The third port, which is labeled
Expansion and is available on the DS4300 model 60U and 60X controllers
only, is used to connect additional expansion units to the storage
subsystem.
Each RAID controller also contains a battery to maintain cache data in the
event of a power failure. For more information, see “Cache memory and
RAID controller battery” on page 101.
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Note: The DS4300 single-controller storage subsystem (model 6LU and
6LX) contains only one RAID controller. You must keep the second
controller bay cover on to maintain proper cooling.
Chapter 1. Introduction
13
Hot-swap fans
The storage subsystem has two interchangeable hot-swap and redundant
fan FRUs. Each fan FRU contains two fans. If one fan FRU fails, the
second fan FRU continues to operate. Both fan FRUs must be installed to
maintain proper cooling within your storage subsystem, even if one fan FRU
is not operational.
Hot-swap power supplies
The DS4300 dual-controller storage subsystem (model 60U and 60X)
comes with two hot-swap power supplies. Both power supplies must be
installed to maintain proper cooling.
Note: The DS4300 single-controller storage subsystem (model 6LU and
6LX) comes with one power supply. You must keep the second
power supply bay cover on to maintain proper cooling.
Interface ports and switches
Figure 4 shows the ports and switches on the back of the storage subsystem.
Ethernet
Host port 2
Host port 1
AC power
connector
Ethernet
Expansion port
Host port 2
Serial port
AC power
switch
Host port 1
Tray ID
switch
Expansion port
Serial port
AC power
connector
AC power
switch
Figure 4. DS4300 dual-controller storage subsystem (model 60U and 60X) interface ports
and switches
For a similar view of the DS4300 model 6LU and 6LX, see Figure 3 on page 13.
RAID controller
Each RAID controller contains several connectors and LEDs. Each
controller has two host ports and one expansion port for connecting the
storage subsystem to hosts or expansion units. You first insert SFPs into
the ports and then connect the fibre channel cables.
Note: The DS4300 single-controller storage subsystem (model 6LU and
6LX) contains only one RAID controller and does not contain any
expansion ports.
Host ports
The host ports are used to connect a fibre channel cable from the host
systems. You first insert an SFP into the port and then connect a fibre
14
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
channel cable. The two host ports in each controller are independent. They
are not connected in the controller module as they would be in a hub
configuration.
Ethernet port
The Ethernet port is for an RJ-45 10BASE-T or 100BASE-T Ethernet
connection. Use the Ethernet connection to directly manage storage
subsystems.
Expansion port
The expansion port is used to connect additional expansion units to the
RAID controllers. You first insert an SFP into the port and then connect a
fibre channel cable.
Note: There are no expansion ports on the DS4300 single-controller
storage subsystem (model 6LU and 6LX).
Serial port
The serial port is used by service personnel to perform diagnostic
operations on the RAID controller or controllers.
Tray ID switch
The Tray ID switch settings range from 0 through 7, and unique IDs ranging
from 00 through 77 can be set.
This switch is also referred to as enclosure IDs in other IBM DS4000
publications.
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Note: For controller firmware version 05.33.xx.xx, both host and expansion ports
operate at 2 Gbps only. For controller firmware versions 05.4x.xx.xx and
higher, the host ports can operate at either 1 or 2 Gbps (the expansion port
speed is still locked at 2 Gbps only).
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Software and hardware compatibility and upgrades
The latest DS4000 controller firmware and NVSRAM, the storage expansion
enclosure drive enclosure ESM firmware, and the fibre channel drive CRUs
firmware must be installed to ensure optimal functionality, manageability, and
reliability.
Software and firmware support code upgrades
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To enable support for the DS4300, you must ensure that your system’s software
and firmware are at the levels shown in Table 5.
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Table 5. Software and firmware levels for the DS4300 storage subsystem
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Software/firmware
Level
|
DS4000 Storage Manager software
9.19
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DS4300 dual-controller firmware and
NVSRAM (Standard and Turbo
models)
06.19.xx.xx or higher
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DS4300 single-controller firmware and 5.34.xx.xx only
NVSRAM
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ESM firmware for attached storage expansion enclosures
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EXP810
9878 or higher
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EXP710
9640 or higher
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EXP100
9565 or higher
Chapter 1. Introduction
15
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Table 5. Software and firmware levels for the DS4300 storage subsystem (continued)
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Software/firmware
Level
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EXP700
9330 or higher
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Drive firmware
You can find the latest drive firmware at the IBM
DS4000 TotalStorage Support Web site:
http://www-1.ibm.com/servers/storage/support/disk/
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You can find the latest DS4000 Storage Manager software, DS4300 controller
firmware, and NVSRAM firmware at the IBM DS4000 System Storage Support Web
site: http://www-1.ibm.com/servers/storage/support/disk/.
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See the IBM System Storage DS4000 Storage Manager 9.19 Installation and
Support Guide for your operating system for instructions that describe how to install
the DS4000 Storage Manager 9.19 host software. The DS4300 dual controller
models are shipped with controller firmware version 6.19.xx.xx, which supports
EXP810, EXP710, and EXP100 storage expansion enclosures only. If you need
further assistance, please contact your IBM reseller or IBM representative.
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DS4300 hardware and software compatibility
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Table 6 lists the DS4300 hardware and software compatibility. In the latest release
of the DS4300 controller firmware version 6.19.xx.xx, you can connect EXP810 to
the DS4300 storage subsystem.
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Note: For the latest information about supported servers and operating systems,
refer to the interoperability matrix at the following Web site:
www.ibm.com/servers/storage/disk/ds4000/interop-matrix.html
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Table 6. DS4300 hardware and software compatibility
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Drive expansion
enclosure
Storage
management
software
Controller
firmware
Notes
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EXP810, EXP710,
EXP100
IBM DS4000 Storage 06.19.xx.xx or
Manager Version
higher
9.19 or later
The EXP700 is not
supported by 06.19.xx.xx.
The EXP700 can be
upgraded by using the
DS4000 EXP700 Models
1RU/1RX Switched-ESM
Option Upgrade Kit to make
it compatible with
06.19.xx.xx and to intermix
with the EXP810.
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EXP710, EXP700,
EXP100
IBM DS4000 Storage 06.12.xx.xx
Manager Version
9.19 or later
06.12.xx.xx is the latest
version of DS4300 controller
firmware that supports the
EXP700.
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EXP100
IBM DS4000 Storage 05.41.xx.xx or
Manager Version
higher
9.19 or later
(06.19.xx.xx is
recommended.)
05.41.xx.xx supports the
EXP100 enclosures only. In
addition, the DS4300
storage subsystem must not
have any FC drives installed
in its internal drive slots.
16
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Table 6. DS4300 hardware and software compatibility (continued)
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Drive expansion
enclosure
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EXP700
Storage
management
software
Controller
firmware
Notes
IBM DS4000 Storage 05.33.xx.xx or 05.33.xx.xx/05.34.xx.xx or
Manager Version
05.34.xx.xx (for 04.xx.xx are the starting
9.16 or later
Turbo version
controller firmware release
of the model
threads that support the
60X, 60U only, DS4300 dual controller
5.40.xx.xx)
model and the DS4300 dual
controller Turbo model,
respectively. The latest
controller firmware version
6.12.xx.xx or 6.19.xx.xx is
strongly recommended.
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Important: The DS4300
single-controller support
controller firmware version
5.34.xx.xx only.
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Determining firmware levels
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Method One: Go to the Subsystem Management window and select View →
Storage Subsystem Profile. When the Storage Subsystem Profile window opens,
select the All tab and scroll through the Profile For Storage Subsystem list to locate
the following information.
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Note: The Profile For Storage Subsystem list contains all the profile information for
the entire subsystem. Therefore, it may be necessary to scroll through a
large amount of information to locate the firmware version numbers.
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DS4000 Storage Subsystem
v NVSRAM version
v Appware version
v Bootware version
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Drives
v Drive Firmware version
v ATA translator card firmware for EXP810 SATA enhanced disk drive module
(E-DDM)
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ESM
v ESM card firmware version
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Method Two: Complete the appropriate procedure to obtain the specified firmware
version.
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To obtain the controller firmware version: Right-click the Controller icon in the
Physical View pane of the Subsystem Management window and select Properties.
The Controller Enclosure properties window opens and displays the properties for
that controller. You must perform this step for each individual controller.
There are two different methods to determine the DS4000 storage subsystem and
firmware versions. Each method uses the DS4000 Storage Manager client that
manages the DS4300 storage subsystem.
Chapter 1. Introduction
17
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To obtain the drive firmware (and ATA translator card firmware, if appropriate)
version: Right-click the Drive icon in the Physical View pane of the Subsystem
Management window and select Properties. The Drive Properties window opens
and displays the properties for that drive. You must perform this step for each
individual drive.
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To obtain the drive enclosure component ESM firmware version: In the
Physical View pane of the Subsystem Management window, click the Drive
Enclosure Component icon, which is the icon furthest to the right. The Drive
Enclosure Component Information window opens. Click the ESM icon in the left
pane. The ESM information displays in the right pane of the Drive Enclosure
Component Information window. Locate the firmware version of each ESM in the
drive enclosure.
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Specifications
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Table 7 summarizes the operating specifications of the controller unit.
Table 7. DS4300 storage subsystem operating specifications
Environment
Size (with front panel and without
mounting rails)
v Depth: 59.7 cm (23.6 in.)
v Height: 13.2 cm (5.2 in.)
v Width: 48 cm (18.9 in.)
Heat output
v 390 watts (1330 BTU/hr)
Weight
v Standard storage subsystem as
shipped:
– Model 60U/60X: 39.10 kg (86.2 lb)
– Model 6LU/6LX: 34.34 kg (75.7 lb)
v Unit weight:
– Model 60U/60X: 31.48 kg (69.4 lb)
– Model 6LU/6LX: 26.71 kg (58.9 lb)
v Air temperature:
– storage subsystem on:
10° to 35°C
(50° to 95°F)
Altitude: 0 to 914 m (3000 ft.)
– storage subsystem on:
10° to 32°C
(50° to 90°F)
Altitude: 914 m (3000 ft.) to 2133 m
(7000 ft.)
v Humidity:
– 8% to 80%
– Noncondensing
Electrical input
v Sine-wave input (50 to 60 Hz) is
required
v Input voltage:
– Low range:
- Minimum: 90 V ac
- Maximum: 136 V ac
– High range:
- Minimum: 198 V ac
- Maximum: 264 V ac
– Input kilovolt-amperes (kVA)
approximately:
- Minimum configuration: 0.06 kVA
- Maximum configuration: 0.37 kVA
Acoustical noise emissions values For
open bay (0 drives installed) and typical
system configurations (14 hard disk drives
installed).
v Sound power (idling):
– 6.3 bels (open bay)
– 6.5 bels (typical)
v Sound power (operating):
– 6.3 bels (open bay)
– 6.8 bels (typical)
v Sound pressure (idling):
– 47 dBA (open bay)
– 49 dBA (typical)
v Sound pressure (operating):
– 47 dBA (open bay)
– 53 dBA (typical)
These levels are measured in controlled
acoustical environments according ISO
7779 and are reported in accordance with
ISO 9296. The declared sound power
levels indicate an upper limit, below which
a large portion of machines operate.
Sound pressure levels in your location
might exceed the average 1-meter values
stated because of room reflections and
other nearby noise.
Shock and vibration requirements
Operational Shock: The DS4000 product will be able to withstand the following
shock. Subjecting the equipment to a single shock pulse with the following
characteristics will simulate this level of shock:
v Velocity change = 20 inches per second
v Wave form = Triangular, 10g @ 3.75 ms
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18
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Operational Vibration (Random): While in its normal operating position, the
DS4000 product will continue operating when subjected to a random vibration test
using the criteria shown in Table 8. This test uses the indicated spectral power
density for 30 minutes in each of the three axes.
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Table 8. Random Vibration Power Spectral Density
|
Hz
2
5
17
-7
45
-5
48
-5
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The
g /Hz
DS4000
subsystem
|
Heat output, airflow, and cooling
2.0x10
2.2x10
2.2x10
62
-5
2.2x10
65
-5
2.2x10
150
-5
2.2x10
200
-5
2.2x10
500
-5
2.2x10
2.2x10-5
The maximum heat output of the DS4300 is 390 watts (1330 BTU/hr). Each
DS4300 (Model 60U/60X) and DS4000 EXP storage expansion enclosures
rack-mounted unit requires an airflow of 2.5 m3 per minute (87 ft3 per minute). The
input air temperature to all racks is recommended to be in the range 10°C through
35°C (50°F through 95°F), with a recommended operating temperature of 22°C
(72°F).
When racks that contain many DS4300 units are to be installed together, the
following requirements must be met to ensure that the DS4300 units are adequately
cooled:
v Air enters at the front of the rack and leaves at the back. To prevent the air that
is leaving the rack from entering the intake of another piece of equipment, racks
must be positioned in alternate rows, back-to-back and front-to-front. This
arrangement is known as “Cold Aisle / Hot Aisle” and is shown in Figure 5 on
page 20.
v Where racks are in rows, each rack must touch the rack that is next to it to
reduce the amount of hot air that can flow around from the back of the rack into
the intakes of the DS4300 units that are in that rack. It is recommended that
Suite Attach Kits be used to completely seal any gaps that remain between the
racks. For details of Suite Attach Kits, contact your marketing representative.
v Where racks are in rows front-to-front or back-to-back, a gap of at least 1220 mm
(48 in.) must separate the rows across the cold aisle.
v To ensure correct airflow in each rack, the rack filler plates must be installed in
unused positions. Also, all the gaps in the front of the racks must be sealed,
including the gaps between the DS4300 units.
Chapter 1. Introduction
19
back
T42 racks
front
Air
conditioner
1220 mm cold
aisle width
Perforated tiles
or gratings
Cold aisle
front
2440 mm between
center lines of hot
and cold aisle
T42 racks
back
Hot aisle
back
T42 racks
front
Airflow
Figure 5. Example of Cold Aisle/Hot Aisle Rack Configuration
20
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Chapter 2. Installing and configuring the storage subsystem
This chapter contains information about how to prepare, install, and configure the
storage subsystem.
Getting started
Use the following list to prepare a storage subsystem for installation:
1. Prepare the site to meet all area, environmental, power, and site requirements.
For more information, see “Specifications” on page 18.
2. Move the storage subsystem and its rack cabinet to the site.
3. Remove the storage subsystem from its shipping container and check the
contents. (For a list of items, see “Inventory checklist” on page 8.) If any items
are missing, contact your IBM reseller before you proceed.
4. Assemble the tools and equipment that you will need for installation. These
might include the following:
v Power cords (come with the storage subsystem)
v Screwdrivers (medium flat-blade and #2 Phillips)
v
v
v
v
v
Antistatic protection (such as a grounding wrist strap)
SFPs
Fibre channel and Ethernet interface cables and cable straps
Rack-mounting hardware (comes with the storage subsystem)
Storage-management software to configure the storage subsystems (comes
with the storage subsystem on the IBM TotalStorage DS4000 Storage
Manager installation CD or from the IBM DS4000 System Storage Support
Web site)
Rack mounting instructions and a template for aligning the holes in the rails and the
rack come with the storage subsystem. If you have misplaced these items, see
“Rack mounting template and instructions.”
After you install the storage subsystem in the rack and configure the storage
subsystem, go to Chapter 3, “Cabling the storage subsystem,” on page 29.
Rack mounting template and instructions
A rack mounting template and instructions come with the storage subsystem. If you
have misplaced these items, use the following template and instructions.
© Copyright IBM Corp. 2005, 2006
21
FRONT
Rack Mounting
Template
Bezel
(Front Left)
Rail assembly
(Front Left)
Bezel
(Front Right)
Rail assembly
(Front Right)
Figure 6. Front rack mounting template
22
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
REAR
Rack Mounting
Template
Rail assembly
(Rear Left)
Rail assembly
(Rear Right)
®
P/N 06P4631
Printed in the U.S.A.
Figure 7. Rear rack mounting template
Chapter 2. Installing and configuring the storage subsystem
23
Installing the storage subsystem in a rack
Review the documentation that comes with the rack cabinet for safety and cabling
information. When you install the storage subsystem in a rack, consider the
following factors:
v Ensure that the room air temperature is below 35°C (95°F).
v Do not block any air vents. Usually, leaving 15 cm (6 in.) of air space provides
proper airflow.
v Plan the device installation starting from the bottom of the rack.
v Do not extend more than one device out of the rack at the same time.
v Remove the rack doors and side panels to provide easier access during
installation.
v Connect all power cords to properly wired and grounded electrical outlets.
v Take precautions to prevent overloading the power outlets when you install
multiple devices in a rack.
Statement 4:
≥ 18 kg (39.7 lb)
≥ 32 kg (70.5 lb)
≥ 55 kg (121.2 lb)
CAUTION:
Use safe practices when lifting.
You will need a flat-blade and a Phillips screwdriver during the installation. The
following items come with your option. If any items are missing or damaged, contact
your place of purchase.
v Cage nuts (10)
v Clip nuts (10)
v M6 screws (10)
v Side rails (2)
Perform the following steps to install the storage subsystem in a rack.
Before you begin: A DS4300 storage subsystem with 14 drives installed can weigh
up to 41 kg (92 lb). At least three people are required to properly lift the storage
subsystem from the shipping box and place it in the rack. For safety reasons, it is
recommended you remove the CRUs from the DS4300 chassis to lighten the load
for ease in moving the DS4300 unit. If you do not have enough people, follow the
recommendation to perform the first four steps for the installation procedure, which
involve removing some components from the storage subsystem in order to reduce
the weight of the storage subsystem for easier installation.
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24
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
1. Use the attached template and stickers to mark the appropriate holes on the
rack; then install clip nuts or cage nuts as required for the rack cabinet.
Note: Use the cage-nut-insertion tool or a flat-blade screwdriver to install cage
nuts.
5
5
Cage
Clip
n
Clip
nuts
n
Cage
nuts
uts
uts
Cage
n
Cage
nuts
uts
Figure 8. Rack nut installation
2. On the rail marked R, remove the 6/32 in. screw 3 and loosen the four screws
2; then hold the front of the rail against the outside of the right
rack-mounting-flange and loosely install two M6 screws 1.
Extend the rear of the rail outside of the rear rack-mounting-flange; then install
and tighten two M6 screws 4. Tighten the front screws 1 and repeat this
step for the other rail.
6
6
Figure 9. Rail extension
3. Tighten the rail adjustment screws 1 on both rails.
Chapter 2. Installing and configuring the storage subsystem
25
7
7
Figure 10. Rail adjustment screws
4. To remove a RAID controller, push down on the latch centered on the controller;
then, grasp the pull-rings on the levers and pull them to remove the RAID
controller and set it aside for later installation.
If you have a second RAID controller, repeat this step for the second controller.
Attention: Observe ESD procedures when removing CRUs from the DS4300
storage subsystem. See the storage subsystem documentation for handling
guidelines before removing any ESD-sensitive devices.
1
1
Figure 11. RAID controller removal
5. To remove a hot-swap fan, slide the latch on the fan to unlock it; then pull the
handle and remove the fan from the storage subsystem.
Repeat this step for the other fan and set both fans aside for later installation.
26
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
2
2
Figure 12. Hot-swap fan removal
6. To remove a power supply, grasp the pull-ring on the power supply lever and
squeeze to release it; then pull the lever fully open and remove the power
supply from the storage subsystem.
Repeat this step for the other power supply; then set both power supplies aside
for later installation.
.
3
3
Figure 13. Power supply removal
7. To remove a hard disk drive 2, press the blue latch 3 and pull the handle
1 upwards; then carefully pull the drive from the storage subsystem.
Attention: Place the removed drives in a horizontal position, with the printed
circuit boards facing down. Do not stack the drives on top of each other. Protect
from vibrations or sudden shocks.
Note: Before you remove any hard disk drives, make sure that you mark their
location so that you can reinstall them in the same location.
Repeat this step for all hard disk drives.
Chapter 2. Installing and configuring the storage subsystem
27
4
Figure 14. Hard disk drive removal
8. Remove the white screws and nuts 1 from the storage subsystem bezel; then
slide the storage subsystem into the rack. Align the bezel locator pins and
attach the bezel with two M6 screws 2; then install and tighten the 6-32 in.
screws 3.
8
8
Figure 15. Server installation
9. Reverse step 1 through step 4 to reinstall the components that you removed. To
cable the DS4300 to the host and the storage expansion enclosure, see
Chapter 3, “Cabling the storage subsystem,” on page 29.
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Chapter 3. Cabling the storage subsystem
This chapter provides fibre channel and power cabling information for the storage
subsystem in the following sections:
v “Setting server/tray ID settings”
v “Working with SFPs and fiber-optic cables” on page 30
v “Connecting storage expansion enclosures to the DS4300” on page 45
“Configuring the drive loops with storage expansion enclosures” on page 61
“Host fibre channel connections” on page 74
“Connecting hosts to the RAID controllers” on page 80
“Configuring the storage subsystem” on page 82
“Connecting secondary interface cables” on page 84
“Power cabling” on page 85
“Installing the storage-management software” on page 86
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v
v
v
v
v
v
v
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After you attach the storage subsystem power cables, use the instructions that are
provided in “Turning the storage subsystem on and off” on page 92 for the initial
startup of the storage subsystem.
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Setting server/tray ID settings
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The DS4300 storage subsystem comes with a server ID switch that is used to
identify the DS4300 on a fibre channel loop. The server ID switch is located on the
back of the unit, as shown in Figure 16 on page 30.
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Note: The Server ID switch is sometimes referred to as an Enclosure ID switch.
© Copyright IBM Corp. 2005, 2006
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Server ID Switch
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Figure 16. Setting the Server ID
Server ID switch settings set the server ID to a value from 00 - 77. Server ID switch
X1 is for setting the ones position, and Server ID switch X10 is for setting the tens
position. The settings of the two server ID switches, when used together, provide a
two-digit ID of the server unit. The storage-management software uses the server
ID to provide a correlation between the storage-management graphics and the
physical storage unit. The ID indicates which physical unit corresponds to the
storage-management software status.
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Use Server ID switches X10 and X1 to set the server-unit ID to any value from 00
through 77.
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Note: Each server unit should have a unique ID if it is going to be connected to
other DS4000 EXP storage expansion enclosures through the storage
expansion enclosure loop ports. The Server ID setting is only valid for the
drive loop. The amber Conflict LED (located on the right-side of the switch)
will be lit if there is another unit in the drive loop that has the same ID setting
as the server ID. See your storage subsystem documentation for more
information.
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Working with SFPs and fiber-optic cables
Each RAID controller CRU contains ports for SFP modules that connect to the
fiber-optic cables. Two of the SFP ports are for host server attachment. On the
DS4300 Model 60U/60X, each RAID controller also has an additional port that
connects DS4000 EXP storage expansion enclosures to the storage subsystem.
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First, insert the SFP into the port, and then insert a fiber-optic cable into the SFP.
The other end of the fiber-optic cable connects to an external device. Note that
SFPs are laser products.
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Statement 3
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CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or
transmitters) are installed, note the following:
v Do not remove the covers. Removing the covers of the laser product could result in
exposure to hazardous laser radiation. There are no serviceable parts inside the
device.
v Use of controls or adjustments or performance of procedures other than those
specified herein might result in hazardous radiation exposure.
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||
Danger
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Some laser products contain an embedded Class 3A or Class 3B laser diode. Note the
following.
Laser radiation when open. Do not stare into the beam, do not view directly with optical
instruments, and avoid direct exposure to the beam.
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Types of interface ports
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The following sections briefly discuss the types of interface ports.
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Host ports
DS4300 controller host ports are used for data transfer between hosts (servers) and
the RAID controllers in the DS4300 Storage Subsystem. Each controller has two
independent host ports in a switched (not a hub) implementation. To ensure
redundancy, you must connect each host to both controllers through the appropriate
port. The DS4300 with dual controllers (model 60X/U) support a maximum of two
hosts redundantly directly connected to it. To support more host connections, one
can connected the DS4300 host ports and the servers to the FC switches in a SAN.
The DS4300 single controller supports a maximum of two hosts non-redundantly
connected to it.
Chapter 3. Cabling the storage subsystem
31
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Controller A host port
Controller B host port
ds43backhost
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Figure 17. Location of host ports
Expansion ports (also referred to as drive ports)
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The DS4300 controller drive/expansion ports are used for extending the storage
capacity from the internal DS4300 chassis. They are use for data transfer between
the drives in the DS4000 storage expansion enclosures and the RAID controllers in
the DS4300 Storage Subsystem. There is only drive/expansion port per controller.
The drive/expansion port from each controller must be connected to the same set of
DS4000 storage expansion enclosures to support redundant drive loop
configurations (two data paths per storage expansion enclosure). DS4300 Storage
Subsystems support only one redundant drive-loop pair. The DS4300 single
controller model does not have any expansion ports.
Controller A drive port
Controller B drive port
ds43backdrive
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Figure 18. Location of drive ports
Ethernet ports
There are two Ethernet interface ports, one for each controller (Controller A and
Controller B). Use the Ethernet ports to directly manage (also referred to as
out-of-band management) DS4300 storage subsystems. With controller firmware
version 6.xx.xx.xx, the default IP addresses for controllers A and B Ethernet ports
are 192.168.128.101 and 192.168.128.102, respectively. The default subnetmasks
for these ports are 255.255.255.0. The DS4300 single controller model has only
one Ethernet port (because it has only one controller).
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Controller A Ethernet port
Controller B Ethernet port
ds43backether
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Figure 19. Location of Ethernet ports
Handling fiber-optic cables
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Before using fiber-optic cables, read the following precautions.
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Attention:
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To avoid damage to the fiber-optic cables, follow these guidelines:
v Do not route the cable along a folding cable-management arm.
v When attaching to a device on slide rails, leave enough slack in the cable so that
it does not bend to a radius of less than 38 mm (1.5 in.) when extended or
become pinched when retracted.
v Route the cable away from places where it can be snagged by other devices in
the rack.
v Do not overtighten the cable straps or bend the cables to a radius of less than 38
mm (1.5 in.).
v Do not put excess weight on the cable at the connection point. Be sure that the
cable is well supported.
Installing SFP modules
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The DS4300 storage subsystem host ports require SFP modules. SFP modules are
used to convert electrical signals to optical signals that are required for Fibre
Channel transmission to and from RAID controllers. The DS4300 storage
subsystem supports two types of SFP modules; one with a plastic pull-tab latch and
one with a metal or plastic wire latch. After you install the SFP modules, you will
use fiber-optic cables to connect the DS4300 storage subsystem to other fibre
channel devices.
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Before you install SFP modules and fiber-optic cables, read the following
information:
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v The SFP module housing has an integral guide key designed to prevent you from
inserting the SFP module improperly.
v Use minimal pressure when you insert the SFP module into a port. Forcing the
SFP module into a port could cause damage to the SFP module or the port.
v You can insert or remove the SFP module while the port is powered on.
v The operational loop performance is not affected when you install or remove an
SFP module.
v You must insert the SFP module into a port before you connect the fiber-optic
cable.
Chapter 3. Cabling the storage subsystem
33
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v You must remove the fiber-optic cable from the SFP module before you remove
the SFP module from the port. See “Removing SFP modules” on page 35 for
more information.
v Do not mix long-wave SFPs and short-wave SFPs on a single storage
subsystem. Use only short-wave SFPs; the DS4300 subsystems do not support
long-wave SFPs.You can use the DS4000 Storage Manager client to view the
Storage Subsystem Profile in order to verify that you are not mixing long-wave
and short-wave SFPs.
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To install an SFP module, complete the following steps.
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Statement 3:
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CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber-optic devices, or
transmitters) are installed, note the following:
v Do not remove the covers. Removing the covers of the laser product could
result in exposure to hazardous laser radiation. There are no serviceable
parts inside the device.
v Use of controls or adjustments or performance of procedures other than
those specified herein might result in hazardous radiation exposure.
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DANGER
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Some laser products contain an embedded Class 3A or Class 3B laser
diode. Note the following.
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Laser radiation when open. Do not stare into the beam, do not view directly
with optical instruments, and avoid direct exposure to the beam.
Attention: When you handle static-sensitive devices, take precautions to avoid
damage from static electricity. For details about handling static-sensitive devices,
see “Handling static-sensitive devices” on page 9.
1. Remove the SFP module from its static-protective package.
2. Remove the protective cap from the SFP module, as shown in Figure 20 on
page 35. Save the protective cap for future use.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Plastic tab
Protective cap
SFP module
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Figure 20. SFP Module
3. Remove the protective cap from the host port. Save the protective cap for future
use.
4. Insert the SFP module into the host port until it clicks into place. See Figure 21.
SFP module
Raid controller
Fiber-optic
cable
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Figure 21. Installing an SFP module into the host port
5. Connect a fibre channel cable.
Removing SFP modules
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To remove the SFP module from the host port, perform the following steps.
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Attention: To avoid damage to the cable or the SFP module, make sure you
unplug the LC-LC fibre channel cable before you remove the SFP module.
1. Remove the LC-LC Fibre Channel cable from the SFP module. For more
information, see “Handling fiber-optic cables” on page 33.
2. Unlock the SFP module latch:
v For SFP modules containing plastic tabs, unlock the SFP module latch by
pulling the plastic tab outward 10°, as shown in Figure 22 on page 36.
Chapter 3. Cabling the storage subsystem
35
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Plastic tab
Protective cap
10 o
SFP module
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Figure 22. Unlocking the SFP module latch - plastic variety
v For SFP modules containing wire tabs, unlock the SFP module latch by
pulling the wire latch outward 90°, as shown in Figure 23.
Wire
tab
Protective
cap
o
90
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Figure 23. Unlocking the SFP module latch - wire variety
3. With the SFP latch in the unlocked position, extract the SFP module.
v For SFP modules containing plastic tabs, slide the SFP module out of the
port.
v For SFP modules containing wire tabs, grasp the wire latch and pull the SFP
module out of the minihub port.
4. Replace the protective cap on the SFP module.
5. Place the SFP module into a static-protective package.
6. Replace the protective cap on the port.
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SFP
module
Using LC-LC fibre-channel cables
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The LC-LC fibre-channel cable is a fiber-optic cable that you use to connect
DS4700 fibre channel ports into one of the following devices:
v An SFP module installed in a fibre channel switch port
v An SFP module of the host bus adapter port
v An SFP module installed in an IBM® DS4000 storage expansion enclosure
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See Figure 24 on page 37 for an illustration of the LC-LC fibre-channel cable.
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For more information about cabling these devices, see the documentation that
comes with the LC-LC fibre-channel cable.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Figure 24. LC-LC fibre-channel cable
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Connecting an LC-LC cable to an SFP module
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Statement 3:
Complete the following steps to connect an LC-LC fibre-channel cable to an SFP
module:
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CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or
transmitters) are installed, note the following:
v Do not remove the covers. Removing the covers of the laser product could
result in exposure to hazardous laser radiation. There are no serviceable
parts inside the device.
v Use of controls or adjustments or performance of procedures other than
those specified herein might result in hazardous radiation exposure.
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DANGER
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|
Some laser products contain an embedded Class 3A or Class 3B laser
diode. Note the following.
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Laser radiation when open. Do not stare into the beam, do not view directly
with optical instruments, and avoid direct exposure to the beam.
1. Read the information in “Handling fiber-optic cables” on page 33.
2. If necessary, remove the protective cap from the SFP module, as shown in
Figure 20 on page 35. Save the protective cap for future use.
3. Remove the two protective caps from one end of the LC-LC cable, as shown in
Figure 25 on page 38. Save the protective caps for future use.
Chapter 3. Cabling the storage subsystem
37
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Fibre-optic
cable
Protective cap
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Figure 25. Removing fiber-optic cable protective caps
4. Carefully insert this end of the LC-LC cable into an SFP module that is installed
in the DS4700. The cable connector is keyed to ensure it is inserted into the
SFP module correctly. Holding the connector, push in the cable until it clicks into
place, as shown in Figure 26.
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Figure 26. Inserting an LC-LC fibre-channel cable into an SFP module
5. Remove the two protective caps from the other end of the LC-LC cable. Save
the protective caps for future use.
6. Connect this end of the LC-LC cable to one of the following devices:
v An SFP module that is installed in a separate IBM DS4000 EXP storage
expansion enclosure
v An SFP module that is installed in a fibre channel switch port
v A fibre channel host bus adapter port
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Removing an LC-LC fibre-channel cable
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Attention: To avoid damaging the LC-LC cable or SFP module, make sure that
you observe the following precautions:
v Press and hold the lever to release the latches before you remove the cable from
the SFP module.
v Ensure that the levers are in the released position when you remove the cable.
v Do not grasp the SFP module plastic tab when you remove the cable.
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Complete the following steps to remove an LC-LC fibre-channel cable:
1. On the end of the LC-LC cable that connects into the SFP module or host bus
adapter, press down and hold the lever to release the latches, as shown in
Figure 27.
Lever
Latches
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Figure 27. LC-LC fibre-channel cable lever and latches
2. While pressing down the cable lever, carefully pull on the connector to remove
the cable from the SFP module, as shown in Figure 28.
Figure 28. Removing the LC-LC fibre-channel cable
3. Replace the protective caps on the cable ends.
4. Replace the protective cap on the SFP module.
Using LC-SC fibre-channel cable adapters
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The LC-SC fibre-channel cable adapter is a fiber-optic cable that is used to connect
an LC connector into one of the following devices that require SC connectors:
v 1-Gbps fibre channel switch
v Fibre channel host bus adapter
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Attention: The DS4700 does not support the attachment of storage expansion
enclosures that operate at 1 Gbps, such as the EXP500.
Chapter 3. Cabling the storage subsystem
39
For more information about connecting to these devices, see the documentation
that comes with the LC-SC fibre-channel cable adapter.
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LC connector
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f10ug012
SC connector
Figure 29. LC-SC fibre-channel cable adapter
The following sections provide the procedures for properly connecting and removing
an LC-SC fibre-channel cable.
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Connecting an LC-SC cable adapter to a device
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Statement 3:
Complete the following steps to connect an LC-SC fibre-channel cable adapter to a
device:
|
CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or
transmitters) are installed, note the following:
v Do not remove the covers. Removing the covers of the laser product could
result in exposure to hazardous laser radiation. There are no serviceable
parts inside the device.
v Use of controls or adjustments or performance of procedures other than
those specified herein might result in hazardous radiation exposure.
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DANGER
|
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Some laser products contain an embedded Class 3A or Class 3B laser
diode. Note the following.
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Laser radiation when open. Do not stare into the beam, do not view directly
with optical instruments, and avoid direct exposure to the beam.
1. Read the information in “Handling fiber-optic cables” on page 33.
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2. Connect one end of an LC-LC cable to an SFP module in the DS4700. For
instructions, see “Using LC-LC fibre-channel cables” on page 36.
3. Remove the two protective caps from the LC connector end of the LC-SC cable
adapter as shown in Figure 30. Save the protective caps for future use.
f10ug013
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Figure 30. Removing the LC-SC cable adapter protective caps
4. Carefully insert the other end of the LC-LC cable into the LC connector end of
the LC-SC cable adapter as shown in Figure 31. Push in the connector until it
clicks into place.
f10ug020
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Figure 31. Connecting an LC-LC cable into the LC-SC cable adapter
5. If you are connecting the DS4700 to a 1-Gbps fibre channel switch or fibre
channel host bus adapter, connect the SC connector end of the LC-SC cable
adapter to a Gigabit Interface Converter (GBIC) that is installed in the 1-Gbps
fibre channel switch or fibre channel host bus adapter. For more information
about connecting to these devices, see the documentation that comes with the
device.
Removing an LC-LC cable from an LC-SC cable adapter
Attention: To avoid damaging the LC-LC cable, make sure you press and hold
the lever to release the latches before you remove the cable from an LC-SC cable
adapter. Ensure that both levers are in the released position when removing the
cable. When removing the cable from the SFP module, make sure you do not grasp
the SFP module plastic tab.
Chapter 3. Cabling the storage subsystem
41
Complete the following steps to remove an LC-LC cable from an LC-SC cable
adapter:
1. On the end of the cable that connects into the LC connector end of the LC-SC
cable adapter, press down and hold the lever to release the latches. Figure 32
shows the location of the lever and latches.
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Lever
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f10ug018
Latches
Figure 32. LC-LC fibre-channel cable lever and latches
2. Carefully pull on the connector to remove it. Make sure you grasp the connector
and not the cable when removing the LC-LC cable from the LC-SC cable
adapter as shown in Figure 33.
f10ug015
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Figure 33. Removing the LC-LC fibre-channel cable from an LC-SC fibre-channel cable
adapter
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3. Replace the protective caps on the cable ends.
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Installing fiber-optic cables
To connect the fiber-optic cables, perform the following steps:
1. Remove the protective cap from the fiber-optic cable. See Figure 34 on page
43.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Fiber-optic
cable
Protective cap
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Figure 34. Removing caps from fiber-optic cables
2. Connect the fiber-optic cable to the installed SFP, as shown in Figure 35, using
the instructions as describe in “Connecting an LC-LC cable to an SFP module”
on page 37.
SFP module
Raid controller
Fiber-optic
cable
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Figure 35. Connecting cables to the installed SFP
3. Check the LEDs on the RAID controller. When the RAID controller is operating
properly, the amber Fault LED is off. For information about the status of the
RAID controller LEDs, see Table 14 on page 99.
4. To remove the fiber-optic cables, refer to the instructions described in
“Removing an LC-LC fibre-channel cable” on page 39.
Fibre channel connections
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DS4300 Fibre Channel connections consist of two host fibre channel loops and up
to one drive fibre channel loop, depending on the storage subsystem model. These
fibre channel connections are made through three SFP ports, which are labeled
“Host 1,” “Host 2,” and “Expansion.”
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Exception: The DS4300 single-controller storage subsystem (Model 6LU/6LX) does
not support drive loops or storage expansion enclosures.
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The host fibre channel loop provides the fibre path for host attachment. It can
consist of fibre channel cables, SFPs, host bus adapters, fibre channel switches,
Chapter 3. Cabling the storage subsystem
43
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and RAID controllers. The expansion drive (or storage expansion enclosure) fibre
channel loop provides the fibre path to the hard disk drives (HDDs) that are outside
the DS4300 storage subsystem chassis. The drive fibre channel loop consists of
fibre channel HDDs and optional DS4000 EXP storage expansion enclosures, fibre
channel cables, and SFPs.
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The DS4300 dual-controller storage subsystem (Model 60U/60X) supports
redundant disk-drive-loop configurations. You can build a redundant drive loop by
connecting one or more DS4000 EXP storage expansion enclosures to the
redundant RAID controllers. Then, use dual fiber-optic cables to connect one
storage expansion enclosure to another in a daisy-chain. For more information
about adding storage expansion enclosures, see “Connecting storage expansion
enclosures to the DS4300” on page 45.
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Redundant drive loop cabling overview
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The DS4300 with dual controllers storage subsystem supports one redundant drive
loop. A redundant drive loop consists of one or more storage expansion enclosures
connected to a controller using two sets of fibre channel cables. If one data path
fails, the controller uses the other data path to maintain the connection to the drive
group.
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Figure 36 shows a storage subsystem containing one storage subsystem and one
redundant drive loops with four storage expansion enclosures. Each storage
expansion enclosures group uses redundant drive loops to connect to the DS4300
Storage Subsystem.
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Attention: To prevent loss of storage expansion enclosure redundancy, connect
the storage expansion enclosures as shown in Figure 36.
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Note: The illustrations in this document might differ slightly from the hardware.
Storage
expansion
enclosure
group 1
Loop A
Loop B
Storage
Subsystem
d43nu4041
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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For specific information about how to cable the storage subsystem and storage
expansion enclosures, see “Connecting storage expansion enclosures to the
DS4300.”
Connecting storage expansion enclosures to the DS4300
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Attention: Before powering on the DS4300 storage subsystem, it must be
populated with at least two drives. If at least two drives are not installed in each
attached storage expansion enclosure or DS4300 storage subsystem, when you
power on the DS4300 and its attached storage expansion enclosures, your
standard storage partition key might be lost and must be regenerated using
instructions on the IBM DS4000 Solutions and Premium Features Web site:
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http://www-912.ibm.com/PremiumFeatures/
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In addition, the resulting insufficient load to the enclosure power supplies might
cause them to intermittently appear as failed, falsely indicating the power supplies
are bad. All drives in the DS4300 storage subsystem and the connected storage
expansion enclosure or enclosures must contain no prior configuration data.
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After you install the DS4300 dual-controller storage subsystem (Model 60U/60X),
you can connect DS4000 EXP storage expansion enclosures.
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Note: You cannot connect storage expansion enclosures to the DS4300
single-controller storage subsystem (Model 6LU/6LX). If you are using the
DS4300 single-controller storage subsystem, skip this section.
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You can connect storage expansion enclosures any time after you install the
storage subsystem, even while it is turned on and processing data. You can even
install one storage expansion enclosure now and an additional storage expansion
enclosure later.
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Up to 112 drives (including the 14 drives inside the DS4300 chassis) can be
supported by the DS4300 dual controller storage subsystems. The maximum
number of drives in a DS4300 subsystem depends on the models. (See the Notes
below for more information.
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|
In addition, if there is a mix of 14-drive (EXP7x0/EXP100) and 16-drive (EXP810)
storage expansion enclosures behind a DS4300, the maximum number of drives in
the drive loop will be decrease depending on the combinations/mix of 14-drive
(EXP7x0/EXP100) and 16-drive (EXP810) storage expansion enclosures. See
Table 11 on page 50.
Chapter 3. Cabling the storage subsystem
45
|
Important
1. The DS4300 single controller model 6LX/6LU does not support any
storage expansion enclosures. The DS4300 dual controller standard model
60U/60X supports up to three storage expansion enclosures by purchasing
up to three storage expansion enclosure attachment entitlements. The
DS4300 dual controller Turbo model 60U/60X comes with the entitlement
to support up to a maximum of seven storage expansion enclosures.
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2. If you want to connect up to seven storage expansion enclosures to the
DS4300 dual controller standard model 60U/60X, you must purchase the
Turbo option or buy the seven enclosure attachment license. Furthermore,
to add storage expansion enclosure attachment capability to the DS4300
single controller model 6LX/6LU, you must either purchase the DS4300
controller upgrade to Turbo controller option or the DS4300 controller
upgrade to the standard dual-controller and up to three additional storage
expansion attachment entitlements. Contact your IBM resellers or
marketing representatives for more information.
3. You can add only new storage expansion enclosures to the initial/new
installation of the DS4300 storage subsystem. This means that there must
be no existing configuration information in the drives installed in the
storage expansion enclosure or the DS4300 storage subsystem that you
want to install. If the drives in the DS4300 storage subsystem or the
storage expansion enclosure that you want to install currently contains
logical drives or configured hot spares, and you want them to be part of
the DS4300 storage subsystem, refer to the IBM System Storage DS4000
Hard Drive and Storage Expansion Enclosure Installation and Migration
Guide. Improper drive migration might cause loss of configuration and
other storage subsystem problems.
4. In addition to the information and procedures in this chapter, you can also
refer to the IBM System Storage DS4000 Hard Drive and Storage
Expansion Enclosure Installation and Migration Guide for the latest
required controller firmware versions and the supported combinations of
enclosure types that you can intermix behind a DS4300 subsystem.
Note: You must purchase the IBM System Storage FC/SATA Intermix
premium feature to combine SATA enclosures (DS4000 EXP100s or
EXP810s with SATA enhanced disk drive modules) with fibre
channel enclosures (DS4000 EXP700s, EXP710s, or EXP810s that
have fibre channel drives) in the same DS4300 Storage Subsystem
configuration.
5. The EXP700 expansion enclosure must be upgraded to an EXP710
expansion enclosure by using the DS4000 EXP700 Models 1RU/1RX
Switched-ESM Option Upgrade Kit for intermixing with the EXP810
expansion enclosures. In addition, the DS4300 controller firmware must be
at 06.19.xx.xx or higher.
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The following DS4000 storage expansion enclosure types are supported by the
DS4300 Storage Subsystem:
v DS4000 EXP700
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v DS4000 EXP710
v DS4000 EXP100
v DS4000 EXP810
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46
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Supported storage expansion enclosure configurations and intermix
combinations
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Although the DS4300 Storage Subsystem supports various types of DS4000
storage expansion enclosures, not all combinations of these supported storage
expansion enclosures are possible or supported as storage expansion enclosures
intermixed within a DS4300 Storage Subsystem configuration. In addition, if you
intermix storage expansion enclosures with SATA and FC drives within a DS4300
Storage Subsystem configuration, an FC/SATA intermix premium feature must be
purchased for that DS4300 Storage Subsystem. For additional information about
Intermix configurations, see the IBM TotalStorage DS4000 Fibre Channel and Serial
ATA Intermix Premium Feature Installation Overview (GC26-7713-01).
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For the DS4300 dual-controller standard model, the maximum number of storage
expansion enclosures in a DS4300 drive loop is three no matter what type of
storage expansion enclosures used or whether there is a mix of 14-drive and
16-drive storage expansion enclosure in the drive loop or not when the three
expansion attachment entitlement was purchased. Otherwise, the maximum number
of storage expansion enclosures in the drive loop is equaled to the number
indicated in the purchased storage expansion enclosure attachment entitlement
(one or two).
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For the DS4300 dual-controller Turbo model, the maximum number of storage
expansion enclosures in a DS4300 drive loop depending on whether the atttached
storage expansion enclosures are of 14-drive enclosures or 16-drive enclosures
only or of a combination of the 14-drive or 16-drive enclosures. Table 9 shows the
maximum number of enclosures in a DS4300 drive loop for various supported
DS4000 storage expansion enclosures, as well as the maximum number of
enclosures in the drive loop when intermixing supported enclosure models.
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Table 9. Storage expansion enclosure configurations for DS4300 dual-controller Turbo
models only
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EXP100
EXP700
EXP710
EXP810
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Maximum
number of
enclosures in a
DS4300 drive
loop
7 (or 82)
7
7
6 (or 73)
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Maximum
number of
enclosures in a
DS4300 drive
loop when
intermixing with
EXP700
7
7
7
Not supported1
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Maximum
number of
enclosures in a
DS4300 drive
loop when
intermixing with
EXP100
7
7
7
6
Chapter 3. Cabling the storage subsystem
47
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Table 9. Storage expansion enclosure configurations for DS4300 dual-controller Turbo
models only (continued)
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EXP100
EXP700
EXP710
EXP810
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Maximum
number of
enclosures in a
DS4300 drive
loop when
intermixing with
EXP710
7
7
7
6
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Maximum
number of
enclosures in a
DS4300 drive
loop when
intermixing with
EXP810
6
Not supported1
6
6
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Maximum
number of
enclosures in a
DS4300 drive
loop when
intermixing with
EXP700 and
EXP100
7
7
7
Not supported1
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Maximum
number of
enclosures in a
DS4300 drive
loop when
intermixing with
EXP700 and
EXP710
7
7
7
Not supported1
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Maximum
number of
enclosures in a
DS4300 drive
loop when
intermixing with
EXP100 and
EXP810
6
Not supported1
6
6
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Maximum
number of
enclosures in a
DS4300 drive
loop when
intermixing with
EXP710 and
EXP810
6
Not supported1
6
6
48
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Table 9. Storage expansion enclosure configurations for DS4300 dual-controller Turbo
models only (continued)
|
EXP100
EXP700
EXP710
EXP810
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Notes:
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DS4000 storage expansion enclosure models can be mixed in the same pair of
redundant drive loops. Table 10 shows whether an existing storage expansion
enclosure within a DS4300 redundant drive loop can support the addition of new
storage expansion enclosures of another model type. Table 11 on page 50 lists
possible 14-drive (EXP710/EXP100) and 16-drive (EXP810) storage expansion
enclosure intermix combinations, as well as total number of drives for each
combination for a DS4300 dual controller Turbo model.
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Note: Since the maximum number of drives that can be supported in the DS4300
dual controller Turbo models redundant drive loop pair is 112, IBM does not
support the use of partially filled drive enclosures when intermixing storage
expansion enclosures of different drive slot capacities to prevent the
possibility of going over the maximum of 112 drives in a drive loop.
Intermixing drive expansion enclosures with different a number of drive slots
will reduce the maximum number of drives that can be configured in a
redundant drive loop pair, as shown in Table 11 on page 50.
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Table 10. Support for new storage expansion enclosures within a DS4300 drive loop
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Existing EXP drive
expansion enclosure
in drive loop
New EXP drive expansion enclosure1
EXP100
EXP700
EXP710
EXP810 (FC or
SATA)
|
EXP100
Yes3
Yes3, 6
Yes3, 4, 6
Yes5, 6
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EXP700
Yes3, 6
Yes2
Yes4
No7
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EXP710
Yes3, 4, 6
Yes4
Yes4
Yes5, 6, 8
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EXP810 (FC or SATA)
Yes5, 6
No7
Yes5, 6, 8
Yes5, 6, 8
1. Only when the EXP700 is upgraded to an EXP710 with the DS4000 EXP700 Models
1RU/1RX Switched-ESM Option Upgrade Kit.
2. If there are no drives in the DS4300 subsystem internal drive slots and the only
enclosures connected are EXP100s, up to eight EXP100 storage expansion enclosures
can be connected to the DS4300 when using the special DS4300 NVSRAM file to
disable the DS4300 internal drive slots. This is the only configuration where eight 14
drive storage expansion enclosures can be attached to the DS4300.
3. If there are no drives in the DS4300 subsystem internal drive slots and the only
enclosures connected are EXP810s, up to seven EXP810 storage expansion enclosures
can be connected to the DS4300 when using the special DS4300 NVSRAM file to
disable the DS4300 internal drive slots. This is the configuration where seven 16 drive
storage expansion enclosures can be attached to the DS4300.
Chapter 3. Cabling the storage subsystem
49
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Table 10. Support for new storage expansion enclosures within a DS4300 drive
loop (continued)
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Notes:
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Table 11. Possible combinations of 14-drive and 16-drive storage expansion enclosures per
drive loop for DS4300 dual controller Turbo models only
1. The EXP100 and EXP710 operate at 2 Gbps FC speed only. Because the EXP810
operates at 2 Gbps and 4 Gbps FC speed, its enclosure speed must be set at 2 Gbps
before connecting to the DS4300 drive loop. Similarly, the EXP700 enclosure speed
switch must be set at 2 Gbps before connecting to the DS4300 drive loop.
2. Requires DS4300 controller firmware version 5.3x.xx.xx or 6.12.xx.xx.
3. The EXP100 requires DS4300 controller firmware version 5.41.xx.xx or higher.
Controller firmware version 6.12.xx.xx is required for intermixing EXP100, EXP700, and
EXP710 storage enclosures behind a DS4300 Storage Subsystem. It is recommended
that you use the latest general released firmware version 6.19.xx.xx if you do not have
the EXP700 storage expansion enclosures in the DS4300 drive loop.
4. The EXP710 requires DS4300 controller firmware version 6.12.xx.xx or higher. It is
recommended that you use the latest general released firmware version 6.19.xx.xx if
you do not have the EXP700 storage expansion enclosures in the DS4300 drive loop.
5. The EXP810 requires DS4300 controller firmware version 6.19.xx.xx or higher.
6. The FC/SATA intermix premium feature is required if there is a mix of FC and SATA
drives in the DS4300 Storage Subsystem.
7. The EXP700 requires the purchase of the DS4000 EXP700 Models 1RU/1RX
Switched-ESM Option Upgrade Kit if it is to be attached to EXP810s.
8. The EXP810 speed switch must be set to 2 Gbps.
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Number
of
EXP810s
(16
drives/
unit)
|
Total
number of
drives in a
mix
EXP710s
and
EXP810s
drive loop
Total
number
of drives
in
EXP810s
Number
of
EXP710/
EXP100s
(14
drives/
unit)
Total
number
of drives
in
EXP710/
EXP100s
Total
number
of drives
in the
DS4300
0
0
7
98
14
=
112
|
1
16
5
70
14
=
100
|
2
32
4
56
14
=
102
|
3
48
3
42
14
=
104
|
4
64
2
28
14
=
106
|
5
80
1
14
14
=
108
|
|
6
96
0
0
14
=
110
50
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Notes
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Table 12. Possible combinations of 14-drive and 16-drive storage expansion enclosures per
drive loop for DS4300 standard model
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Number
of
EXP810s
(16
drives/
unit)
|
Total
number of
drives in a
mix
EXP710s
and
EXP810s
drive loop
Total
number
of drives
in
EXP810s
Number
of
EXP710/
EXP100s
(14
drives/
unit)
Total
number
of drives
in
EXP710/
EXP100s
Total
number
of drives
in the
DS4300
0
0
3
42
14
=
56
|
1
16
2
28
14
=
58
|
2
32
1
14
14
=
60
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|
3
48
0
0
14
=
62
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For the latest information on requirements such as enclosure cabling schemes, the
minimum version of the controller, or enclosure ESM firmware required for
intermixing DS4000 storage expansion enclosures, refer to the IBM TotalStorage
DS4000 Hard Drive and Storage Expansion Enclosure Installation and Migration
Guide.
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Notes
Overview: Connecting storage expansion enclosures to a storage
subsystem
This section contains the following topics:
v “General rules and recommendations for cabling storage expansion enclosures”
v “Storage expansion enclosure cabling diagrams” on page 53
v “Steps for connecting storage expansion enclosures to a storage subsystem” on
page 60
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General rules and recommendations for cabling storage
expansion enclosures
|
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Note: This section also refers to the cabling diagrams in “Storage expansion
enclosure cabling diagrams” on page 53.
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The following are general rules or limitations to follow as a guideline when you
connect storage expansion enclosures to the storage subsystem:
v The DS4300 Storage Subsystem supports the connection of a maximum of one
redundant drive loop pairs. The maximum number of drive enclosures per drive
loop depends on the type of storage expansion enclosure and whether
intermixing storage expansion enclosures of different drive slots. For detailed
information, see Table 10 on page 49 and Table 11 on page 50.
v The DS4300 currently supports a maximum of 112 drives in either seven 14-drive
or a maximum of 110 drives with six 16-drive storage expansion enclosures per
drive loop in each controller. Two drive loops from the DS4300 expansion ports
(one from each controller) must be connected to the same set of storage
expansion enclosures to provide drive loop redundancy.
Refer to these general rules and recommendations when you complete the steps
described in “Steps for connecting storage expansion enclosures to a storage
subsystem” on page 60.
Chapter 3. Cabling the storage subsystem
51
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v When mixing different types of storage expansion enclosures in the same drive
channel pair, the Link Rate Setting must be set at 2 Gbps for each storage
expansion enclosure. IBM does not support different enclosure speed settings in
the same drive loop.
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In addition to the previously outlined general rules, it is strongly recommended that
you observe the following rules when connecting storage expansion enclosures to
the storage subsystem:
v Ensure that the enclosure ID of all enclosures in a DS4300 storage subsystem
configuration (including the DS4300 storage subsystem) is unique. Enclosure IDs
(sometimes known as tray IDs) consist of two digits (x10 and x1). In 14-drive
expansion enclosures, the enclosure ID must be set manually. In 16-drive
expansion enclosures, the enclosure ID is set automatically. Refer to the
Installation, User’s, and Maintenance Guide for your appropriate enclosure for
information on how to manually set the switches. If the enclosure IDs are not
unique, an error will be posted in the DS4300 subsystem Major Event Log (MEL)
and the ID conflict LED on the enclosure with same enclosure ID will be lit.
In addition, ensure that the single digit (x1) of the enclosure ID for every
enclosure (including the DS4300 storage subsystem) in a redundant drive loop
pair is unique. If you do not set the single digit of the enclosure IDs to be unique
among enclosures in a redundant drive loop pair, then drive loop errors might be
randomly posted in the DS4300 subsystem Major Event Log (MEL).
For example, with four enclosures attached to the DS4300, the correct enclosure
ID settings should be x1, x2, x3, and x4 (where x can be any digit that can be
set). Examples of incorrect settings would be 11, 21, 31, and 41 or 12, 22, 32, and
62. These examples are incorrect because the x1 digits are the same in all
enclosure IDs (either 1 or 2).
Important: Changing enclosure IDs on 14-drive enclosures with the mechanical
enclosure ID switch requires the power cycle of the DS4300 subsystem and all
enclosures in the configuration to activate the new settings. Changing the
enclosure IDs on 16-drive enclosures (EXP810s) does not require the power
cycle of all enclosures and the DS4300 subsystem.
If the enclosure IDs in your DS4000 subsystem configuration are not currently set
to have unique single digit values for the enclosures in the same redundant drive
loop pair, make the changes to the enclosure IDs in the next maintenance
schedule. This will prevent unnecessary downtime when you add enclosures of
different type (especially EXP810s) to the existing enclosures in the redundant
drive loop pair.
v When mixing EXP810 and EXP710 enclosures in the same drive loop with
EXP100 enclosures, all of the EXP810s and EXP710s must be grouped together
with the EXP100 connected to either end of the EXP810/EXP710 drive
expansion enclosure group. The primary reason for this grouping is because the
controller firmware considers the EXP810s and EXP710s to be the same
enclosure type (switched disk expansion unit type which have an
ESM-embedded fibre channel loop switch) despite being different models. These
two enclosure models must be grouped together if they are contained within a
drive loop.
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Note: When grouping the EXP810s and EXP710s together, you must cable all of
the EXP810s together, followed by all of the EXP710s or vice versa. Do
not randomly cable the EXP710s and EXP810s together in the drive loop.
Figure 37 on page 54 and Figure 38 on page 55 are examples of correctly
cabling the intermix of EXP100 with EXP810 and EXP710 enclosures. Figure 39
on page 56 and Figure 40 on page 57 are examples of incorrectly cabling the
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52
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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intermix of these enclosures. One shows the EXP100s cabled between the
EXP810s and EXP710s, while the other shows the EXP810s and EXP710s
intermingled, not with the EXP810s grouped separately from the EXP710s as
recommended.
v Figure 41 on page 58 is an example of correctly cabling a 14 drive expansion
enclosures to the DS4300. The Controller A drive port should be connected to
the IN port in the left ESM of the last expansion enclosure when cabling as
shown in Figure 41 on page 58. The Controller B drive port should be connected
to the OUT port in the right ESM of the first expansion enclosure when cabling
as shown in Figure 42 on page 59. Refer to Figure 45 on page 62 for the port
labeling.
v The DS4300 expansion (or drive) port must always be connected to the EXP810
port 1B, regardless of whether the port is on the EXP810 ESM A or ESM B. See
Figure 42 on page 59 is an example of correctly cabling the EXP810 ESM ports,
labeled 1B, to the DS4300 expansion port. Figure 43 on page 60 is an example
of incorrect cabling showing the connection from the DS4300 expansion port to
the incorrect EXP810 ESM port, labeled 1A. Refer to Figure 51 on page 67 for
the port labeling.
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|
|
Storage expansion enclosure cabling diagrams
These diagrams help show the information that is listed in “General rules and
recommendations for cabling storage expansion enclosures” on page 51.
|
Chapter 3. Cabling the storage subsystem
53
|
Port 1A
Port 1B
Seventh storage
expansion enclosure
(EXP810)
ESM A
ESM B
EXP810
Port 1A
Port 1B
Port 1A
Port 1B
Sixth storage
expansion enclosure
(EXP810)
ESM A
ESM B
EXP810
Port 1A
In
Fifth storage
expansion enclosure
(EXP710)
Out
Port 1B
In
Left ESM
Out
Right ESM
EXP710
In
Fourth storage
expansion enclosure
(EXP710)
Out
In
Left ESM
Out
Right ESM
EXP710
In
Third storage
expansion enclosure
(EXP710)
Out
In
Left ESM
Out
Right ESM
EXP710
In
Second storage
expansion enclosure
(EXP100)
Out
In
Left ESM
Out
Right ESM
EXP100
In
First storage
expansion enclosure
(EXP100)
Out
Left ESM
In
Out
Right ESM
EXP100
Loop A
Loop B
ds4300_mix3
|
| Figure 37. Correct cabling for an intermix of EXP100, EXP710, and EXP810 storage expansion enclosure (example 1)
|
|
54
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
|
In
Seventh storage
expansion enclosure
(EXP710)
Out
In
Out
Left ESM
Right ESM
EXP710
In
Sixth storage
expansion enclosure
(EXP710)
Out
In
Out
Left ESM
Right ESM
EXP710
In
Fifth storage
expansion enclosure
(EXP710)
Out
In
Out
Left ESM
Right ESM
EXP710
Port 1A
Port 1B
Fourth storage
expansion enclosure
(EXP810)
ESM A
ESM B
EXP810
Port 1A
Port 1B
Port 1A
Port 1B
Third storage
expansion enclosure
(EXP810)
ESM A
ESM B
EXP810
Port 1A
In
Second storage
expansion enclosure
(EXP100)
Out
Port 1B
In
Left ESM
Out
Right ESM
EXP100
In
First storage
expansion enclosure
(EXP100)
Out
Left ESM
In
Out
Right ESM
EXP100
Loop A
Loop B
ds4300_mix4
|
| Figure 38. Correct cabling for an intermix of EXP100, EXP710, and EXP810 storage expansion enclosure (example 2)
|
|
Chapter 3. Cabling the storage subsystem
55
|
Port 1A
Port 1B
Seventh storage
expansion enclosure
(EXP810)
ESM A
ESM B
EXP810
Port 1A
Port 1B
Port 1A
Port 1B
Sixth storage
expansion enclosure
(EXP810)
ESM A
ESM B
EXP810
Port 1A
In
Fifth storage
expansion enclosure
(EXP100)
Out
Port 1B
In
Left ESM
Out
Right ESM
EXP100
In
Fourth storage
expansion enclosure
(EXP710)
Out
In
Left ESM
Out
Right ESM
EXP710
In
Third storage
expansion enclosure
(EXP710)
Out
In
Left ESM
Out
Right ESM
EXP710
In
Second storage
expansion enclosure
(EXP710)
Out
In
Left ESM
Out
Right ESM
EXP710
In
First storage
expansion enclosure
(EXP100)
Out
Left ESM
In
Out
Right ESM
EXP100
Loop A
Loop B
ds4300_mix5
|
| Figure 39. Incorrect cabling for an intermix of EXP100, EXP710, and EXP810 storage expansion enclosure (example
| 1)
|
56
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
|
In
Seventh storage
expansion enclosure
(EXP710)
Out
In
Out
Left ESM
Right ESM
EXP710
Port 1A
Port 1B
Sixth storage
expansion enclosure
(EXP810)
ESM A
ESM B
EXP810
Port 1A
In
Fifth storage
expansion enclosure
(EXP710)
Out
Port 1B
Out
In
Left ESM
Right ESM
EXP710
In
Fourth storage
expansion enclosure
(EXP710)
Out
In
Out
Left ESM
Right ESM
EXP710
Port 1A
Port 1B
Third storage
expansion enclosure
(EXP810)
ESM A
ESM B
EXP810
Port 1A
In
Second storage
expansion enclosure
(EXP100)
Out
Port 1B
In
Left ESM
Out
Right ESM
EXP100
In
First storage
expansion enclosure
(EXP100)
Out
Left ESM
In
Out
Right ESM
EXP100
Loop A
Loop B
ds4300_mix6
|
| Figure 40. Incorrect cabling for an intermix of EXP100, EXP710, and EXP810 storage expansion enclosure (example
| 2)
|
Chapter 3. Cabling the storage subsystem
57
|
In
Last storage
expansion enclosure
(EXP500/100/7x0)
Out
In
Left ESM
Out
Right ESM
EXP500/100/7x0
Other storage
expansion enclosures
In
First storage
expansion enclosure
(EXP500/100/7x0)
Out
Left ESM
In
Out
Right ESM
EXP500/100/7x0
ds4300_8111
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| Figure 41. Cabling to 14-drive storage expansion enclosure ESM ports
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Port 1A
Port 1B
Last storage
expansion enclosure
(EXP810)
ESM A
ESM B
EXP810
Port 1A
Port 1B
Other storage
expansion enclosures
Port 1A
Port 1B
First storage
expansion enclosure
(EXP810)
ESM A
ESM B
EXP810
Port 1A
Port 1B
ds4300_8109
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| Figure 42. Correct cabling for EXP810 IB ports to the DS4300 expansion (or drive) port (example 1)
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Chapter 3. Cabling the storage subsystem
59
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Port 1A
Port 1B
Last storage
expansion enclosure
(EXP810)
ESM A
ESM B
EXP810
Port 1A
Port 1B
Other storage
expansion enclosures
Port 1A
Port 1B
First storage
expansion enclosure
(EXP810)
ESM A
ESM B
EXP810
Port 1A
Port 1B
ds4300_8110
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| Figure 43. Incorrect cabling for EXP810 IA port to the DS4300 expansion (or drive) port (example 1)
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Steps for connecting storage expansion enclosures to a storage
subsystem
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To connect storage expansion enclosures to the storage subsystem, perform the
following steps:
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Note: The following procedures are for cold-case procedures (in which the DS4300
is powered down when storage expansion enclosures are connected, as in
the case of initial installation). For hot-case procedures (in which the DS4300
is powered on when storage expansion enclosures are connected), refer to
the IBM System Storage DS4000 Hard Drive and Storage Expansion
Enclosure Installation and Migration Guide.
1. Follow the instructions in the Installation, User’s, and Maintenance Guide for
your DS4000 storage expansion enclosure to set up and mount the storage
expansion enclosures.
2. Determine a plan regarding the appropriate number of storage expansion
enclosures you will connect to the DS4300. If you are connecting external
storage expansion enclosures to the DS4300, ensure that the storage
expansion enclosures are populated with at least two drives before you power
Before you begin, review the information listed in “General rules and
recommendations for cabling storage expansion enclosures” on page 51 and
“Storage expansion enclosure cabling diagrams” on page 53.
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them on. Read the rules the storage expansion enclosure cabling limitations in
“General rules and recommendations for cabling storage expansion enclosures”
on page 51.
3. Depending on the type of storage expansion enclosure (14-drive or 16-drive)
that you plan to connect to the DS4300 drive mini hub ports, see“Using
EXP100, EXP700, or EXP710 storage expansion enclosures” or “Using EXP810
storage expansion enclosures” on page 66 for instructions on how to connect
the DS4300 to the enclosures.
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Note: Not all of the EXP100, EXP700, EXP710 or EXP810 enclosures can be
cabled together. For information on supported combinations, see
“Supported storage expansion enclosure configurations and intermix
combinations” on page 47.
4. In non-EXP810 storage expansion enclosures, such as EXP710 or EXP100, set
unique enclosure IDs (with the single digits unique among enclosures in a
redundant drive loop pair) for all storage expansion enclosures that are cabled
to the DS4300. See “Setting server/tray ID settings” on page 29, and then refer
to your storage expansion enclosure installation manual for details on setting
the enclosure ID.
5. For EXP810, ensure that the enclosure speed switch on the lower left corner on
the front of the EXP810s set to 2 Gbps.
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The DS4300 Storage Subsystem locates the drives in the storage expansion
enclosures after you power on the configuration. Always connect power to the
storage expansion enclosures first and then connect power to the DS4300. After
you have powered on the configuration, use the DS4000 Storage Manager client to
check the status of the new drives, correct any errors found, and configure the new
drives.
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Configuring the drive loops with storage expansion enclosures
This section provides information on how to connect supported storage expansion
enclosures in a redundant drive loop.
Using EXP100, EXP700, or EXP710 storage expansion enclosures
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This section provides instructions on how to connect one group of four EXP100,
EXP700, or EXP710 storage expansion enclosures in a redundant drive loop pair.
In addition, this procedure is also applicable when you have any number of
enclosures, up to the maximum number that can be attached in the DS4300
redundant drive loop pair.
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To complete this procedure, you will need two fiber-optic cables per storage
expansion enclosure.
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Attention: Handle and install fiber-optic cables properly to avoid degraded
performance or loss of communications with devices. Do not overtighten the cable
straps or bend the cables to a diameter of less than 76 mm (3 in.) or a radius less
than 38 mm (1.5 in.)
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Connecting EXP100, EXP700, or EXP710 in a redundant pair of
drive loop
This procedure describes the cabling for intermixing 14-drive storage expansion
enclosures together in a redundant pair of drive loops.
Chapter 3. Cabling the storage subsystem
61
1. Connect the first two storage expansion enclosures to drive loop A, as shown in
Figure 44.
Starting with the first storage expansion enclosure, connect a fiber-optic cable
from the In port on the left environmental services module (ESM) board to the
Out port on the left ESM board in the second (next) storage expansion
enclosure.
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In
In
Out
Left ESM
Fourth (last) storage
expansion enclosure
Out
Right ESM
EXP100/7x0
In
In
Out
Left ESM
Third storage
expansion enclosure
Out
Right ESM
EXP100/7x0
In
In
Out
Left ESM
Second storage
expansion enclosure
Out
Right ESM
EXP100/7x0
Loop A
In
In
Out
Left ESM
First storage
expansion enclosure
Out
Right ESM
EXP100/7x0
d4300_42c
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Figure 44. Connecting two EXP100, EXP700, or EXP710 storage expansion enclosures into
drive loop A
For the location of the ports on the storage expansion enclosure ESM board,
see Figure 45.
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In
Left ESM
Out
In
Out
Right ESM
EXP100/7x0
d4300_05a
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Figure 45. EXP100, EXP700, or EXP710 storage expansion enclosure ESM board In and
Out ports
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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2. Connect the same first two storage expansion enclosures to drive loop B, as
shown in Figure 46.
Starting with the first storage expansion enclosure, connect a fiber-optic cable
from the In port on the right ESM board to the Out port on the right ESM board
in the second (next) storage expansion enclosure.
In
Fourth (last) storage
expansion enclosure
Out
In
Left ESM
Out
Right ESM
EXP100/7x0
In
Third storage
expansion enclosure
Out
In
Left ESM
Out
Right ESM
EXP100/7x0
In
Second storage
expansion enclosure
Out
In
Left ESM
Out
Right ESM
EXP100/7x0
Loop A
First storage
expansion enclosure
In
Left ESM
Out
In
Loop B
Out
Right ESM
EXP100/7x0
d4300_42d
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Figure 46. Connecting two EXP100, EXP700, or EXP710 storage expansion enclosures into
redundant drive loop B
If you want to connect more storage expansion enclosures into drive loops A
and B, continue with Step 3; otherwise, go to “Connecting the redundant
EXP100, EXP700, or EXP710 drive loop to the DS4300” on page 64.
3. Connect additional storage expansion enclosures to drive loops A and B, as
shown in Figure 47 on page 64.
Starting with the second storage expansion enclosure, connect each additional
storage expansion enclosure into drive loops A and B in the same manner.
Leave the In port of the right ESM on the last storage expansion enclosure in
the loop and the Out port of the left ESM on the first storage expansion
enclosure unoccupied.
Chapter 3. Cabling the storage subsystem
63
|
In
Fourth (last) storage
expansion enclosure
Out
In
Left ESM
Out
Right ESM
EXP100/7x0
In
Third storage
expansion enclosure
Out
In
Left ESM
Out
Right ESM
EXP100/7x0
In
Second storage
expansion enclosure
Out
In
Left ESM
Out
Right ESM
EXP100/7x0
Loop A
First storage
expansion enclosure
In
Left ESM
Out
In
Loop B
Out
Right ESM
EXP100/7x0
d4300_43c
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Figure 47. Connecting additional EXP500, EXP100, EXP700, or EXP710 storage expansion
enclosures to drive loops A and B
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Connecting the redundant EXP100, EXP700, or EXP710 drive
loop to the DS4300
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After you configure the redundant drive loop using the EXP100, EXP700, or
EXP710 storage expansion enclosures, use the following procedure to connect a
redundant drive loop to the DS4300 Storage Subsystem. You will need two
fiber-optic cables to connect the redundant drive loop pair to the DS4300 Storage
Subsystem.
1. Connect drive loop A to the DS4300 Storage Subsystem, as shown in Figure 48
on page 65.
Starting with the last storage expansion enclosure in loop A, connect the In port
on the left ESM board to the expansion port located in the DS4300 controller A
module/CRU DS4300 Storage Subsystem.
Leave the Out port on the left ESM board on the first storage expansion
enclosure and the In (lower) connector on drive mini hub 4 unoccupied.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Loop A
Loop B
d4300_41a
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Figure 48. Connecting EXP100, EXP700, or EXP710 drive loop A to the DS4300
2. Connect drive loop B to the DS4300 Storage Subsystem, as shown in Figure 49
on page 66.
Starting with the first storage expansion enclosure in the loop, connect the Out
port on the right ESM board to the expansion port located in the DS4300
controller B module/CRU.
Leave the In port on the right ESM board on the last storage expansion
enclosure unoccupied.
Chapter 3. Cabling the storage subsystem
65
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Loop A
Loop B
d4300_41b
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Figure 49. Connecting redundant EXP100, EXP700, or EXP710 drive loops to the DS4300
Using EXP810 storage expansion enclosures
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The section provides instructions on how to connect one group of four EXP810
storage expansion enclosures in a redundant drive loop. Instructions for how to
connect a second group of four EXP810 storage expansion enclosures in a
redundant drive loop are also included in this procedure. In addition, this procedure
is also applicable when you have any number of enclosures, up to the maximum
number that can be attached in the redundant drive loop pair.
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To complete this procedure, you will need two fiber-optic cables per storage
expansion enclosure.
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Attention: Handle and install fiber-optic cables properly to avoid degraded
performance or loss of communications with devices. Do not overtighten the cable
straps or bend the cables to a diameter of less than 76 mm (3 in.) or a radius less
than 38 mm (1.5 in.)
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Connecting EXP810 in a redundant pair of drive loop
This procedure describes how to cable 16-drive EXP810 storage expansion
enclosure together in a redundant pair of drive loops.
1. Connect the first two storage expansion enclosures to drive loop A, as shown in
Figure 50 on page 67.
Starting with the first storage expansion enclosure, connect a fiber-optic cable
from port 1B on the ESM A board to port 1A on the ESM A board in the second
(next) storage expansion enclosure.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Port 1B
Fourth storage
expansion enclosure
Port 1A
ESM A
ESM B
EXP810
Port 1B
Port 1B
Third storage
expansion enclosure
Port 1A
ESM A
ESM B
EXP810
Port 1A
Port 1B
Second storage
expansion enclosure
Port 1B
Port 1A
ESM A
ESM B
Loop A
EXP810
Port 1A
Port 1B
Port 1B
First storage
expansion enclosure
ESM A
ESM B
EXP810
Port 1A
Port 1B
ds4500_8101
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Figure 50. Connecting two EXP810 storage expansion enclosures into drive loop A
For the location of the ports on the storage expansion enclosure ESM board,
see Figure 51.
Figure 51. EXP810 storage expansion enclosure ESM board ports 1A and 1B
2. Connect the same first two storage expansion enclosures to drive loop B, as
shown in Figure 52 on page 68.
Starting with the first storage expansion enclosure, connect a fiber-optic cable
from port 1A on the ESM B board to port 1B on the ESM B board in the second
(next) storage expansion enclosure.
Chapter 3. Cabling the storage subsystem
67
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Port 1B
Fourth storage
expansion enclosure
Port 1A
ESM A
ESM B
EXP810
Port 1B
Port 1B
Third storage
expansion enclosure
Port 1A
ESM A
ESM B
EXP810
Port 1A
Port 1B
Second storage
expansion enclosure
Port 1B
Port 1A
ESM A
ESM B
Loop A
EXP810
Port 1A
Port 1B
Port 1B
First storage
expansion enclosure
ESM A
ESM B
Loop B
EXP810
Port 1A
Port 1B
ds4500_8103
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Figure 52. Connecting two EXP810 storage expansion enclosures into redundant drive loop
B
If you want to connect more storage expansion enclosures into drive loops A
and B, continue with Step 3; otherwise, go to “Connecting the redundant
EXP810 drive loop to the DS4300” on page 69.
3. Connect additional storage expansion enclosures to drive loops A and B, as
shown in Figure 53 on page 69.
Starting with the second storage expansion enclosure, connect each additional
storage expansion enclosure into drive loops A and B in the same manner.
Leave port 1A on the ESM B of the last (fourth) storage expansion enclosure in
the loop and port 1A on the ESM A of the first storage expansion enclosure
unoccupied.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Port 1B
Fourth storage
expansion enclosure
Port 1A
ESM A
ESM B
EXP810
Port 1B
Port 1B
Third storage
expansion enclosure
Port 1A
ESM A
ESM B
EXP810
Port 1A
Port 1B
Second storage
expansion enclosure
Port 1B
Port 1A
ESM A
ESM B
Loop A
EXP810
Port 1A
Port 1B
Port 1B
First storage
expansion enclosure
ESM A
ESM B
Loop B
EXP810
Port 1A
Port 1B
ds4500_8104
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Figure 53. Connecting additional EXP810 storage expansion enclosures to drive loops A and
B
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Connecting the redundant EXP810 drive loop to the DS4300
After you configure the redundant drive loop using the EXP810 storage expansion
enclosures, use the following procedure to connect a redundant drive loop to the
DS4300 Storage Subsystem. You will need two fiber-optic cables to connect the
redundant drive loop pair (for example, loop A and loop B) to the DS4300 Storage
Subsystem.
1. Connect drive loop A to the DS4300 Storage Subsystem, as shown in Figure 54
on page 70.
Starting with the last (fourth) storage expansion enclosure in loop A, connect
port 1B on the ESM A board to the expansion port located in controller A
module/CRU on the DS4300 Storage Subsystem.
Leave port 1A on the ESM A board on the first EXP810 storage expansion
enclosure unoccupied.
Chapter 3. Cabling the storage subsystem
69
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Port 1B
Fourth storage
expansion enclosure
Port 1A
ESM A
ESM B
EXP810
Port 1B
Port 1B
Third storage
expansion enclosure
Port 1A
ESM A
ESM B
EXP810
Port 1A
Port 1B
Second storage
expansion enclosure
Port 1B
Port 1A
ESM A
ESM B
Loop A
EXP810
Port 1A
Port 1B
Port 1B
First storage
expansion enclosure
ESM A
ESM B
Loop B
EXP810
Port 1A
Port 1B
ds4300_8106
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Figure 54. Connecting EXP810 drive loop A to the DS4300
2. Connect drive loop B to the DS4300 Storage Subsystem, as shown in Figure 55
on page 71.
Starting with the first storage expansion enclosure in the loop, connect port 1B
on the ESM B board to the expansion port located in controller B module/CRU.
Leave port 1A on the ESM B board on the last (fourth) EXP810 storage
expansion enclosure unoccupied.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Port 1B
Fourth storage
expansion enclosure
Port 1A
ESM A
ESM B
EXP810
Port 1B
Port 1B
Third storage
expansion enclosure
Port 1A
ESM A
ESM B
EXP810
Port 1A
Port 1B
Second storage
expansion enclosure
Port 1B
Port 1A
ESM A
ESM B
Loop A
EXP810
Port 1A
Port 1B
Port 1B
First storage
expansion enclosure
ESM A
ESM B
Loop B
EXP810
Port 1A
Port 1B
ds4300_8107
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Figure 55. Connecting redundant EXP810 drive loops to the DS4300
One DS4300 and two or more storage expansion enclosures in a
mixed configuration
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Note: Not all of the EXP100, EXP700, EXP710 or EXP810 enclosures can be
cabled together. For information on supported combinations, see “Supported
storage expansion enclosure configurations and intermix combinations” on
page 47.
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When you plan to cable the DS4300 Storage Subsystem to storage expansion
enclosures that are in a mixed configuration, it is recommended that you cable the
same type of enclosures together. Since the EXP810s and EXP710s are generally
considered as the same type (enclosures with switched-ESMs type), these two
enclosure models must be grouped together if they are contained within a drive
loop. If a storage expansion type with non switched-ESMs, such as EXP100, is
cabled between the EXP710s and EXP810s, a "drive enclosure not cabled
correctly" error will be displayed in theDS4000 Storage Manager Recovery Guru.
Chapter 3. Cabling the storage subsystem
71
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In addition, it is strongly recommended, for such reasons as easier maintenance
and minimizing cabling errors, that you not only cable the same type of enclosures
together, but that you also cable together the enclosures within groups of the same
model. For example, cable the EXP710s together, followed by all of the EXP810s,
then followed by all of the EXP100s, and so on.
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Figure 56 on page 73 shows an example of the recommended cabling scheme of
mixed enclosure types behind a DS4300 Storage Subsystem using EXP100s,
EXP710s, and EXP810s storage expansion enclosures. This figure also shows the
IBM recommended cabling of enclosures when mixing EXP100s, EXP710s and
EXP810s enclosures in the same redundant drive loop pair - a group of EXP100s,,
followed by a group of EXP810s, followed by a group of EXP100s. The EXP810s is
between the EXP100s and EXP710s.
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In
Seventh storage
expansion enclosure
(EXP100)
Out
In
Out
Left ESM
Right ESM
EXP100
In
Sixth storage
expansion enclosure
(EXP100)
Out
In
Out
Left ESM
Right ESM
EXP100
Port 1A
Port 1B
Fifth storage
expansion enclosure
(EXP810)
ESM A
ESM B
EXP810
Port 1A
Port 1B
Port 1A
Port 1B
Fourth storage
expansion enclosure
(EXP810)
ESM A
ESM B
EXP810
Port 1A
In
Third storage
expansion enclosure
(EXP710)
Out
Port 1B
In
Left ESM
Out
Right ESM
EXP710
In
Second storage
expansion enclosure
(EXP710)
Out
In
Left ESM
Out
Right ESM
EXP710
In
First storage
expansion enclosure
(EXP710)
Out
Left ESM
In
Out
Right ESM
EXP710
Loop A
Loop B
ds4300_mix2
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Figure 56. One DS4300 and two or more storage expansion enclosures in a mixed
environment — Recommended cabling
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Perform the following steps to create the recommended cabling scheme shown in
Figure 56.
Chapter 3. Cabling the storage subsystem
73
1. Connect the storage expansion enclosures to drive loop A as follows:
a. Starting with the first storage expansion enclosure, connect a fiber-optic
cable from the In port on the left ESM to the Out port on the left ESM in the
second enclosure.
Leave the Out port on the left ESM in the first enclosure unoccupied.
b. Connect the In port on the left ESM in the second enclosure to the Out port
on the left ESM in the third enclosure.
c. Connect the In port on the left ESM in the third enclosure to port 1A on the
ESM A in the fourth enclosure.
d. Connect port 1B on the ESM A in the fourth enclosure to port 1A on the
ESM A in the fifth enclosure.
e. Connect port 1B on the ESM A in the fifth enclosure to the Out port on the
left ESM in the sixth enclosure.
f. Connect the In port on the left ESM in the sixth enclosure to the Out port on
the left ESM in the seventh enclosure.
2. Connect the storage expansion enclosures to drive loop B as follows:
a. Starting with the first storage expansion enclosure, connect a fiber-optic
cable from the In port on the right ESM to the Out port on the right ESM in
the second enclosure.
b. Connect the In port on the right ESM in the second enclosure to the Out
port on the right ESM in the third enclosure.
c. Connect the In port on the right ESM in the third enclosure to port 1B on the
ESM B in the fourth enclosure.
d. Connect port 1A on the ESM B in the fourth enclosure to port 1B on the
ESM B in the fifth enclosure.
e. Connect port 1A on the ESM B in the fifth enclosure to the Out port on the
right ESM in the sixth enclosure.
f. Connect the In port on the right ESM in the sixth enclosure to the Out port
on the right ESM in the seventh enclosure.
Leave the In port on the right ESM in the last enclosure unoccupied.
3. Connect drive loop A to the DS4300 Storage Subsystem as follows:
v Connect the In port on the left ESM in the seventh enclosure to the Out
(upper) port on drive mini hub 4 on the DS4300.
Leave the In (lower) port on drive mini hub 4 unoccupied.
4. Connect drive loop B to the DS4300 Storage Subsystem as follows:
v Connect the Out port on the right ESM in the first enclosure to the In (lower)
port on drive mini hub 2 on the DS4300.
Leave the Out (upper) port on drive mini hub 2 unoccupied.
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Host fibre channel connections
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You must determine how the host systems will connect to the storage subsystem.
You can connect up to two host systems directly to the storage subsystem, or you
can connect more than two hosts to the fibre channel storage subsystem through
switches. The illustrations in the following sections show common host system
configurations.
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Note: The default is one partition. Four-partition and eight-partition configurations
are provided as option upgrades, as is the option of additional attachments
to DS4000 EXP storage expansion enclosures. Contact your IBM resellers or
marketing representatives for more information.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Installing the storage subsystem configuration
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Using the information gathered in the previous sections, install the host systems
and host adapters.
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Notes:
1. See the documentation provided with your host adapters for installation
requirements and procedures.
2. Use the correct host adapter driver. For the latest supported host adapters and
drivers, go to the following Web site:
www.pc.ibm.com/support
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Attach fiber-optic interface cables to each host adapter. You will connect the other
end of the cables to the controller later in the installation process. For more
information about handling fiber-optic cables, see “Handling fiber-optic cables” on
page 33.
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Note: Do not install the storage-management software at this time, if it is not
already installed. Install the storage subsystem completely before you install
the software because you cannot test the software installation until the
hardware is connected.
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DS4300 dual-controller storage subsystem (Model 60U/60X)
configurations
This section includes the following examples of DS4300 dual-controller storage
subsystem (Model 60U/60X) configurations:
v Redundant host and drive loop Fibre Channel configuration (Figure 57 on page
76)
v Single SAN fabric zone configuration (Figure 58 on page 77)
v Dual SAN fabric zone configuration, with an additional DS4300 storage
subsystem and an EXP700 attached (Figure 59 on page 77)
v Two clusters (Figure 60 on page 78)
Note: These configurations have host and drive path failover protection and are
recommended for high availability.
Chapter 3. Cabling the storage subsystem
75
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Host system
with two host
adapters
Host system
with two host
adapters
Host system
with two host
adapters
Note: Node level
redundancy with
cluster software.
Switch
Switch
DS4300
DS4300
Host system
with two host
adapters
Host system
with two host
adapters
DS4300
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Figure 57. Redundant host and drive Fibre Channel loop configurations (Model 60U/60X)
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Host system
with two host
adapters
Host system
with two host
adapters
Switch
Switch
Interswitch link
DS4300
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Figure 58. Example of a single-SAN fabric zone configuration (Model 60U/60X)
Host system
with two host
adapters
Host system
with two host
adapters
Switch
Switch
DS4300
DS4300
DS4000 EXP700
(Storage expansion
enclosure)
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Figure 59. Example of a dual-SAN fabric zone configuration (Model 60U/60X)
Chapter 3. Cabling the storage subsystem
77
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Host system
with two host
adapters
Host system
with two host
adapters
Host system
with two host
adapters
Host system
with two host
adapters
Switch
Switch
Switch
Switch
DS4300
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Figure 60. Example of a two-cluster configuration (Model 60U/60X)
DS4300 single-controller storage subsystem (Model 6LU/6LX)
configurations
This section includes the following examples of DS4300 single-controller storage
subsystem (Model 6LU/6LX) configurations:
v Single server configuration with one adapter (Figure 61)
v Single server configuration with two adapters (Figure 62 on page 79)
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v Dual-server configuration with one adapter on each server (Figure 63 on page
79)
v Dual-server, single-SAN fabric zone configuration with one adapter on each
server (Figure 64 on page 80)
v Dual-server, dual-SAN fabric zone configuration with two adapters per server
(Figure 65 on page 80)
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DS4300 Single
Controller
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f64iug01
Host
Server
Figure 61. Example of a single server configuration with one adapter (Model 6LU/6LX)
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DS4300 Single
Controller
Figure 62. Example of a single server configuration with two adapters (Model 6LU/6LX)
Host
Server
Host
Server
DS4300 Single
Controller
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f64iug03
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f64iug02
Host
Server
Figure 63. Example of a dual-server configuration with one adapter on each server (Model
6LU/6LX)
Chapter 3. Cabling the storage subsystem
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Host
Server
Host
Server
DS4300 Single
Controller
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f64iug04
FC
Switch
Figure 64. Example of a dual-server, single-SAN fabric zone configuration with one adapter
on each server (Model 6LU/6LX)
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Host
Server
Host
Server
FC
Switch
DS4300 Single
Controller
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DS4300 Single
Controller
f64iug05
FC
Switch
Figure 65. Example of a dual-server, dual-SAN fabric zone configuration with two adapters
per server (Model 6LU/6LX)
Connecting hosts to the RAID controllers
Complete the procedure that is appropriate for your storage subsystem:
v “Steps for connecting hosts to a DS4300 dual-controller storage subsystem
(Model 60U/60X)” on page 81
v “Steps for connecting hosts to a DS4300 single-controller storage subsystem
(Model 6LU/6LX)” on page 81
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Steps for connecting hosts to a DS4300 dual-controller storage
subsystem (Model 60U/60X)
To connect a host adapter to a DS4300 dual-controller storage subsystem (Model
60U/60X), complete the following steps:
1. Install an SFP in a host port on the RAID controller.
2. Connect the host-system fibre channel cables between the RAID controller host
ports and the HBA ports or fibre channel switch ports. Figure 66 shows the
location on the RAID controllers where the host-system cables connect.
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Controller A
Host A: Host Adapter 1
(or from managed hub
or switch)
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Controller B
Host A: Host Adapter 2
(or from managed hub
or switch)
Figure 66. Location of host cables (Model 60U/60X)
For examples of redundant, partially redundant, and nonredundant host and drive
loop configurations, see “Host fibre channel connections” on page 74.
Steps for connecting hosts to a DS4300 single-controller storage
subsystem (Model 6LU/6LX)
To connect a host adapter to a DS4300 single-controller storage subsystem (Model
6LU/6LX), complete the following steps:
1. Install an SFP into a host port on the RAID controller.
2. Connect the host-system fibre channel cables between the RAID controller host
ports and the HBA ports or fibre channel switch ports. Figure 67 on page 82
shows the location on the RAID controller where the host-system fibre channel
cables connect.
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Chapter 3. Cabling the storage subsystem
81
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Figure 67. Location of host cables (Model 6LU/6LX)
Configuring the storage subsystem
You must configure the storage subsystem configuration after you install the storage
subsystem in a rack. Use the information in the following sections to configure your
storage subsystem configuration.
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Storage subsystem management methods
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Before you configure the storage subsystem, determine which method of storage
subsystem management you want to use. You can manage the storage subsystems
in either of two ways: host-agent management or direct-management.
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Note: If the operating system of the host server that the storage subsystem logical
drive(s) is mapped to is not the Microsoft® Windows NT® platform, you have
to make an out-of-band direct management connection to the storage
subsystem to set the correct host type first. Then, the server will be able to
recognize the storage subsystem correctly for in-band management.
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Host-agent management method
This method requires host-agent software that is installed on the host server. The
host-agent software allows the DS4000 storage manager client program to manage
the DS4000 storage subsystem using the same fibre channel connections between
the host server and the storage subsystem. You must install at least one
management station and a software-agent host. The management station can be
the host or a workstation on the Ethernet network. A management station will have
the client software installed. Figure 68 on page 83 shows the host-agent
management method.
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Controller
Controller
Host-agent
software
Client software
Management station
(one or more)
Fibre Channel
I/O path
Controller
Note: The client software is
installed on one or more
management systems,
or on the host computer.
Controller
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Ethernet
Figure 68. Host-agent managed storage subsystems
Chapter 3. Cabling the storage subsystem
83
Direct-management method
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This method uses Ethernet connections from a management station to each
controller. You must install at least one management station. The management
station can be the host or a workstation on the Ethernet network. A management
station will have the client software installed. Attach Ethernet cables to each
management station (one pair per storage subsystem). You will connect the cables
to each controller later when you install the storage subsystem. Figure 69 shows
the direct management method.
Controller
Controller
Host computer
Fibre Channel
I/O path
Note: The client software is
installed on one or more
management systems,
or on the host computer.
Controller
Controller
Storage subsystems
Ethernet
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Management station
Figure 69. Direct-managed storage subsystems
Connecting secondary interface cables
Use the Ethernet interface ports on the back of the storage subsystem to connect
the controllers for direct management of the storage subsystems.
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DS4300 single-controller storage subsystem (Model 6LU/6LX)
Connect an Ethernet cable from the storage-management station to the Ethernet
port of the controller.
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DS4300 dual-controller storage subsystem (Model 60U/60X)
Connect a pair of Ethernet cables from the storage-management station to the
Ethernet ports for Controller A (located on the left) and Controller B (located on the
right) on the back of the storage subsystem. Figure 70 on page 85 shows the
location of the ports.
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Controller A
Ethernet port
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Controller A
Serial port
Controller B
Ethernet port
Controller B
Serial port
Figure 70. Ethernet and serial port locations
Important: The serial interface ports are intended to be used by service technicians
to perform diagnostic operations on the storage subsystem. Inappropriate use will
result in loss of system availability, loss of data, or both.
Power cabling
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The DS4300 dual-controller storage subsystem (Model 60U/60X) uses two standard
power cords, and the single-controller storage subsystem (Model 6LU/6LX) uses
only one.
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You can connect the power cords to a primary power unit inside the rack, such as a
properly grounded ac distribution unit, or to an external source, such as a properly
grounded electrical outlet.
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If you have not already done so, attach the power cords, using the following
illustration for the location of the component parts.
Lever
AC power
connector
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Strain-relief
clamp
AC power
switch
Figure 71. Power cord locations
Complete the following steps to attach the power cords:
1. Wrap the strain-relief clamp around the power cord approximately 20 cm (8 in.)
from the power supply connection end.
2. Attach the power-supply nut, and tighten it securely.
3. Connect the power cord to the power supply.
4. Plug the power cord into a properly grounded electrical outlet.
Note: To maintain power redundancy on the DS4300 dual-controller storage
subsystem (Model 60U/60X), plug the storage subsystem’s right and the
left power supplies into two independent external power circuits through
Chapter 3. Cabling the storage subsystem
85
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ac distribution units inside a rack cabinet or directly into external
receptacles. Similarly, the right and left power supplies of the DS4000
storage expansion enclosures attached to the DS4300 storage
subsystem should be plugged into the same two independent external
power circuits as the DS4300 storage subsystem. See Figure 72 for an
example of redundant power cabling.
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Exception: The DS4300 single-controller storage subsystem (Model
6LU/6LX) has only one power supply, so it does not support power
redundancy.
Ladder cable connector
Ladder cable
Storage expansion
enclsoure
power supplies
Controller power supplies
AC distribution units
AC distribution unit
power cord
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Figure 72. Redundant ac power connections to controllers and storage expansion enclosures
For details about power requirements, see “Specifications” on page 18.
5. Go to “Turning the storage subsystem on and off” on page 92 for the initial
startup of the storage subsystem.
Installing the storage-management software
Install the storage-management software by using the procedures in the IBM
DS4000 Storage Manager Installation and Support Guide for your operating system.
Use that document and the online help to configure the logical drives, partitions,
and so on for the RAID controllers. Use your operating system documentation to
make the new logical drives accessible to the operating system.
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Note: Make sure that you start the storage-management software to continuously
monitor the status of the storage subsystem. For information about the
importance of this information, see “Monitoring status through software” on
page 96.
Setting up IP addresses for DS4000 storage controllers
After you install DS4000 Storage Manager (as described in the DS4000 Storage
Manager Installation and Support Guide for your host operating system), complete
one of the following procedures to set up IP addresses:
v “Steps for setting up the DHCP/BOOTP server and network”
v “Steps for assigning static TCP/IP addresses to the DS4000 controllers”
Steps for setting up the DHCP/BOOTP server and network
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To complete this procedure, you must have the following components:
v A DHCP or BOOTP server
v A network management station (NMS) for Simple Network Management Protocol
(SNMP) traps
v A host that is connected to a storage subsystem through a fibre-channel I/O path
v A management station that is connected by an Ethernet cable to the storage
subsystem controllers
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Note: You can avoid DHCP/BOOTP server and network tasks either by using the
default controller IP addresses, or by assigning static IP addresses to the
controller, as described in the next section.
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Complete the following steps to set up the DHCP/BOOTP server and network:
1. Get the MAC address from each controller blade.
2. Complete whichever of the following steps is appropriate for your server:
v On a DHCP server, create a DHCP record for each of the MAC addresses.
Set the lease duration to the longest time possible.
v On a BOOTP server, edit the bootptab file to add in the entries that associate
the MAC address tab with the TCP/IP address.
3. Connect the DS4000 storage subsystem Ethernet ports to the network.
4. Boot the DS4000 storage subsystem.
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The DHCP server automatically assigns new IP addresses to the controller Ethernet
port.
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Steps for assigning static TCP/IP addresses to the DS4000 controllers
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To complete this procedure, you must have the following components:
v A host that is connected to a storage subsystem through a fibre-channel I/O path
v A management station that is connected by an Ethernet cable to the storage
subsystem controllers
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Complete the following steps to assign static TCP/IP addresses to the DS4000
storage subsystem controllers, using default TCP/IP addresses that are assigned to
the DS4000 storage subsystem controllers during manufacturing:
1. Make a direct management connection to the DS4000 storage subsystem, using
the default TCP/IP addresses:
v Controller A: 192.168.128.101
Chapter 3. Cabling the storage subsystem
87
v Controller B: 192.168.128.102
v Subnet Mask: 255.255.255.0
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Note: For a DS4000 subsystem that has two Ethernet ports per controller, such
as the DS4200, DS4700 and DS4800, use the Ethernet port that is
labeled #1.
2. Start the DS4000 Storage Manager client software. The Enterprise Management
window opens.
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3. Add the DS4000 subsystem to the DS4000 Enterprise Management domain
using the default IP addresses.
4. In the Enterprise Management window, click on the name of the default storage
subsystem. The Subsystem Management window opens.
5. In the Subsystem Management window, right-click the controller icon and select
Change —> Network Configuration in the pull-down menu. The Change
Network Configuration window opens.
6. In the Change Network Configuration window, click on the Controller A and
Controller B tabs and type the new TCP/IP addresses in their appropriate fields.
Click OK.
7. Close the Subsystem Management window, wait at least five minutes, then
delete the default DS4000 storage subsystem entry in the Enterprise
Management window. The default DS4000 storage subsystem entry still
displays, but shows an “unresponsive” icon.
8. If applicable, change the IP address of the Ethernet port in the management
station to a value that is on the same TCP/IP subnet as the controller Ethernet
port IP addresses that you just assigned. Exit DS4000 Storage Manager, then
restart.
9. Add a new storage subsystem entry in the Enterprise Management window,
using the new assigned IP addresses.
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Note: To manage storage subsystems through a firewall, configure the firewall to
open port 2463 to TCP data.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Chapter 4. Operating the storage subsystem
To ensure optimal operation of your system, always follow these best practices
guidelines:
v Periodically, perform a full backup of the data on your storage drives.
v Before any planned system shutdown or after any system changes (additions,
removals, or modifications), save controller subsystem profiles as explained in
the Storage Manager guide for your operating system.
v Ensure that your system is in an optimal state before shutting down. Never turn
the power off if any fault light is lit; be sure to resolve any error conditions before
you shut down the system.
v During any maintenance or attended power-up procedure, carefully follow the
power-up sequence listed in “Turning on the storage subsystem” on page 92.
Each component of the subsystem should be checked that it is powered-on in
the proper order during this entire power-up procedure to ensure the controller
will be able to optimally access all of your storage subsystems.
v The storage subsystem supports simultaneous power-up to the system
components; however, you should always follow the power-up sequence listed in
“Turning on the storage subsystem” on page 92 during any attended power-up
procedure.
v A storage system in an optimal state should recover automatically from an
unexpected shutdown and unattended simultaneous restoration of power to
system components. After power is restored, call IBM support if any of the
following conditions occur:
– The storage subsystem logical drives and arrays are not displayed in the
Storage Manager client.
– The storage subsystem logical drives and arrays do not come online.
– The storage subsystem logical drives and arrays seem to be degraded.
v Using the DS4000 Storage Manager client, save the DS4000 subsystem
configuration profile to a disk that is not affected every time you make changes to
the DS4000 subsystem configuration (such as logical drive creation or
modification, or storage partitioning changes).
v DS4300 models 60U/60X only: To maintain power redundancy, plug the DS4300
storage subsystem’s right and left power supplies into two independent external
power circuits through ac distribution units inside a rack cabinet or directly into
external receptacles. Similarly, the right and left power supplies of the DS4000
storage expansion enclosures attached to the DS4300 storage subsystem should
be plugged into the same two independent external power circuits as the DS4300
storage subsystem. This ensures that the DS4300 storage subsystem and all its
attached storage expansion enclosures will have power if only one power circuit
is available. In addition, having all the right or all the left power supplies plug into
the same power circuit will enable the components in the storage subsystem to
power on simultaneously during an unattended restoration of power. See
Figure 72 on page 86 for an example of redundant power connections.
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Performing the DS4000 Health Check process
The DS4000 Health Check process is a sequence of suggested actions developed
by IBM to help users verify and maintain the optimal performance of their DS4000
storage configurations. The information that you collect in these steps also helps
provide IBM Service with important information needed for problem troubleshooting
during IBM Service calls.
© Copyright IBM Corp. 2005, 2006
89
Perform the following Health Check tasks after the initial configuration of your
DS4000 Storage Subsystem, and after all configuration sessions. It is also
recommended that you set a regular schedule of periodic Health Check evaluations
in order to keep your DS4000 code current and to preserve optimal data access
and performance.
1. Monitor the Recovery Guru in the Storage Manager client for any obvious
storage subsystem errors or problem conditions.
2. Gather and save the following DS4000 storage subsystem event logs for review
by IBM Service. These event logs should be gathered periodically for regular
Health Check monitoring regardless of the state of the Recovery Guru. (You can
collect all these logs at once and zip them into a single file by clicking
Advanced Troubleshooting Collect All Support Data in the DS4000
Storage Manager Subsystem Management window.)
v DS4000 storage subsystem management event log (MEL)
v Storage Subsystem Profile or DS4000 Profile
v Read-Link Status (RLS) data
In addition, you should also collect event logs for the host servers that have
mapped logical drives from the storage subsystem.
Attention: Save these event log files to a server disk that will remain
accessible in the event of a DS4000 storage configuration failure. Do not save
these event log files only to a LUN in the DS4000 Storage Subsystem.
3. Use the Storage Subsystem Profile or DS4000 Profile to verify that the following
firmware levels are at the latest versions supported for your DS4000 storage
subsystem:
v Controller firmware
v ESM firmware
v Drive firmware
If you discover your firmware is not up-to-date, upgrade the firmware and
software to the latest level appropriate to your DS4000 storage configuration.
See “Web pages” on page 91 for information about where to find the latest
firmware and software.
Attention: You must resolve Recovery Guru errors or problems before
upgrading firmware.
Save the storage subsystem profile before performing any controller or ESM
firmware upgrades. Save the storage subsystem profile and all *.cfg files to a
server disk that will remain accessible in the event of a DS4000 storage
configuration failure.
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Note: When you upgrade firmware, you must upgrade all client package
components to the same release level. For example, if you are upgrading
your controller firmware from version 5.x to version 6.x, you must also
upgrade your Storage Manager client to version 9.x or higher. If your
host system uses RDAC, upgrading controller firmware from version 5.x
to version 6.x might also require host software updates, such as RDAC
updates and HBA driver updates. Refer to the IBM DS4000 Web site for
detailed instructions.
4. Use the Storage Subsystem Profile or DS4000 Profile to verify that the following
functions are enabled:
v For all DS4000 models, Media Scan should be enabled both at the controller
level and at the LUN level.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
v For all DS4000 models, the read/write cache should be enabled. In addition,
use the Storage Subsystem Profile to verify that cache is matched between
the controllers.
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Web pages
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IBM maintains pages on the World Wide Web where you can get the latest
technical information and download device drivers and updates.
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For DS4000 information, go to the following Web site:
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www.ibm.com/servers/storage/support/disk/
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For the latest information about operating system and HBA support, clustering
support, SAN fabric support, and Storage Manager feature support, see the
TotalStorage® DS4000 Interoperability Matrix at the following Web site:
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www.ibm.com/servers/storage/disk/ds4000/interop-matrix.html
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Hardware responsibilities
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In addition to the Health Check steps described above, regular hardware inspection
and maintenance helps to support the optimal performance of your DS4000 storage
configuration. You should periodically inspect the fibre channel components of your
DS4000 storage configuration.
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The following guidelines are suggested:
v Maintain an up-to-date storage subsystem profile for your DS4000 storage
configuration. Save the profile to a server disk that will remain accessible in case
of a DS4000 storage configuration failure. Do not save the profile only to a LUN
in the DS4000 Storage Subsystem.
v Develop a change management plan. The plan should include schedules for
updating subsystem firmware and server host software.
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Note: Some updates might require storage subsystem downtime.
Use IBM-approved fibre channel cables for all situations. Note in your
configuration documentation whether any cables are not IBM-approved.
Create and maintain a cabling diagram of the current SAN configuration. Keep
this diagram updated as you make configuration changes, and keep the cabling
diagram available for review.
Create and maintain a list of other components that are being used within the
cabling diagram (such as the host system, fibre channel switches, and other SAN
attachments).
Ensure that all ESMs are properly seated.
v
v
v
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Note: You can find details on many of these inspection and maintenance
responsibilities in the appropriate sections of this document.
v Ensure that all drives are properly seated.
v Ensure that all SFP modules are properly seated.
v Confirm fibre channel cable loop size. (IBM specifications call for at least 3-inch
cable loops, but it is recommended that you use 6-inch cable loops or longer.)
v Ensure proper fibre channel cable management.
v Ensure proper air flow and temperature for all components in your EXP810
storage configuration.
Chapter 4. Operating the storage subsystem
91
In addition to these inspection and maintenance responsibilities, IBM also strongly
recommends DS4000 training for staff that supports DS4000 storage configurations.
Although training is not a part of the Health Check process, DS4000 training
reduces the potential for configuration problems and contributes to the overall
health of the system.
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Turning the storage subsystem on and off
This section contains instructions for turning the storage subsystem on and off
under normal and emergency situations.
If you are turning on the storage subsystem after an emergency shutdown or power
outage, see “Restoring power after an emergency shutdown” on page 95.
Turning on the storage subsystem
Important: You must turn on the storage expansion enclosures and verify that the
storage expansion enclosures’ FC connections are optimal by checking
the indicator lights before you turn on the DS4300 storage subsystem.
The controllers might not recognize the correct configuration if the hard
disk drives are powered up after the DS4300 storage subsystem. For
instructions on powering up the storage expansion enclosures, refer to
the storage expansion enclosure documentation.
Note: Always wait at least 30 seconds between the time you turn off a power
switch and the time you turn on the power again.
Use this procedure to turn on the power for the initial startup of the storage
subsystem:
1. Verify the following:
a. All communication and power cables are plugged into the back of the
storage subsystem and a properly grounded ac electrical outlet.
b. All hard disk drives are locked securely in place. For more information, see
“Installing hot-swap drives” on page 121.
Note: At least two drives must be present before you start the DS4300
storage subsystem.
Attention: If you are restarting the system after a normal shutdown, wait at
least 30 seconds before you turn on the power by using the power-on sequence
in step 2.
2. Check the system documentation for the hardware devices that you intend to
power up, and then determine the proper startup sequence. Use the following
power-on sequence, where applicable:
a. Turn on the power to the supporting devices (for example, Ethernet switches
and management stations) before the storage subsystem.
Attention: If you will be directly managing the storage array, you must set
up the Dynamic Host Configuration Protocol (DHCP) or BOOT-P server
before turning on the power. Setting up the server allows the controllers to
obtain the corresponding IP address when you turn on the power to the
array module. For more information, see the software installation guide for
your operating system.
b. You must turn on the storage expansion enclosures before the storage
subsystem. The controllers might not recognize the correct configuration if
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
the drives are powered up after the storage subsystem. For instructions on
powering up the storage expansion enclosures, see the storage expansion
enclosure documentation.
c. Turn on the power to the storage subsystem; then restart or turn on the
power to the host.
Note: Depending on your operating system, you might not have to restart
the host. For more information, see the software installation guide for
your operating system.
3. Turn on the power to each device, based on the power-on sequence in step 2
on page 92. To turn on power to the storage subsystem, turn on the
power-supply switches on the back of the storage subsystem. You must turn on
both power-supply switches to take advantage of the redundant power supplies.
4. Use the storage-management software and the Fault LEDs to check the overall
status of the storage subsystem and its components. All LEDs should be green
on the front of the storage subsystem. If they are not, use the
storage-management software to diagnose the problem (see “Monitoring status
through software” on page 96).
Note: The green Drive active LED and amber Drive fault LED below the drive
CRUs might flash intermittently as the drives spin-up. Wait until the
storage subsystem is finished powering up before checking the LEDs on
the front of the storage subsystem. For more information, see “Checking
the LEDs” on page 97.
Turning off the storage subsystem
Attention: Except in an emergency, never turn off the power if any storage
subsystem Fault LEDs are on. Correct the fault before you turn off the power. Use
the storage-management software and the Fault LEDs to check the overall status of
the storage subsystem and its components. All LEDs should be green on the front
of the storage subsystem. If they are not, use the storage-management software to
diagnose the problem (see “Monitoring status through software” on page 96). This
ensures that the storage subsystem will power up correctly later. For more
information, see “Troubleshooting” on page 145.
The storage subsystem is designed to run continuously, 24 hours a day. After you
turn on the storage subsystem, do not turn it off. Turn off the power only when:
v Instructions in a hardware or software procedure require you to turn off the
power.
v A service technician tells you to turn off the power.
v A power outage or emergency situation occurs (see “Performing an emergency
shutdown” on page 95).
Statement 5
CAUTION:
The power control button on the device and the power supply do not turn off the
electrical current supplied to the device. The device also might have more than one
power cord. To remove all electrical current from the device, ensure that all power
cords are disconnected from the power source.
Chapter 4. Operating the storage subsystem
93
Statement 5
2
1
Use the following procedure to turn off the power:
1. Before proceeding, use the storage-management software to determine the
status of the system components and special instructions. The operating system
software might require you to perform other procedures before you turn off the
power.
2. Use the storage-management software to check the status of the storage
subsystem. Correct problems that are reported before you turn off the power.
3. Perform the following steps:
a. Stop all I/O activity to the storage subsystem and attached storage
expansion enclosures. Make sure of the following:
v All of the green Drive active LEDs on the front of the storage subsystem
(and on all attached storage expansion enclosures) are not flashing.
v The green Cache active LEDs located on the controller modules viewable
from the back of the DS4300 storage subsystem are off.
b. Before the storage subsystem is powered off, use the operating system
software to either disconnect the storage subsystem logical drives from the
host or to flush the logical drive data cache in the host server memory.
Attention: To turn off all power to the storage subsystem, you must turn off
both power-supply switches and disconnect both power cords. Use the
procedure in step 4 for the proper shutdown sequence.
4. Turn off the power to each device based on the following shutdown sequence:
a. Turn off power to the host before the storage subsystem. If the host must
stay powered on to support an existing network, see the operating system
documentation for information about disconnecting the storage subsystem
logical drives from the host before the storage subsystem is powered off.
b. Turn off power to the storage subsystem before you turn off power to the
storage expansion enclosures. Turn off both power supply switches on the
back of the storage subsystem.
c. Turn off power to other supporting devices (for example, management
stations, fibre-channel switches, or Ethernet switches).
Note: You do not need to perform this step if you are servicing only the
storage subsystem.
5. After you perform the necessary maintenance procedures, turn on the power
using the procedure in “Turning on the storage subsystem” on page 92.
Restoring power after an unexpected shutdown
The storage subsystem might shut down unexpectedly under any of the following
conditions:
Attention:
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There might be data loss in each of the following cases:
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
v The internal temperature of the storage subsystem exceeds the maximum
operating temperature (an over-temperature condition).
If both fan CRUs fail or are unable to maintain an internal temperature below
70°C (158°F), one or both of the power supplies in the storage subsystem will
shut down. If both power supplies shut down, the unit is inoperable.
The storage-management software warns you if the temperature of the unit is
rising, before it has risen sufficiently to shut down the power supplies. The first
warning comes when the storage subsystem internal temperature exceeds 45°C
(113°F). The storage subsystem shuts down if the temperature rises to 70°C
(158°F).
v There is a general power failure or a loss of power to the unit.
v You are forced to shut down the storage subsystem without performing the
normal shutdown procedures (listed in “Turning off the storage subsystem” on
page 93) because of an emergency situation.
Attention: To avoid damage to the hardware, take special care when restarting
the system after an unexpected shutdown.
If the storage subsystem shuts down unexpectedly, go to “Restoring power after an
over-temperature shutdown” on page 96. Otherwise, go to “Restoring power after
an emergency shutdown.”
Note: Unattended restoration of power is supported; however, if power restoration
is attended, you should follow the best practices guidelines and the power
restoration sequence in “Turning on the storage subsystem” on page 92.
Performing an emergency shutdown
Attention: Emergency situations might include fire, flood, extreme weather
conditions, or other hazardous circumstances. If a power outage or emergency
situation occurs, always turn off all power switches on all computing equipment.
This will help safeguard your equipment from potential damage due to electrical
surges when power is restored. If the storage subsystem loses power unexpectedly,
it might be due to a hardware failure in the power system or midplane (see
“Troubleshooting” on page 145).
Use the following procedure to shut down the storage subsystem during an
emergency:
1. If you have time, stop all I/O activity to the storage subsystem by shutting down
the host or disconnecting the storage subsystem logical drives through the host.
2. Check the LEDs (front and back). Make note of any Fault LEDs that are on so
you can correct the problem when you turn on the power again.
3. Turn off all power-supply switches starting with the DS4300 storage subsystem
power supply switches first and then the power supply switches of the attached
storage expansion enclosures; then unplug the power cords from the storage
subsystem.
Restoring power after an emergency shutdown
Use the following procedure to restart the storage subsystem if you turned off the
power-supply switches during an emergency shutdown, or if a power failure or a
power outage occurred:
Chapter 4. Operating the storage subsystem
95
1. After the emergency situation is over or power is restored, check the storage
subsystem for damage. If there is no visible damage, continue with step 2;
otherwise, have your system serviced.
2. After you have checked for damage, ensure that the power-supply switches are
off; then plug in the storage-server power cords.
3. Complete step 2 on page 92 to determine the proper power-on sequence for
your system.
4. Complete steps 3 and 4 on page 93 to turn on power to the devices in your
system and to check the status of the storage subsystem.
Restoring power after an over-temperature shutdown
Use the following procedure to restart the storage subsystem after an unexpected
shutdown due to an over-temperature condition:
1. Make sure that the power-supply switches on the back of the storage
subsystem are turned off.
2. Do whatever is necessary to cool the unit (replace the fans, use external fans to
cool the room, and so on).
3. Check all components and cables for visible damage. Do not start the storage
subsystem if you find evidence of damage.
4. Complete step 2 on page 92 to determine the proper power-on sequence for
your system.
5. When the internal temperature of the storage subsystem is below 35°C (95°F),
complete steps 3 and 4 on page 93 to turn on power to the devices in your
system and to check the status of the storage subsystem.
Monitoring status through software
Use the storage-management software to monitor the status of the storage
subsystem. Run the software constantly, and check it frequently.
Notes:
1. You can only monitor storage subsystems that are within the management
domain of the storage-management software.
2. If you do not install the Event Monitor service as part of the
storage-management software installation, the Enterprise Management window
of the storage-management software must remain open. (If you close the
window, you will not receive any alert notifications from the managed storage
subsystems.)
For more information, see the Enterprise Management online Help.
The storage-management software provides the best way to diagnose and repair
storage-server failures. The software can help you do the following:
v Determine the nature of the failure
v Locate the failed component
v Determine the recovery procedures to repair the failure
Although the storage subsystem has fault LEDs, these lights do not necessarily
indicate which component has failed or needs to be replaced, or which type of
recovery procedure you must perform. In some cases (such as loss of redundancy
in various components), the fault LED does not turn on. Only the
storage-management software can detect the failure.
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For example, the recovery procedure for an IBM Predictive Failure Analysis® (PFA)
flag (impending drive failure) on a drive varies depending on the drive status (hot
spare, unassigned, RAID level, current logical drive status, and so on). Depending
on the circumstances, a PFA flag on a drive can indicate a high risk of data loss (if
the drive is in a RAID 0 volume) or a minimal risk (if the drive is unassigned). Only
the storage-management software can identify the risk level and provide the
necessary recovery procedures.
Note: For PFA flags, the General-system-error LED and Drive fault LEDs do not
turn on, so checking the LEDs will not notify you of the failure, even if the
risk of data loss is high.
Recovering from a storage-server failure might require you to perform procedures
other than replacing the component (such as backing up the logical drive or failing a
drive before removing it). The storage-management software gives these
procedures.
Attention:
Not following the software-recovery procedures can result in data loss.
Firmware updates
In order to ensure the optimal operation of the DS4300 storage subsystem and its
attached storage expansion enclosures, the storage expansion enclosure ESM
firmware, the DS4300 storage subsystem controller firmware, the hard drive
firmware, and the NVSRAM (for controllers only) must be up to date. Go to the
following Web site to get the latest updates:
http://www-1.ibm.com/servers/storage/support/disk/
Apply the necessary updates before configuring the DS4300 arrays and logical
drives. Subscribe to My Support for automatic notifications of firmware or storage
manager software updates or any important information about your DS4000
subsystems (see “Product updates” on page 1).
Attention: Read the Readme file that is included in each firmware or DS4000
Storage Manager software package for any limitations, subsystem firmware
prerequisites, or download-sequence information. For example, the controller
firmware code might require the storage expansion enclosure ESM firmware to be
upgraded first to a particular version, or the controller firmware download might
require the halting of I/Os to the DS4300 storage subsystem’s logical drives. Failure
to observe the limitations, prerequisites, and dependencies in the Readme file might
result in a loss of data access.
Checking the LEDs
The LEDs display the status of the storage subsystem and components. Green
LEDs indicate a normal operating status; amber LEDs indicate a possible failure.
It is important to check all the LEDs on the front and back of the storage subsystem
when you turn on the power. In addition to checking for faults, you can use the
LEDs on the front of the storage subsystem to determine if the drives are
responding to I/O transmissions from the host.
For information about the LEDs on the front of the storage subsystem, see the
following:
v Figure 73 on page 98
Chapter 4. Operating the storage subsystem
97
v Table 13
For information about the LEDs on the back of the storage subsystem, see the
following:
v Figure 75 on page 101
v Table 14 on page 99
v Table 15 on page 101
General-systemerror LED
Power-on LED
Locator LED
Drive activity LED
Drive fault LED
Figure 73. DS4300 storage subsystem LEDs (front)
Table 13. DS4300 storage subsystem LEDs (front)
LED
Color
Operating states1
Drive active
Green
v On - Normal operation
v Flashing - The drive is reading or writing data.
v Flashing every 5 seconds - The drive has not
spun up.
v Off - One of the following situations has occurred:
– The storage subsystem has no power.
– The drive is not properly seated in the storage
subsystem.
Drive fault
Amber
v Off - Normal operation
v Flashing - The storage management software is
locating a drive, logical drive, or storage
subsystem.
v On - The drive failed, or a user failed the drive.
Power
Green
v On - Normal operation
v Off - One of the following situations has occurred:
– The storage subsystem has no power.
– Both power supplies have failed.
– There is an overtemperature condition.
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Table 13. DS4300 storage subsystem LEDs (front) (continued)
LED
Color
Operating states1
General-systemerror
Amber
v Off - Normal operation
v On - A storage subsystem component failed.2
Note: When the power supply fails on the DS4300
model 6LU and 6LX storage subsystem, the
general-system-error LED (and the Power-on LED)
are not lit.
Locator
Blue
v On - When on, this blue light indicates the storage
management software is locating the server.
v Off - When off, the storage management software
is not actively searching for the server.
1
Always use the storage management software to identify the failure.
2
This LED could be turned on for fault conditions that are not caused by a subsystem
components failure such as logical drive not on preferred path or drive has errors exceeded
Predictive Failure limits. Always use the storage management software to identify the failure.
Expansion link indicator
2Gbps
Host 1
Expansion
Host 2
10101
10BT
2Gb/s
100BT
+
2Gb/s
Host 2
Host 1
indicator indicator
10BT
100BT
Battery
charging
Cache Controller
active
fault
Expansion
by-pass
Figure 74. DS4300 RAID controller LEDs
Table 14. DS4300 RAID controller LEDs
Icon
LED
Color
Operating states1
Fault
Amber
v Off - Normal operation
v On - The RAID controller failed.
Host loop
Green
v On - Normal operation
v Off - One of the following situations has
occurred:
– The host loop is down, not turned
on, or not connected.
– An SFP failed, or the host port is not
occupied.
– The RAID controller circuitry failed,
or the RAID controller has no power.
Chapter 4. Operating the storage subsystem
99
Table 14. DS4300 RAID controller LEDs (continued)
Icon
LED
Color
Operating states1
Cache
active
Green
v On - There is data in the RAID
controller cache.
v Off - One of the following situations has
occurred:
– There is no data in the cache.
– There are no cache options enabled
for this DS4300 subsystem.
– The cache memory failed, or the
battery failed.
+
Battery
Green
v On - Normal operation
v Flashing - The battery is recharging or
performing a self-test.
v Off - The battery or battery charger
failed.
Expansion
port bypass
Amber
v Off - Normal operation
v On - One of the following situations has
occurred:
– An SFP module is inserted in the
drive loop port and the fibre channel
cable is not attached to it.
– The fibre channel cable is not
attached to an expansion unit.
– The attached expansion unit is not
turned on.
– An SFP failed, a fibre channel cable
failed, or an SFP failed on the
attached expansion unit.
Note: There is no Expansion port bypass
LED on the DS4300 model 6LU and 6LX
storage subsystem.
No icon
Expansion
Loop Link
Green
2 Gbps
Green
v On - Normal operation
v Off - The RAID controller circuitry failed,
or the RAID controller has no power.
v On - Normal operation (host connection
is at 2 Gbps)
v Off - Host connection is at 1 Gbps
(which is not supported for controller
firmware 05.33.xx.xx).
No icon
10BT
No icon
100BT
Green
v If the Ethernet connection is
10BASE-T: The 10BT LED is on; the
100BT LED flashes faintly.
v If the Ethernet connection is
100BASE-T: The 10BT LED is off; the
100BT LED is on.
v If there is no Ethernet connection:
Both LEDs are off.
1
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Fan fault LED
Fan fault LED
Power LED
Power supply
fault LEDs
Power LED
Figure 75. DS4300 storage subsystem fan and power supply LEDs
Table 15. DS4300 storage subsystem fan LED
LED
Color
Operating states1
Fault
Amber
v Off - Normal operation
v On - The fan FRU failed.
1
Always use the storage management software to identify the failure.
Table 16. DS4300 storage subsystem power supply LEDs
LED
Color
Operating states1
Fault
Amber
v Off - Normal operation
v On - One of the following situations has occurred:
– The power supply failed.
– An overtemperature condition has occurred.
– The power supply is turned off.
Power
Green
v On - Normal operation
v Off - One of the following situations has occurred:
– The power supply is disconnected.
– The power supply is seated incorrectly.
– The storage subsystem has no power.
1
Always use the storage management software to identify the failure.
Cache memory and RAID controller battery
Each RAID controller contains memory for caching read and write data. It also
contains a rechargeable battery that maintains data in the cache in the event of a
power failure. The following sections describe these features and their associated
LEDs.
Cache memory
Cache memory is memory on the RAID controller that is used for intermediate
storage of read and write data. Using cache memory can increase system
performance. The data for a read operation from the host might be in the cache
memory from a previous operation (thus eliminating the need to access the drive
itself), and a write operation is completed when it is written to the cache, rather than
to the drives.
Chapter 4. Operating the storage subsystem
101
See the storage management software documentation for information on how to set
cache memory options.
The RAID controller has a Cache active LED that displays the current status of the
cache. The LED is on if data is in the cache, and it is off if no data is in the cache.
If caching is enabled and the Cache active LED never comes on during I/O activity,
it indicates that the cache memory failed or the battery failed. (The green Battery
LED will be off.)
Note: Always use the storage management software to check your cache memory
settings before you assume a hardware failure. On the DS4300
single-controller storage subsystem (model 6LU/6LX), the RAID controller
cache memory is used for storing read data only. The controller firmware
ignores a “write-cache enabled” setting. This protects data in the event of a
controller failure, which would cause the cache to be inaccessible.
Figure 76 shows the location of the Cache active LED on the RAID controller
modules which are located on the back of the DS4300 subsystem.
Cache
active
LED
Figure 76. DS4300 storage subsystem cache active LED
RAID controller cache battery
Each RAID controller contains a sealed, rechargeable 4-volt lead-acid battery. This
battery provides cache backup for up to three days in the event of a power loss.
The service life of the battery is three years, after which time the battery must be
replaced. See the storage management software for information on how to view and
set the battery expiration date.
Important: The replacement RAID controller CRU does not come with a RAID
controller cache battery installed, nor the mounting hardware that holds the battery
in place inside the RAID controller. You must remove the cache battery that is
inside the existing RAID controller that you are replacing, and install that battery
inside the replacement RAID controller CRU, using the battery unit mounting
hardware taken from the existing controller. On the DS4300 model 6LU/6LX, you
will have to stop all I/O to the storage subsystem before you replace the battery.
The steps to remove and replace the battery are included in Chapter 5, “Installing
and replacing components,” on page 105.
Each RAID controller has a green Battery LED on the back that indicates the
following battery statuses:
v The LED is on and remains steady when the battery is fully charged.
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v The LED flashes when the battery is charging or performing a self-test.
v The LED is off if the battery or the battery charger failed.
The battery performs a self-test at startup and every 25 hours thereafter (during
which time the Battery LED flashes). If necessary, the battery begins recharging at
that time. If the battery fails the self-test, the Battery LED turns off, indicating a
battery fault.
Data caching starts after the battery completes the startup tests.
Figure 77 shows the location of the Battery LED on the RAID controller modules
which are located on the back of the DS4300 subsystem.
Battery
LED
Figure 77. DS4300 storage subsystem battery LED
Chapter 4. Operating the storage subsystem
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Chapter 5. Installing and replacing components
This chapter provides instructions to help you install or remove customer
replaceable units (CRUs), such as hot-swap drives, fans, RAID controllers, and
power supplies.
For more field-replaceable unit (FRU) and Option part number information, see the
following Web site:
www.ibm.com/storage/techsup.htm
Handling static-sensitive devices
Attention: Static electricity can damage electronic devices and your system. To
avoid damage, keep static-sensitive devices in their static-protective packages until
you are ready to install them.
To reduce the possibility of electrostatic discharge, observe the following
precautions:
v Limit your movement. Movement can cause static electricity to build up around
you.
v Handle the device carefully, holding it by its edges or its frame.
v Do not touch solder joints, pins, or exposed printed circuitry.
v Do not leave the device where others can handle and possibly damage the
device.
v While the device is still in its static-protective package, touch it to an unpainted
metal part of the storage subsystem for at least two seconds. This drains static
electricity from the package and from your body.
v Remove the device from its package and install it directly into your storage
subsystem without setting it down. If it is necessary to set the device down, place
it in its static-protective package. Do not place the device on your storage
subsystem cover or any metal surface.
v Take additional care when handling devices during cold weather because heating
reduces indoor humidity and increases static electricity.
Upgrading your RAID controllers
This section describes the following upgrades:
v “Upgrading DS4300 Model 6LU/6LX to Model 60U/60X”
v “Upgrading the DS4300 Model 60U/60X from standard to Turbo option” on page
109
Upgrading DS4300 Model 6LU/6LX to Model 60U/60X
To upgrade from the DS4300 single-controller storage subsystem (Model 6LU/6LX)
to the DS4300 dual-controller storage subsystem (Model 60U/60X), you must
purchase one of the following upgrade kits:
v IBM DS4300 Model 6LU/6LX Upgrade, IBM part number 24P8963
v IBM DS4300 Model 6LU/6LX Turbo Upgrade, IBM part number 24P8964
See “IBM DS4300 Model 6LU/6LX” on page 2 for a description of the differences
between the two upgrade kits.
© Copyright IBM Corp. 2005, 2006
105
The upgrade kits contain two DS4300 controller CRUs, with cache memory battery
installed, and one power supply. You must purchase additional SFPs and fibre
channel cables separately to make fibre channel connections to the host ports on
the second DS4300 controller.
Use the following procedure for both upgrade kits.
Steps for upgrading from DS4300 Model 6LU/6LX to Model
60U/60X
Before you begin:
v Schedule downtime for the upgrade.
v If you purchase additional storage capacity at the same time as the controller
upgrade kit, do not connect the new drives or storage expansion enclosures to
the DS4300 controllers until you complete the following tasks:
– Finish the upgrade process
– Verify that the upgraded storage subsystem is in optimal state
v If you have premium features enabled in the existing DS4300 storage subsystem,
ensure that you have access to the premium features key files before you begin
the upgrade process. You will need to re-enable your premium features during
the process.
v Ensure that you have installed the latest version of DS4000 Storage Manager.
For more information, see the IBM DS4000 Storage Manager Installation and
Support Guide for your operating system, or see the following Web site:
www-1.ibm.com/servers/storage/support/disk/
v Use the Storage Manager Client to determine whether the system is in an
optimal state. If it is not, fix the problem to return the system to an optimal state
before you attempt the upgrade.
v After the new controllers complete the boot process, the WWNN of the DS4300
controllers will change. If you have any applications that rely on the previous
WWNNs, such as FC switch zoning definitions, you must update the applications
with the new WWNNs.
Complete the following steps to upgrade from DS4300 Model 6LU/6LX to Model
60U/60X, using either the standard or the Turbo option upgrade kit:
1. In the Storage Manager Client, open a management connection to the DS4300
that you are upgrading.
2. Save the storage subsystem profile to a disk location that is not in the DS4300
that you are upgrading. In the Subsystem Management window, select View
—> Storage Subsystem Profile. When the Storage Subsystem Profile
window opens, click Save As. The Save Profile window opens. Select an
appropriate directory and choose a file name for the profile, then click Save.
Click Close to close the Storage Subsystem Profile window.
3. Complete any necessary server preparation tasks, because the disks will not
be available during the upgrade process. For example, stop all programs,
services or processes in the host servers that access the logical drives.
Note: Make sure that you stop any background programs, services or
processes that write data to the logical drives. For example, Microsoft
MSCS periodically writes to the Quorum disk.
4. Stop I/O to the storage subsystem.
5. Unmount any mapped LUNs from the storage subsystem.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
6.
7.
8.
9.
10.
Note: In a Microsoft Windows® environment, remove the drive letter or the
mount points of the mapped LUNs instead of unmounting the file
systems.
If applicable, remove the controller WWNN from the fibre channel switch fabric
zone definitions or any applications that use this WWNN info.
Wait one minute, then turn off the DS4300 storage subsystem that you are
upgrading.
Label each cable that connects to the existing RAID controller CRU host ports
to ensure that all cables will be properly reconnected to the new RAID
controller CRU.
Attention: Handle and install fiber-optic cables properly to avoid degraded
performance or loss of communications with devices. When working with
fiber-optic cables, do not pinch them, step on them, or locate them in aisles or
walkways. Do not overtighten the cable straps or bend the cables to a radius
smaller than 38 mm (1.5 in.).
Remove the fibre-channel cables from the SFPs on the RAID controller CRU.
(After removing the fibre-channel cables, insert their protective caps.)
Remove the DS4300 single controller CRU, as follows:
a. Push down on the latch (centered above the RAID controller), then pull
both levers at the same time out of the locked position.
b. Grasp the pull-rings, then pull on the levers and remove the RAID
controller.
11. Unpack and insert the first upgrade DS4300 controller CRU into the left-hand
controller slot, which is marked “Controller A”, as follows:
a. Slide the RAID controller all the way into the empty slot.
b. Close both levers until the latch locks into place.
12. Remove the SFPs from host ports of the DS4300 single-controller CRU and
insert them into the host ports of the new DS4300 controller CRU, which you
installed in step 11. (Use the instructions in “Removing SFP modules” on page
35 and “Installing SFP modules” on page 33.)
13. Remove the controller CRU blank from the right-hand controller slot, which is
marked “Controller B.”
14. Insert the new RAID controller into the slot marked “Controller B.”.
15. Unpack the additional SFPs and insert them in the host ports of Controller B.
16. Remove the power supply blank from the right-hand power supply slot. Unpack
and insert the upgrade power supply CRU into the slot. (See “Installing a
hot-swap power supply” on page 133 for more information about installing
power supplies.)
17. Reconnect the fibre-channel cables to their original host port locations in
Controller A, using the instructions in Chapter 3, “Cabling the storage
subsystem,” on page 29. Using the new fibre-channel cables, make the
necessary fibre-channel connections to the host ports of controller B.
18. If DHCP/BootP was used to automatically set the IP address of the controller,
complete the following steps:
a. Record the MAC address of the upgrade controller
b. Modify the existing DHCP/BootP record of the RAID controller to be
upgraded with the new MAC address
Notes:
a. Failure to modify the DHCP/BootP record will result in problems trying to
manage the storage subsystem using the existing IP address.
Chapter 5. Installing and replacing components
107
b. You must complete this step before you insert the upgrade controller into
the DS4000 storage subsystem. For more information, see the instructions
the appropriate IBM DS4000 Storage Manager version 9.1x Installation and
Support Guide.
c. If you have created a DHCP/BootP record for controller A, you must add
one for controller B. Otherwise, you might not be able to manage controller
B using the Ethernet network.
19. Connect the power cord to the ac connector of the newly added power supply
CRU.
20. Plug the power cord into a properly grounded electrical outlet.
21. Turn on the power supply switches. Make sure that the green Power LED on
the new power supply CRU is on, and that the amber Fault LED is off.
v If the Power LED is off, the power-supply CRU might not be installed
correctly. Remove it, and then reinstall it.
v Ensure that the electrical outlet is hot.
v If the Fault LED is on, or if the Power LED stays off, contact your IBM
support representative.
Note: To maintain power redundancy on the DS4300 dual-controller storage
subsystem (Model 60U/60X), plug the right and the left power supplies
into two independent external power circuits through ac distribution units
(inside a rack cabinet or directly into external receptacles).
Similarly, plug the right and left power supplies of any attached DS4000
EXP storage expansion enclosures into the same two independent
external power circuits as the DS4300 storage subsystem. See
Figure 72 on page 86 for an example of redundant power cabling.
22. Wait a few minutes for the new controllers to complete the boot process.
23. If applicable, update the fibre channel switch fabric-zone definitions with the
newly generated controller World Wide Node Name (WWNN).
Note: If you have any other applications that rely on the previous DS4300
controller WWNN, then you must also update the applications with the
new WWNNs.
24. Using the Storage Manager client, open a management connection to the
DS4300 storage subsystem.
25. Verify that the storage subsystem does not have any errors (beside the battery
failed/charging error). If there are missing LUNs, configurations, failed
fibre-channel hard drives or fibre-channel hard drives that display the “need
attention” icon, contact your IBM support representative.
26. Set the enabled premium features back into an enabled and optimal state,
using the existing premium features key files for the RAID controller that you
removed from the original storage subsystem.
Note: Before you complete this step, the premium features might display as
enabled, but they will be “out of compliance.”
27. If this is the Turbo upgrade option, use the Storage Manager Client to verify
the firmware and NVSRAM. If the current versions are earlier than the versions
that are included on the Turbo Option CD, reload the firmware and NVSRAM
to the CD versions. Then, check the IBM Web site for any firmware or
NVSRAM updates.
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28. Enable full controller redundancy by making appropriate FC connections
between controller B’s host ports and the HBA ports in the servers that are
connected to controller A. You must also install the LUN failover driver in the
host server.
Note: If the failover driver is already installed, you might have to reconfigure
the failover settings, reboot the server, or both—depending upon which
failover driver you used. If you do not install or reconfigure the failover
driver, you will not have controller redundancy protection.
29. In the host server, reestablish the I/O connections to the mapped LUNs by
mounting the file systems or adding drive letter/mount points.
Note: You may have to reboot servers that use Microsoft Windows operating
systems to enable them to recognize the drives.
30. If this is the Turbo upgrade option, follow the Web activation instructions
provided in the upgrade kit to activate the Storage Partitioning Premium
Feature and register the ability to attach seven additional DS4000 EXP storage
expansion enclosures.
Upgrading the DS4300 Model 60U/60X from standard to Turbo option
If you have purchased the DS4300 Turbo option, you must replace your existing
256-MB memory controllers to 1-GB memory controllers shipped as part of the
option. You should perform this upgrade with the power on as a hot-swap. It is also
possible to perform this procedure as a cold-swap.
Note: A controller hot-swap replacement is when the controllers are replaced one
at a time while the storage subsystem is powered on. Care must be
exercised to ensure a successful upgrade. Hot-swap is the preferred method
for upgrading your controllers. A controller cold-swap replacement is when
both controllers are replaced at the same time after the storage subsystem is
powered off. Power is turned back on to the storage subsystem after the
controllers are replaced.
This section contains the following procedures:
v “Steps for hot-swap RAID controller upgrade”
v “Steps for cold-swap RAID controller upgrade” on page 115
Steps for hot-swap RAID controller upgrade
Important:
v You cannot hot-swap the RAID controller of a DS4300
single-controller storage subsystem (Model 6LU/6LX).
v You must install the latest version of Storage Manager client software
in the management workstation or in the host server connected to
the DS4300 that will be upgraded before you replace the old
controller with the new controller. For more information, see the IBM
DS4000 Storage Manager Installation and Support Guide for your
operating system, or the following Web site:
www-1.ibm.com/servers/storage/support/disk/
v This procedure must be done when the DS4300 system is at a low
I/O state. It is preferred that no I/Os are made to the DS4300 server
while the storage subsystem is being upgraded.
Chapter 5. Installing and replacing components
109
v The upgrade should be preformed when the system is in an optimal
state. If it is not, fix the problem before attempting the upgrade. Use
the Storage Manager client to determine if the system is in an
optimal state.
v You must have a management connection to the controller before
attempting the upgrade because you need to use the Storage
Manager client to set the controller to certain states before replacing
it, and to verify its operating condition status.
You need to use the Storage Manager client to properly set the
controller state by completing the following steps:
1. Disable controller caching.
2. Set the controller to offline state before replacing it.
3. Set the controller to online state after inserting the new controller.
4. Verify controller operating condition status after the new controller
is brought online.
v Save the configuration/profile before upgrading.
Each RAID controller fits into the back of the storage subsystem and has the
following components:
v Battery
v Cache memory
v Two host ports and one expansion port
v One Ethernet port
v One serial port
Each RAID controller has a unique hardware Ethernet address, which is printed on
a label on the front. There is also a label giving the cache battery manufacturing
and installation dates on the top of the controller unit. Figure 78 shows the location
of these items.
Ethernet address label
Battery-access panel (on bottom)
Levers
Figure 78. RAID controller levers and labels
For information about the RAID controller cache memory and rechargeable battery,
see “Cache memory and RAID controller battery” on page 101.
You must replace both controllers. Replace one controller at a time. To upgrade
your RAID controller, complete the following steps:
1. Open a management connection to the DS4300 using the Storage Manager
client.
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2. Save the storage subsystem profile to a disk location that is not in the DS4000
storage subsystem that you are upgrading. In the Subsystem Management
window, select View-->Storage Subsystem Profile. When the Storage
Subsystem Profile window opens, click Save As. The Save Profile window
opens. Select an appropriate directory and choose a file name for the profile,
then click Save.
Click Close to close the Storage Subsystem Profile window.
3. Use the Storage Manager client to flush and disable the read/write cache on
both controllers, using the following steps. Either check that the cache LED on
the back of the controller is off or wait two to three minutes.
a. In the Logical/Physical View of the Subsystem Management window,
right-click any of the logical drive tree nodes and select Change-->Cache
Settings. A Change Cache Settings window opens.
b. Click Select All to select all logical drives, and clear all of the Cache
Setting Enable check boxes, then click OK. Click OK when the
Confirmation window opens.
Note: A progress window shows the modification progress. After the cache
setting modification complete, click OK to close the progress
window and return to the Subsystem Management window.
Refer to the Storage Manager client online Help panels for more details on
disabling cache.
4. Place the controller in an offline state. In the Logical/Physical View of the
Subsystem Management window, right-click the controller icon and select
Place-->Offline. Click Yes when the Controller Offline Confirmation window
opens. Verify that the controller amber fault LED is lit. In the Storage Manager
client, the controller will be displayed with a red “X” icon.
5. Label each cable that connects to the RAID controllers. This ensures that all
cables will be properly reconnected to the new RAID controllers.
Attention: Handle and install fiber-optic cables properly to avoid degraded
performance or loss of communications with devices. When working with
fiber-optic cables, do not pinch them, step on them, or locate them in aisles or
walkways. Do not overtighten the cable straps or bend the cables to a radius
smaller than 38 mm (1.5 in.).
6. From the first RAID controller to be upgraded, remove the fibre-channel cables
from the SFPs. The location of these components is shown in Figure 79 on
page 112.
Chapter 5. Installing and replacing components
111
SFP module
Raid controller
Fiber-optic
cable
Figure 79. Location of SFPs and fiber-optic cables
After removing the fibre-channel cables, insert the protective caps.
7. Use the following procedure to remove the SFPs from the RAID controller to
be upgraded.
a. Remove the LC-LC fibre-channel cable from the SFP module. For more
information, see “Handling fiber-optic cables” on page 33.
b. Unlock the SFP module latch:
v For SFP modules that contain plastic tabs, unlock the SFP module latch
by pulling the plastic tab outward 10°, as shown in Figure 80.
Plastic tab
Protective cap
10 o
SFP module
Figure 80. Unlocking the SFP module latch - plastic variety
v For SFP modules that contain wire tabs, unlock the SFP module latch by
pulling the wire latch outward 90°, as shown in Figure 81 on page 113.
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Wire
tab
Protective
cap
o
90
SFP
module
Figure 81. Unlocking the SFP module latch - wire variety
c. With the SFP latch in the unlocked position, extract the SFP module.
v For SFP modules that contain plastic tabs, slide the SFP module out of
the port.
v For SFP modules that contain wire tabs, grasp the wire latch and pull
the SFP module out of the minihub port.
d. Replace the protective cap on the SFP module.
e. Place the SFP module into a static-protective package.
f. Replace the protective cap on the port.
8. Remove the RAID controller to be upgraded, as follows:
a. Push down on the latch (centered above the RAID controller). Pull both
levers at the same time out of the locked position.
b. Grasp the pull-rings (see Figure 82), then pull on the levers and remove
the RAID controller.
Figure 82. Pull-rings for removing a controller
9. Unpack the new RAID controller with the 1-GB memory. Verify that the battery
is in the controller by opening the DS4300 controller CRU, using step 6
through step 9 of “Replacing the battery in the RAID controller” on page 140.
If there is no battery in the new DS4300 controller, remove the battery from the
old controller and install it in the new controller.
Chapter 5. Installing and replacing components
113
Set the RAID controller on a dry, level surface away from magnetic fields.
Save the packing material and documentation in case you need to return the
RAID controller.
10. If DHCP/BootP was used to automatically set the IP address of the controller,
record the MAC address of the upgrade controller and modify the existing
DHCP/BootP record of the RAID controller to be upgraded with the new MAC
address. Failure to modify the DHCP/BootP record will result in problems trying
to manage the storage subsystem using the existing IP address. This step
must be performed before you insert the upgrade controller into the DS4000
storage subsystem.
11. Install the new RAID controller, as follows:
a. Slide the RAID controller all the way into the empty slot.
b. Close both levers until the latch locks into place.
Attention: When you replace the old RAID controller, the
storage-management software automatically synchronizes the firmware
between the existing controller and the new controller. After you replace a
controller, always use the storage-management software to verify the firmware
levels and nonvolatile storage random access memory (NVSRAM) files.
12. Insert the SFPs according to the instructions in “Installing SFP modules” on
page 33.
13. Connect the fibre-channel cables to their original locations, according to the
instructions in Chapter 3, “Cabling the storage subsystem,” on page 29.
14. Wait approximately one minute, and then check the green Host Loop LED,
green Expansion Loop LED, and amber Fault LED on the new RAID controller.
Note: If the Expansion Loop LED is off, the RAID controller might not be
inserted correctly. Remove the RAID controller and reinsert it.
15. Bring the controller online by completing the following steps:
a. In the Physical View of the Subsystem Management window, right-click the
controller icon and select Place-->Online.
b. Click Yes when the Controller Online Confirmation window opens.
16. Check that the controller is online. Use either of the two following methods:
v Use the Storage Manager client to verify that the controller is online (up)
and running by selecting the menu option to display the properties of the
controller that has just been replaced. If the controller is not up, you will get
a controller-connection error window instead of the Controller Properties
window. Wait a minute and retry until you get the properties window.
v Check the LEDs at the back of the controller. All Fault LEDs should be off
and the Host Loop and Expansion Loop LEDs should be on.
17. If the Fault LED is on, the Host Loop LED and the Expansion Loop LED stay
off, or any other Fault LED is on, see the Storage Manager client for problem
determination.
Note: The battery LED may be flashing indicated battery charging is in
progress.
18. Repeat step 4 through step 17 for the second controller. However, do not
continue with this step if the new controller is not in online and optimal state
due to reasons other than battery charging and controller cache memory not
matching.
19. Enable controller caching by completing the following steps:
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a. In the Logical/Physical View of the Subsystem Management window,
right-click any of the logical drive tree node and select Change-->Cache
Settings. A Change Cache Settings window opens.
b. Click Select All to select all of the logical drives. Select the appropriate
check boxes to enable the read/write caching options that you want, then
click OK.
c. Click OK when the confirmation window opens.
Note: A progress window shows the modification progress. After the cache
setting modification completes, click OK to close the window and
return to the Subsystem Management window.
20. Verify firmware and NVSRAM. Reload the firmware and NVSRAM to the
version shipped on the Turbo option CD. Then, check the IBM Web site for any
firmware updates.
Steps for cold-swap RAID controller upgrade
Important:
v You must install the latest version of Storage Manager client software
in the management workstation or in the host server connected to
the DS4300 that will be upgraded before you replace the old
controller with the new controller. For more information, see IBM
DS4000 Storage Manager Installation and Support Guide for your
operating system, or the following Web site:
www-1.ibm.com/servers/storage/support/disk/
v Schedule downtime for the upgrade.
v The upgrade should be performed when the system is in an optimal
state. If it is not, fix the problem before attempting the upgrade. Use
the Storage Manager client to determine if the system is in an
optimal state.
v Save the configuration/profile before upgrading.
v If you have premium features enabled in the existing DS4300
storage subsystem, ensure that you have access to the premium
features key files before you begin this procedure. You will need to
re-enable your premium features during the procedure.
v After the new controllers complete the boot process, the WWNN of
the DS4300 controllers will change. If you have any applications that
rely on the previous WWNNs, such as FC switch zoning definitions,
you must update the applications with the new WWNNs.
Each RAID controller fits into the back of the storage subsystem and has the
following components:
v Battery
v
v
v
v
Cache memory
Two host ports and one expansion port
One Ethernet port
One serial port
Each RAID controller has a unique hardware Ethernet address, which is printed on
a label on the front. There is also a label giving the cache battery manufacturing
Chapter 5. Installing and replacing components
115
and installation dates on the top of the controller unit. Figure 83 shows the location
of these items.
Ethernet address label
Battery-access panel (on bottom)
Levers
Figure 83. RAID controller levers and labels
For information about the RAID controller cache memory and rechargeable battery,
see “Cache memory and RAID controller battery” on page 101.
Replace both controllers at the same time. To upgrade your RAID controllers,
complete the following steps.
Before you begin: Schedule the upgrade to take place at a convenient time,
because the storage subsystem will be powered down during the upgrade process.
1. Open a management connection to the DS4300 using the Storage Manager
client.
2. Save the storage subsystem profile to a disk location that is not in the DS4000
storage subsystem that you are upgrading. In the Subsystem Management
window, select View-->Storage Subsystem Profile. When the Storage
Subsystem Profile window opens, click Save As. The Save Profile window
opens. Select an appropriate directory and choose a file name for the profile,
then click Save.
Click Close to close the Storage Subsystem Profile window.
3. Complete any necessary server preparation tasks, because the disks will not
be available during the upgrade process. For example, stop all programs,
services or processes in the host servers that access the logical drives.
Note: Make sure that you stop any background programs, services or
processes that write data to the logical drives. For example, Microsoft
MSCS periodically writes to the Quorum disk.
4. Use the Storage Manager client to flush and disable the read/write cache on
both controllers, using the following steps. Either check that the cache LED on
the back of the controller is off or wait two to three minutes.
a. In the Logical/Physical View of the Subsystem Management window,
right-click any of the logical drive tree nodes and select Change-->Cache
Settings. A Change Cache Settings window opens.
b. Click Select All to select all logical drives, and deselect all of the Cache
Setting Enable check boxes, then click OK. Click OK when the
Confirmation window opens.
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Note: A progress window shows the modification progress. After the cache
setting modification complete, click OK to close the progress
window and return to the Subsystem Management window.
Refer to the Storage Manager client online Help panels for more details on
disabling cache.
5. Stop I/O to the storage subsystem.
6. Unmount any mapped LUNs from the storage subsystem.
7. Turn off the DS4300 storage subsystem.
8. Label each cable that connects to the RAID controllers. This ensures that all
cables will be properly reconnected to the new RAID controllers.
Attention: Handle and install fiber-optic cables properly to avoid degraded
performance or loss of communications with devices. When working with
fiber-optic cables, do not pinch them, step on them, or locate them in aisles or
walkways. Do not overtighten the cable straps or bend the cables to a radius
smaller than 38 mm (1.5 in.).
9. From both RAID controllers to be upgraded, remove the fibre-channel cables
from the SFPs. The location of these components is shown in Figure 84.
SFP module
Raid controller
Fiber-optic
cable
Figure 84. Location of SFPs and fiber-optic cables
After removing the fibre-channel cables, insert the protective caps.
10. Use the following procedure to remove the SFPs from the RAID controllers to
be upgraded:
a. Remove the LC-LC fibre-channel cable from the SFP module. For more
information, see “Handling fiber-optic cables” on page 33.
b. Unlock the SFP module latch:
v For SFP modules that contain plastic tabs, unlock the SFP module latch
by pulling the plastic tab outward 10°, as shown in Figure 85 on page
118.
Chapter 5. Installing and replacing components
117
Plastic tab
Protective cap
10 o
SFP module
Figure 85. Unlocking the SFP module latch - plastic variety
v For SFP modules that contain wire tabs, unlock the SFP module latch by
pulling the wire latch outward 90°, as shown in Figure 86.
Wire
tab
Protective
cap
o
90
SFP
module
Figure 86. Unlocking the SFP module latch - wire variety
c. With the SFP latch in the unlocked position, extract the SFP module.
v For SFP modules that contain plastic tabs, slide the SFP module out of
the port.
v For SFP modules that contain wire tabs, grasp the wire latch and pull
the SFP module out of the minihub port.
d. Replace the protective cap on the SFP module.
e. Place the SFP module into a static-protective package.
f. Replace the protective cap on the port.
11. Remove each RAID controller to be upgraded, as follows:
a. Push down on the latch (centered above the RAID controller). Pull both
levers at the same time out of the locked position.
b. Grasp the pull-rings (see Figure 87 on page 119), then pull on the levers
and remove the RAID controller.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Figure 87. Pull-rings for removing a controller
12. Unpack the new RAID controller with the 1-GB cache. Verify that the battery is
in the controller by opening the DS4300 controller CRU, using step 6 through
step 9 of “Replacing the battery in the RAID controller” on page 140. If there is
no battery in the new DS4300 controller, remove the battery from the old
controller and install it in the new controller.
Set the RAID controllers on a dry, level surface away from magnetic fields.
Save the packing material and documentation in case you need to return the
RAID controllers.
13. If DHCP/BootP was used to automatically set the IP address of the controller,
record the MAC address of the upgrade controller and modify the existing
DHCP/BootP record of the RAID controller to be upgraded with the new MAC
address. Failure to modify the DHCP/BootP record will result in problems trying
to manage the storage subsystem using the existing IP address. This step
must be performed before you insert the upgrade controller into the DS4000
storage subsystem.
14. Install each of the new RAID controllers, as follows:
a. Slide the RAID controller all the way into the empty slot.
b. Close both levers until the latch locks into place.
15. Insert the SFPs according to the instructions in “Installing SFP modules” on
page 33.
16. Connect the fibre-channel cables to their original locations on both of the
upgraded controllers, according to the instructions in Chapter 3, “Cabling the
storage subsystem,” on page 29.
17. Turn on the DS4300 storage subsystem.
18. Wait approximately one minute, and then check the green Host Loop LED,
green Expansion Loop LED, and amber Fault LED on the new RAID
controllers.
Note: If the Host Loop LED or the Expansion Loop LED is off, the RAID
controller might not be inserted correctly. Remove the RAID controller
and reinsert it.
19. Check that the controller is online. Use either of the two following methods:
v Use the Storage Manager client to verify that the controllers are online (up)
and running by selecting the menu option to display the properties of the
Chapter 5. Installing and replacing components
119
controllers that have just been replaced. If the controllers are not up, you
will get a controller-connection error window instead of the controller
properties window. Wait a minute and retry until you get the properties
window.
v Check the LEDs at the back of each controller. All Fault LEDs should be off
and the Host Loop and Expansion Loop LEDs should be on.
20. If the Fault LED is on, the Host Loop LED and the Expansion Loop LED stay
off, or any other Fault LED is on, see the Storage Manager client for problem
determination.
Note: The battery LED may be flashing indicated battery charging is in
progress.
21. After the controllers finish rebooting, their WWNNs will change. If you have
applications that rely on the previous DS4300 controller WWNNs (such as fibre
channel switch zoning definitions) you must update the applications with the
new WWNNs.
22. Enable caching on both controllers.
23. Verify firmware and NVSRAM. Reload the firmware and NVSRAM to the
version shipped on the Turbo option CD. Then, check the IBM Web site for any
firmware updates.
24. If applicable, re-enable your premium features using the premium features key
files of the controllers that you replaced.
Working with hot-swap drives
This section explains how you can increase the storage-server capacity by adding
more drives or replacing existing drives with ones containing a larger capacity.
Figure 88 shows the location of the hot-swap drive bays that are accessible from
the front of the storage subsystem. To maintain proper cooling within the storage
subsystem, always keep a filler panel in each drive bay that does not contain a
drive CRU.
Attention: The disk drive modules for the DS4300 storage subsystem and/or
EXP700 and EXP710 storage expansion enclosures are not the same as the SATA
disk drive modules for the EXP100 nor the FC or SATA enhanced disk drives
modules for the EXP810. The DS4300/EXP700/EXP710, EXP100 and EXP810 use
different non-interchangeable drive options and CRUs. Please order the correct
options/CRUs for the enclosures in your configuration. Force-fitting insertion of the
incorrect disk drive modules may cause damage to the drive CRUs or the enclosure
chassis slots /backplane. IBM does not sell or provide replacement parts to change
the drive CRU form factors.
|
|
|
|
|
|
|
|
|
Hot-swap
drive CRU
Figure 88. Location of hot-swap drives
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Attention:
1. Never hot-swap a drive CRU when its green Activity LED is flashing. Hot-swap
a drive CRU only when its amber Fault LED is completely on and not flashing or
when the drive is inactive with the green Activity LED on and not flashing.
2. After you remove a drive CRU, wait 70 seconds before replacing or reseating
the drive CRU to allow the drive to properly spin down. Failure to do so may
cause undesired events.
Before you install or remove drive CRUs, review the following information:
Filler panels
Storage subsystems without a full set of drives (14) contain filler panels in
the unused drive bays. Before installing new drives, you must remove the
filler panels. Save the filler panels for future use. Each of the 14 bays must
always contain either a filler panel or a drive CRU.
Drive CRUs
The RAID controller supports up to 14 (half-high or slim) 40-pin
fibre-channel hard disk drives. These drives come preinstalled in drive trays.
This drive-and-tray assembly is called a drive CRU. You can install the drive
CRUs in the 14 drive bays on the front of the storage subsystem.
Drive LEDs
Each drive CRU has two LEDs, which indicate the status for that particular
drive. For information about the drive LED operating states and
descriptions, see Figure 73 on page 98 and Table 13 on page 98.
Fibre-channel loop IDs
When you install a drive CRU in the storage subsystem, the drive CRU
connects into a printed circuit board called the midplane. The midplane
automatically sets the fibre-channel loop ID to the default value 00.
Hot-swap hardware
The storage subsystem contains hardware that you can use to replace a
failed hard disk drive without turning off the storage subsystem. Therefore,
you can continue operating the system while a hard disk drive is removed
or installed. These drives are known as hot-swap drives.
Slim drives
You can install slim, hot-swap drive CRUs.
Installing hot-swap drives
Before you begin: Take the following precautions.
v Read the safety and handling guidelines that are provided in “Safety” on page iii
and “Handling static-sensitive devices” on page 105.
v Ensure that the current system configuration is working properly.
v Back up all important data before you make changes to storage devices, such as
hard disk drives.
Use the following procedure to install hot-swap drives in the storage subsystem.
You can install additional drives while the storage subsystem is powered up and
running.
Note: If you are replacing a drive, see “Replacing hot-swap drives” on page 123.
1. Read the instructions that come with the drive CRU.
2. Check for Fault LEDs. If any amber LEDs are lit, see “Checking the LEDs” on
page 97 and “Troubleshooting” on page 145.
Chapter 5. Installing and replacing components
121
3. Determine the bay into which you want to install the drive.
4. Install the drive CRU:
Note: The hard disk drive comes with a tray already attached. Do not attempt
to detach the drive 4 from the tray 3. See Figure 89.
Figure 89. Releasing the drive latch
a. Release the blue latch 1 on the drive CRU by pressing on the inside of
the bottom of the tray handle. See Figure 89.
b. Pull the handle 2 on the tray out into the open position.
c. Slide the drive CRU into the empty bay until the tray handle 2 touches the
storage-server bezel.
d. Push the tray handle 2 down into the closed (latched) position.
5. Check the drive LEDs.
a. When a drive is ready for use, the green Activity LED is either continuously
on or rapidly flashing, and the amber Drive fault LED is off.
b. If the amber Drive fault LED is completely on and not flashing, remove the
drive from the unit and wait 10 seconds; then reinstall the drive.
6. Use the Storage Manager client to configure the drive.
7. Update the information in Appendix A, “Records,” on page 155.
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Replacing hot-swap drives
Drive problems include any malfunctions that delay, interrupt, or prevent successful
I/O activity between the hosts and the hard disk drives. This includes transmission
problems between the host controllers, the RAID controllers, and the drives. This
section explains how to replace a failed drive.
Notes:
1. Failure to replace the drives in their correct bays might result in loss of data. If
you are replacing a drive that is part of a RAID level 1 or RAID level 5 logical
drive, ensure that you install the replacement drive in the correct bay.
2. After you remove a drive CRU, wait 70 seconds before replacing or reseating
the drive CRU to allow the drive to properly spin down. Failure to do so may
cause undesired events.
Use the following procedure to replace hot-swap drives:
1. Check the hardware and software documentation that is provided with the
system to see if there are restrictions regarding hard disk drive configurations.
Some system fibre-channel configurations might not allow mixing different drive
capacities or types within an array.
2. Check the Storage Manager client online help for recovery procedures for a
drive that has failed. Follow the steps in the software procedure before you
continue with this procedure.
3. Determine the location of the drive that you want to remove.
Attention: Never hot-swap a drive CRU when its green Activity LED is
flashing. Hot-swap a drive CRU only when its amber Drive fault LED is on and
not flashing or when the drive is inactive with the green Activity LED on and not
flashing.
If the drive is not in a failed state (as indicated by a lit amber LED), manually
fail the drive using the Storage Management client before attempting to remove
it from the drive slot.
4. Remove the drive CRU.
a. Press on the inside of the bottom of the tray handle to release the blue latch
1. See Figure 90 on page 124.
b. Pull the handle 2 on the tray 3 out into the open position.
c. Lift the drive CRU partially out of the bay.
d. To avoid possible damage to the drive 4, wait at least 20 seconds before
you fully remove the drive CRU from the storage subsystem to allow for the
drive to spin down.
Chapter 5. Installing and replacing components
123
Figure 90. Drive latch on a hot-swap drive
e. Verify that there is proper identification (such as a label) on the drive CRU,
and then slide it completely out of the storage subsystem.
5. Install the new drive CRU.
Attention: After you remove a drive CRU, wait 70 seconds before replacing or
reseating the drive CRU to allow the drive to properly spin down. Failure to do
so may cause undesired events.
a. Gently push the drive CRU into the empty bay until the tray handle 2
touches the storage-server bezel.
b. Push the tray handle 2 down into the closed (latched) position.
6. Check the drive LEDs.
a. When a drive is ready for use, the green Activity LED is either on
continuously or rapidly flashing, and the amber Drive fault LED is off.
b. If the amber Drive fault LED is on and not flashing, remove the drive from
the unit and wait 10 seconds; then reinstall the drive.
7. If the drive is part of a defined RAID array, the array reconstruction (without
hot-spare) or copy-back (with hot-spare) operation automatically starts.
Upgrading drives
You can upgrade drives in the following two ways:
v By adding drives to empty slots in the storage subsystem (see “Installing
hot-swap drives” on page 121)
v By replacing existing drives with larger capacity drives
Adding larger-capacity drives
This section provides guidelines for upgrading the drives in the storage subsystem.
Read the software documentation and this entire section to determine if you should
use this procedure, use a modified version of this procedure, or use a different
procedure that is provided by your operating system. Instructions that are provided
with your software should supersede anything stated in this document.
There are two methods for upgrading drives:
v Replacing all the drives at the same time
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This method requires that you back up the data on the affected drives and then
turn off the storage subsystem. After replacing all the drives, you must
reconfigure the new drives and restore data from backup. See the procedure in
“Replacing all drives at the same time.”
This is the safest way to exchange drives without losing data. However, this
method might take a long time to complete because of the backup,
reconfiguration, and restoration processes. In addition, other users are not able
to use the storage subsystem (or any storage expansion enclosures attached to
the storage subsystem) until you finish the procedure. You must use this method
on RAID 0 logical drives.
v Replacing the drives one at a time
In this method, you manually fail each drive, replace it, and wait for the system to
restore data to the new drive before installing the next drive. After you install the
new drives, you can configure them to make the additional drive space available.
See the procedure in “Replacing the drives one at a time” on page 127.
Using this method, you can replace the drives while the storage subsystem is
running, eliminating the down time that is required if you replace all the drives at
once. However, this method is more risky because you can lose data if the drive
restoration or storage subsystem reconfiguration process fails. In addition, the
reconstruction process might take a long time. This method works only on
redundant logical drives (RAID 1, 3, or 5). You cannot use this method with any
drives containing RAID 0 logical drives.
Consider backing up your data if you use this method. This safeguards your data
if the restoration and reconfiguration process fails or the new drive malfunctions.
The method you use depends on the following considerations:
v Which method most closely matches the recommended drive upgrade procedure
that is provided in the operating system or the storage-management software
documentation.
v Which RAID level is used on the affected drives. (RAID 0 requires you to replace
all the drives at the same time.)
v How much downtime is acceptable as you swap the drives.
v The number of drives in an array. Replacing drives one at a time is better suited
for arrays consisting of 3 to 5 fibre channel drives. If you have more than 10
drives or SATA drives with a large capacity of 400G or 500G, consider replacing
all drives at the same time, as described in the next section.
Replacing all drives at the same time
Use this procedure to replace all drives at the same time. You must use this method
if you are upgrading drives containing RAID 0 logical drives. All the data currently
on the drives is lost when you replace the drives; therefore, you must back up all
data that is currently on the drives. This procedure also requires you to turn off the
storage subsystem, which makes the storage subsystem (and any attached storage
expansion enclosures) inaccessible to other users.
To replace all the drives at the same time, perform the following steps:
1. Read the following information:
v The information in “Adding larger-capacity drives” on page 124, particularly
the paragraphs that discuss the differences between the two possible
upgrade procedures
v The information in your software documentation regarding drive upgrades
and installation
Chapter 5. Installing and replacing components
125
v The documentation that comes with the new drives
Read all precautionary notes, kit instructions, and other information. Kit
instructions often contain the most current information regarding the drives
and their installation, plus upgrade or servicing procedures. Compare the kit
instructions with this procedure to determine if you need to modify this
procedure.
2. Use the Storage Manager client to check the status of the storage subsystem.
Correct any problems that are reported.
3. Perform a complete backup of the drives that you are replacing.
You need the backup to restore data on the drives later in this procedure.
Attention: When you handle static-sensitive devices, take precautions to
avoid damage from static electricity. For details about handling static-sensitive
devices, see “Handling static-sensitive devices” on page 105.
4. Unpack the new drives.
Set the drives on a dry, level surface away from magnetic fields. Save the
packing material and documentation in case you need to return the drives.
5. Perform the following steps:
a. Stop all I/O activity to the storage subsystem and attached storage
expansion enclosures. Make sure of the following:
1) All of the green Drive activity LEDs on the front of the storage
subsystem (and on all attached storage expansion enclosures) are not
flashing.
2) The green Cache active LEDs are off on the front of the RAID
controllers.
b. If applicable, use the operating system software to disconnect the storage
subsystem logical drives from the host before you power off the storage
subsystem.
Attention: To turn off all power to the storage subsystem, you must turn off
both power-supply switches and disconnect both power cords. Use the
procedure in step 6 for the proper shutdown sequence.
6. Turn off the power to each device based on the following shutdown sequence:
a. Turn off power to the host before you turn off power to the storage
subsystem. If the host must stay powered on to support an existing
network, see the operating system documentation for information about
disconnecting the storage subsystem logical drives from the host before
the storage subsystem is powered off.
b. Turn off power to the storage subsystem before you turn off power to the
storage expansion enclosures. Turn off both power supply switches on the
back of the storage subsystem.
c. Turn off power to other supporting devices (for example, management
stations, fibre-channel switches, or Ethernet switches).
Notes:
1) You do not need to perform this step if you are servicing only the
storage subsystem.
2) Depending on your operating system, you might not have to restart the
host. For more information, see the software installation guide for your
operating system.
7. Use the procedures in “Replacing hot-swap drives” on page 123 to remove the
drives that you want to replace. Use the procedures in “Installing hot-swap
drives” on page 121 to install the new drives into the storage subsystem.
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8. After you install all the new drives, check the system documentation for the
hardware devices that you intend to power up, and then determine the proper
startup sequence. Use the following power-on sequence, where applicable:
a. Turn on the power to the supporting devices (for example, Ethernet
switches and management stations) before you turn off power to the
storage subsystem.
b. You must turn on the storage expansion enclosures before the storage
subsystem. The controllers might not recognize the correct configuration if
the drives are powered up after the storage subsystem. For instructions on
powering up the storage expansion enclosures, see the storage expansion
enclosure documentation.
c. Turn on the power to the storage subsystem; then restart or turn on the
power to the host.
9. Turn on the power to each device, based on the power-on sequence in step 8.
To turn on power to the storage subsystem, turn on the power-supply switches
on the back of the storage subsystem. You must turn on both power-supply
switches to take advantage of the redundant power supplies.
10. Check the green Drive activity LED and the amber Drive fault LED below the
new drive CRUs.
Make sure that the Drive activity LEDs are on and the Drive fault LEDs are off.
Note: The Drive fault LEDs might flash intermittently while the drives spin up.
v If the Drive activity LED is off, the drive CRU might not be installed correctly.
Remove the drive CRU, wait 70 seconds, and then reinstall it.
v If the Drive fault LED stays on or the Drive activity LED stays off, the new
drive might be faulty. See the Storage Manager client for problem
determination.
11. Use the Storage Manager client to configure the new drives. See the Storage
Manager client online Help for detailed instructions.
12. Restore the data from backup to all the drives.
Replacing the drives one at a time
Use this procedure to replace all the drives one at a time. You cannot use this
procedure on RAID 0 logical drives. (Use the procedure in “Replacing all drives at
the same time” on page 125.)
Note: If your storage subsystem has hot spares assigned, you might want to
unassign the hot spares while you perform this procedure. If you do not,
reconstruction might start on the hot spare before you insert the new drive.
The data on the new drive is still rebuilt, but the process takes longer for
each drive. Remember to reassign the hot spares when you are finished with
this procedure.
To replace the drives one at a time, perform the following steps:
1. Read the following information:
v “Adding larger-capacity drives” on page 124, particularly the paragraphs that
discuss the differences between the two possible upgrade procedures
v Your software documentation regarding drive upgrades and installation
v The documentation that comes with the new drives
Read all precautionary notes, kit instructions, and other information. Kit
instructions often contain the most current information regarding the drives
Chapter 5. Installing and replacing components
127
2.
3.
4.
5.
and their installation, plus upgrade or servicing procedures. Compare the kit
instructions with this procedure to determine if you need to modify this
procedure.
Use the Storage Manager client to check the status of the unit. Correct any
problems that are reported.
Back up the data on the drives that you are replacing.
Attention: When you handle static-sensitive devices, take precautions to
avoid damage from static electricity. For details about handling static-sensitive
devices, see “Handling static-sensitive devices” on page 105.
Unpack the new drives.
Set the drives on a dry, level surface away from magnetic fields. Save the
packing material and documentation in case you need to return the drives.
Use the Storage Manager client to ensure that the array that was defined
using these drives is in optimal (not degraded) state before manually failing the
first drive you want to replace. If the array is in degraded state, use the
recovery procedures to bring the array into the optimal state.
Make sure of the following:
v You fail only one drive.
v The software status display shows a failed status for the appropriate drive.
v The amber Drive fault LED (on the front bezel below the drive) is on.
Attention: Removing the wrong drive can cause data loss. Make sure that
you remove only the failed drive CRU. The Drive fault LED below the failed
drive CRU should be on.
If you remove an active drive accidentally, wait at least 70 seconds and then
reinstall it. Because you failed two drives in a RAID array, the array might be
marked failed by the controller. This array will not be available to the host for
I/O. See the Storage Manager client online Help for further recovery
instructions. Do not attempt to replace any drives until the array is brought
back to optimal state.
After you remove a drive CRU, wait 70 seconds before replacing or reseating
the drive CRU to allow the drive to properly spin down. Failure to do so may
cause undesired events.
6. Use the procedures in “Replacing hot-swap drives” on page 123 to remove the
failed drive. Use the procedures in “Installing hot-swap drives” on page 121 to
install the new drives into the storage subsystem.
The new drive automatically reconstructs the data after you install it in the
drive slot.
During data reconstruction, the amber Drive fault LED might come on for a few
minutes, then turn off when the green Drive activity LED begins flashing. A
flashing Drive activity LED indicates that data reconstruction is in progress.
Note: If your storage subsystem has active hot spares, data might not start
copying to the new drive until the data is reconstructed on the hot
spare. This increases the time that is required to complete the
procedure.
7. Check the green Drive activity LED and the amber Drive fault LED below the
new drive CRUs.
Make sure that the Drive activity LEDs are on and the Drive fault LEDs are off.
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Note: The Drive fault LEDs might flash intermittently while the drives spin up.
v If the Drive activity LED is off, the drive CRU might not be installed correctly.
Remove the drive CRU, wait 30 seconds, and then reinstall it.
v If the Drive fault LED stays on or the Drive activity LED stays off, the new
drive might be faulty. See the Storage Manager client for problem
determination.
8. Use the Storage Manager client to monitor the status of the new drive and the
progress of the data reconstruction. Wait for data reconstruction to finish. (The
Drive activity LED stops flashing.)
Note: The Drive activity LED will continue to flash after reconstruction is
finished if there is I/O activity to that drive. In that case, use the host
software to determine if the data reconstruction is finished.
9. When reconstruction is finished on the new drive, repeat step 5 on page 128
through step 8 for each additional drive that you want to install.
10. Use the Storage Manager client to configure the additional space on the new
drives.
Working with hot-swap cooling fans
The storage subsystem cooling system consists of two fan CRUs, each containing
two fans. The fan CRUs circulate air inside the unit by pulling in air through the
vents on the front of the drive CRUs and pushing out air through the vents in the
back of each fan CRU. See Figure 91.
If two fans fail, or the fans cannot maintain an internal temperature below 70°C
(158°F), the power supplies in the unit will automatically shut down (an
over-temperature condition). If this occurs, you must cool the unit and restart it. See
“Restoring power after an over-temperature shutdown” on page 96.
Attention: The fans in the storage subsystem draw in fresh air and force out hot
air. These fans are hot-swappable and redundant; however, when one fan fails, you
must replace the fan CRU within 48 hours to maintain redundancy and optimum
cooling. When you replace the failed fan CRU, be sure to install the second fan
CRU within 10 minutes to prevent any overheating due to the lack of the additional
fan CRU.
Fan CRU
Fault LED
Latch Handle
Latch
Handle
Fault LED
Fan CRU
Figure 91. Fan locations
Fan CRUs
The two fan CRUs are hot-swappable and redundant.
Chapter 5. Installing and replacing components
129
Fault LEDs
These amber LEDs light when a fan failure occurs.
Latches and handles
Use the latches and handles to remove or install the fan CRUs.
Attention: Do not run the storage subsystem without adequate ventilation and
cooling, because it might cause damage to the internal components and circuitry.
Both fan units must always be in place, even if one is not functioning properly, to
maintain proper cooling.
Use the following procedure to replace a hot-swap fan:
1. Check the LEDs on the back of the storage subsystem.
2. If the amber Fault LED is on, remove the fan CRU that has failed by completing
the following steps:
a. Slide the latch to unlock the fan CRU.
b. Use the handle (black knob) to pull the fan from the storage subsystem. See
Figure 92.
Figure 92. Removing a fan
3. Install the new fan unit by completing the following steps:
a. Place the fan CRU in front of the fan slot.
b. Hold the latch open, and slide the fan all the way into the slot. If the fan
does not go into the bay, rotate it 180°. Ensure that the latch is on the side
closest to the center of the storage subsystem.
c. Release the latch. If the lever remains open, pull back on the fan slightly,
and then push it in again until the latch snaps into place.
4. Check the LEDs.
The Fault LEDs turn off after a few seconds. If they remain on, see
“Troubleshooting” on page 145.
Working with hot-swap power supplies (dual-controller models only)
The storage subsystem power system consists of two power supply CRUs.
Exception: The DS4300 single-controller storage subsystem (Model 6LU/6LX) has
only one power supply CRU. Therefore, you cannot hot swap the power supply.
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The power supply CRUs provide power to the internal components by converting
incoming ac voltage to dc voltage. One power supply CRU can maintain electrical
power to the unit if the other power supply is turned off or malfunctions. The power
supply CRUs are interchangeable (by reversing the locking levers).
Each power supply CRU has a built-in sensor that detects the following conditions:
v Over-voltage
v Over-current
v Overheated power supply
If any of these conditions occurs, one or both power supplies will shut down. All
power remains off until you cycle the power switches (turn the power switches off,
wait at least 30 seconds, then turn the power switches on). For more information,
see “Restoring power after an unexpected shutdown” on page 94 and “Restoring
power after an over-temperature shutdown” on page 96.
The power supplies are customer replaceable units (CRUs) and do not require
preventive maintenance.
v Always keep the power supplies in their proper places to maintain proper
controller-unit cooling.
v Use only the supported power supplies for your specific storage subsystem.
Lever
Power LED
AC power
connector
Strainrelief clamp
Hot-swap power
supplies
Fault LED
AC power
switch
AC power
connector
Lever
Power LED
Fault LED
AC power
Strain- switch
relief clamp
Figure 93. Power supply controls
The following power-supply controls on the rear of the storage subsystem are
shown in Figure 93:
Levers
Use these locking handles to remove or install a power supply.
Power LED
These green LEDs light when the storage subsystem is turned on and
receiving ac power.
Fault LEDs
These amber LEDs light if a power supply failure occurs or if the power
supply is turned off.
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131
AC power switches
Use these switches to turn the power supplies on and off. You must turn on
both switches to take advantage of the redundant power supplies.
AC power connectors
This connection is for the ac power cord.
Strain-relief clamp
Use this clamp to provide strain relief on the power cord.
Removing a hot-swap power supply
Statement 8
CAUTION:
Never remove the cover on a power supply or any part that has the following label
attached.
Hazardous voltage, current, and energy levels are present inside any component that
has this label attached. There are no serviceable parts inside these components. If you
suspect a problem with one of these parts, contact a service technician.
To remove a hot-swap power supply, perform the following steps:
1. Turn off the ac power switch. See Figure 94.
Lever
AC power
connector
Strain-relief
clamp
AC power
switch
Figure 94. Lever for power supply removal
2.
3.
4.
5.
132
Unplug the power cord from the electrical outlet.
Disconnect the power cord from the ac power connector on the power supply.
Remove the nut and strain-relief clamp from the rear of the power supply.
Remove the power supply from the storage subsystem, as follows:
a. Grasp the pull-ring on the power-supply lever and squeeze the latch to
release it.
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
b. Pull the lever open and remove the power supply.
Installing a hot-swap power supply
Note: When you replace a power supply that has failed, ensure that the power
supply latch is mounted on the side of the power supply that faces the
middle of the storage subsystem. If it is not, remove the lever screw, flip the
lever over, and tighten the screw on the opposite side.
Figure 95. Installing a hot-swap power supply
Statement 8
CAUTION:
Never remove the cover on a power supply or any part that has the following label
attached.
Hazardous voltage, current, and energy levels are present inside any component that
has this label attached. There are no serviceable parts inside these components. If you
suspect a problem with one of these parts, contact a service technician.
To install a hot-swap power supply, perform the following steps:
1. Ensure that the ac power switch is off on the power supply that you are
installing.
2. Install the power supply in the storage subsystem, as follows:
a. Slide the power supply into the storage subsystem. Make sure that the lever
is pulled straight out as you slide the power supply into the storage
subsystem.
Chapter 5. Installing and replacing components
133
b. Close the lever until the pull-ring latch locks in place. Make sure that the
lever locks into place in the storage-server chassis.
3. Wrap the strain-relief clamp around the power cord approximately 20 cm (8 in.)
from the power-supply connection end.
4. Attach the power-supply nut and tighten it securely.
5. Connect the power cord to the AC power connector. See Figure 96.
Lever
AC power
connector
Strain-relief
clamp
AC power
switch
Figure 96. Connecting the power cord to the AC power connector
6. Plug the power cord into a properly grounded electrical outlet.
7. Turn on the power-supply switch.
8. Make sure that the green Power LED on the new power-supply CRU is on and
the amber Fault LED is off.
v If the Power LED is off, the power-supply CRU might not be installed
correctly. Remove it and then reinstall it.
v If the Fault LED is on or the Power LED stays off, see the Storage Manager
client for problem determination.
For more information about the LEDs, see “Checking the LEDs” on page 97.
Working with hot-swap RAID controllers (dual-controller models only)
Each RAID controller fits into the back of the storage subsystem and has the
following components:
v Battery
v Cache memory
v Two host ports and one expansion port
v One Ethernet port
v One serial port
Exception: The DS4300 single-controller storage subsystem (Model 6LU/6LX) has
only one RAID controller. Therefore, you cannot hot swap the RAID controller.
Each RAID controller has a unique hardware Ethernet address, which is printed on
a label on the front. There is also a label giving the cache battery manufacturing
and installation dates on the top of the controller unit. Figure 97 on page 135 shows
the location of these items.
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Note: Each DS4300 controller type has a different FRU number, as follows:
DS4300 storage subsystem type
Controller FRU part number (P/N)
Single-controller (Model 6LU/6LX)
24P8961
Dual-controller, standard (Model 60U/60X)
24P8059
Dual-controller, Turbo option with 1-GB memory
(Model 60U/60X)
24P8225
Important: Please note the following information.
v The cache battery is not included with the controller FRU.
v Ensure that you replace the failed controller with the appropriate FRU. There are
no protection mechanisms to block out an incorrect FRU from being inserted into
DS4300 controller slots. Unpredictable results can occur when nonmatching
controller FRUs are present in a single DS4300 chassis.
v After the new controller in a DS4300 single-controller storage subsystem (Model
6LU/6LX) completes the boot process, its WWNN will change. If you have any
applications that rely on the previous WWNNs, such as FC switch zoning
definitions, you must update the applications with the new WWNNs.
Ethernet address label
Battery-access panel (on bottom)
Levers
Figure 97. RAID controller levers and labels
For information about the RAID controller cache memory and rechargeable battery,
see “Cache memory and RAID controller battery” on page 101.
Replacing a RAID controller
When instructed to do so by the storage-management software, replace a RAID
controller that has failed.
Important: The replacement RAID controller CRU does not come with a RAID
controller cache battery installed, nor the mounting hardware that holds
the battery in place inside the RAID controller. You must remove the
cache battery that is inside the existing RAID controller that you are
replacing, and install that battery inside the replacement RAID controller
CRU, using the battery unit mounting hardware taken from the existing
controller. The steps to remove and replace the battery are included in
the following procedure.
Chapter 5. Installing and replacing components
135
Note: Avoid operating the DS4300 storage subsystem with controllers of different
cache sizes. Operating the storage subsystem with controllers of different
cache size will disable caching and might adversely affect performance.
To replace a RAID controller, perform the following steps:
1. Check the Storage Manager client online Help for instructions on RAID
controller failure-recovery procedures. Follow the steps provided in the
software documentation before continuing with step 2.
2. Label each cable that connects to the RAID controller that has failed. This
ensures that all cables will be properly reconnected to the new RAID controller.
Attention: Handle and install fiber-optic cables properly to avoid degraded
performance or loss of communications with devices. When working with
fiber-optic cables, do not pinch them, step on them, or locate them in aisles or
walkways. Do not overtighten the cable straps or bend the cables to a radius
smaller than 38 mm (1.5 in.).
3. From the RAID controller that has failed, remove the fibre-channel cables from
the SFPs. The location of these components is shown in Figure 98.
SFP module
Raid controller
Fiber-optic
cable
Figure 98. Location of SFPs and fiber-optic cables
After removing the fibre-channel cables, insert the protective caps.
4. Use the following procedure to remove the SFPs from the RAID controller that
has failed.
a. Remove the LC-LC fibre-channel cable from the SFP module. For more
information, see “Handling fiber-optic cables” on page 33.
b. Unlock the SFP module latch:
v For SFP modules that contain plastic tabs, unlock the SFP module latch
by pulling the plastic tab outward 10°, as shown in Figure 99 on page
137.
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Plastic tab
Protective cap
10 o
SFP module
Figure 99. Unlocking the SFP module latch - plastic variety
v For SFP modules that contain wire tabs, unlock the SFP module latch by
pulling the wire latch outward 90°, as shown in Figure 23 on page 36.
Wire
tab
Protective
cap
o
90
SFP
module
Figure 100. Unlocking the SFP module latch - wire variety
c. With the SFP latch in the unlocked position, extract the SFP module.
v For SFP modules that contain plastic tabs, slide the SFP module out of
the port.
v For SFP modules that contain wire tabs, grasp the wire latch and pull
the SFP module out of the minihub port.
d. Replace the protective cap on the SFP module.
e. Place the SFP module into a static-protective package.
f. Replace the protective cap on the port.
5. Remove the failed RAID controller (the Fault LED is on), as follows:
a. Push down on the latch (centered above the RAID controller). Pull both
levers at the same time out of the locked position.
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137
Figure 101. Pull-rings for removing a controller
b. Grasp the pull-rings; then pull on the levers and remove the RAID
controller.
6. To access the cache battery, place the RAID controller CRU bottom up on a
flat surface. Using a #2 Phillips head screwdriver, remove the six screws (three
on each side of the RAID controller) that hold the RAID controller bottom panel
to the sides of the RAID controller, as shown in Figure 102.
Note: Before you move the cache battery from your old controller to your
replacement controller, read the detailed instructions in this procedure.
Figure 102. Controller battery-access panel screws
7. Slide the RAID controller bottom panel away from the front side of the RAID
controller (away from the SFP slots and black center latch) to unlatch it from
the side panels.
8. Carefully flip over the RAID controller bottom panel. Disconnect the battery
harness on the battery from the two-pin connector on the controller board, as
shown in Figure 103 on page 139.
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Battery Harness
Two-Pin
Battery
Figure 103. Removing the controller battery
9. Remove the screw that holds the battery access panel. Carefully slide the
access panel toward the front to unlatch it from the three pins mounted on the
RAID controller bottom panel.
10. Remove the battery unit and place it on a dry, level surface. If this is a battery
replacement, then replace the old battery with the new one and go to step 17
on page 139.
11. Unpack the new RAID controller.
Set the RAID controller on a dry, level surface away from magnetic fields. Save
the packing material and documentation in case you need to return the RAID
controller.
12. Place the replacement RAID controller CRU bottom up on a flat surface. Using
a #2 Phillips head screwdriver, remove the six screws (three on each side of
the RAID controller) that hold the RAID controller bottom panel to the sides of
the RAID controller, as shown in Figure 102 on page 138.
13. Slide the RAID controller bottom panel away from the front side of the RAID
controller (away from the SFP slots and black center latch) to unlatch it from
the side panels.
14. Carefully flip over the RAID controller bottom panel.
15. Remove the screw that holds the battery access panel. Carefully slide the
access panel toward the front to unlatch it from the three pins mounted on the
RAID controller bottom panel.
16. If DHCP/BootP was used to automatically set the IP address of the controller,
record the MAC address of the upgrade controller and modify the existing
DHCP/BootP record of the RAID controller to be upgraded with the new MAC
address. Failure to modify the DHCP/BootP record will result in problems trying
to manage the storage subsystem using the existing IP address. This step
must be performed before you insert the upgrade controller into the DS4000
storage subsystem.
17. Position the battery inside the replacement RAID controller.
18. Reassemble the battery access panel to the RAID controller bottom panel by
aligning it with the three pins on the RAID controller bottom panel. Slide the
Chapter 5. Installing and replacing components
139
battery access panel toward the back until you can reinsert the screw that
holds the battery access panel to the RAID controller bottom panel. Do not
overtighten.
19. You must reconnect the battery harness to the two-pin connector on the
controller board.
Note: The connector is keyed so that there is only one way to attach the
harness to the connector. Do not force fit.
20. Flip the RAID controller bottom panel over and carefully place it on the
controller sides. Push the RAID controller bottom panel toward the front to
latch it to the side panels. If the controller bottom panel is placed correctly, you
should be able to access the mounting holes for the six screws that you
removed from step 6 on page 138. Reinsert the six screws. Do not overtighten.
21. Install the new RAID controller, as follows:
a. Slide the RAID controller all the way into the empty slot.
b. Close both levers until the latch locks into place.
22.
23.
24.
25.
Attention: When you replace the failed RAID controller, the
storage-management software automatically synchronizes the firmware
between the existing controller and the new controller. After you replace a
controller, always use the storage-management software to verify the firmware
levels and NVSRAM files.
Insert the SFPs according to the instructions in “Installing SFP modules” on
page 33.
Connect the fibre-channel cables to their original locations, according to the
instructions in Chapter 3, “Cabling the storage subsystem,” on page 29.
Wait approximately one minute, and then check the green Host Loop LED,
green Expansion Loop LED, and amber Fault LED on the new RAID controller.
v If the Host Loop LED or the Expansion Loop LED is off, the RAID controller
might not be inserted correctly. Remove the CRU and reinsert it.
v If the Fault LED is on, the Host Loop LED and the Expansion Loop LED
stay off, or any other Fault LED is on, see the Storage Manager client for
problem determination, or contact IBM support.
See the Storage Manager client online Help for instructions on bringing the
controller online.
Replacing the battery in the RAID controller
Each RAID controller contains a rechargeable battery that maintains the data in the
cache memory for three days without power to the unit.
Important: If you are replacing the battery in a DS4300 single-controller storage
subsystem (Model 6lU/6LX), complete the following steps before
beginning the replacement procedure:
v Schedule down time for the battery replacement, because the disk
will not be available during the procedure.
v Complete any necessary server preparation tasks.
v Save the configuration/profile.
v Use the Storage Manager client to flush and disable the cache on
the controller, using the following steps. Either check that the cache
LED on the back of the controller is off, or wait two to three minutes.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
1. In the Logical/Physical View of the Subsystem Management
window, right-click any of the logical drive tree nodes and select
Change-->Cache Settings. A Change Cache Settings window
opens.
2. Click Select All to select all logical drives, and deselect all of the
Cache Setting Enable check boxes, then click OK. Click OK
when the Confirmation window opens.
Note: A progress window shows the modification progress. After
the cache setting modification complete, click OK to close
the progress window and return to the Subsystem
Management window.
See the Storage Manager client online Help panels for more details
on disabling cache.
v Stop I/O to the storage subsystem.
v Unmount any mapped LUNs from the storage subsystem.
v Power down the DS4300 single-controller storage subsystem (Model
6LU/6LX).
Use the following procedure if the Storage Manager client instructs you to replace
the battery because the current battery has failed or is nearing its expiration date.
You can also use the Storage Manager client to check the status of the battery.
1. Check the Storage Manager client online Help for instructions on battery
replacement procedures. If you are using write-cache mirroring, this might
involve clearing cache memory on the RAID controller that contains the battery
that has failed. This is done by either placing the controller offline before
removing it from the DS4300 server or turning off caching in the DS4300
server, using the Storage Manager client. Follow the steps given in the
software procedure before you continue with this procedure.
Attention: When you handle static-sensitive devices, take precautions to
avoid damage from static electricity. For details about handling static-sensitive
devices, see “Handling static-sensitive devices” on page 105.
2. Unpack the new battery.
Set the new battery on a dry, level surface. Save all packing materials in case
you need to return the battery.
3.
4.
5.
6.
Note: The battery comes with a new battery label. You will need this label
later in the procedure.
Review all documentation that comes with the new battery for updated
replacement procedures and other information.
Use the Storage Manager client to locate the RAID controller that contains the
failed battery. (The RAID controller Fault LED might be on.)
Label each cable that connects to the RAID controller that contains the battery
that has failed. This ensures that all cables will be properly reconnected to the
RAID controller after you replace the battery.
Use the Storage Manager client to take offline the RAID controller that
contains the battery that has failed.
Attention: On DS4300 single-controller storage subsystem Model 6LU/6LX,
you can not place the controller offline. Instead, you must power down the
DS4300 storage subsystem. For more information on preparation tasks, see
the Important note in the beginning of this section.
Chapter 5. Installing and replacing components
141
7. Remove the fibre-channel cables and the SFPs from the RAID controller that
contains the battery that has failed or is nearing its expiration date. For more
information, see “Handling fiber-optic cables” on page 33.
8. Remove the RAID controller, as follows:
a. Push down on the latch, which is centered above the RAID controller. Pull
both levers at the same time out of the locked position.
b. Grasp the pull-rings; then pull on the levers and remove the RAID
controller.
9. Place the RAID controller CRU bottom up on a flat surface. Using a #2 Phillips
head screwdriver, remove the six screws (three on each side of the RAID
controller) that hold the RAID controller bottom panel to the sides of the RAID
controller, as shown in Figure 102 on page 138.
10. Slide the RAID controller bottom panel away from the front side of the RAID
controller (away from the SFP slots and black center latch) to unlatch it from
the side panels.
11. Carefully flip over the RAID controller bottom panel. Disconnect the battery
harness on the battery from the two-pin connector on the controller board as
shown in Figure 103 on page 139.
12. Remove the screw that holds the battery access panel. Carefully slide the
access panel toward the front to unlatch it from the three pins mounted on the
RAID controller bottom panel.
13. Remove the battery unit and place it on a dry, level surface. If this battery is a
replacement battery, then replace the old battery with the new one.
14. Write the battery replacement information on the label on the battery pack.
v Installed date – Write today’s date
v Replacement Date – Write the date three years from today’s date
Note: The preferred method of checking for the battery operating age is
through the Storage Manager client.
CONTAINS
SEALED LEAD
BATTERY.
BATTERY
MUST BE
RECYCLED.
Pb
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
CAUTION:
This product contains a sealed lead acid battery. The battery must be
recycled or disposed of properly. In the United States, IBM has
established a collection process for reuse, recycling, or proper disposal
of used IBM sealed lead acid batteries. For information on proper
disposal of these batteries, please contact IBM at 1-800-426-4333 your
IBM representative. For information on disposal of sealed lead acid
batteries outside the United States, go towww.ibm.com/ibm/environment/
products/batteryrecycle.shtml or contact your local waste disposal
facility. If the battery CRU is physically damaged or leaking electrolyte
gel, do not ship it to a recycling center. The battery contains sealed
lead-acid batteries that might be considered hazardous material. You
must handle this unit in accordance with all applicable local and federal
regulations.
15. Position the replacement battery inside the RAID controller.
16. Reassemble the battery access panel to the RAID controller bottom panel by
aligning it with the three pins on the RAID controller bottom panel. Slide the
battery access panel toward the back until you can reinsert the screw that
holds the battery access panel to the RAID controller bottom panel. Do not
overtighten
17. You must reconnect the battery harness to the two-pin connector on the
controller board.
Note: The connector is keyed so that there is only one way to attach the
hardness to the connector. Do not force fit.
18. Flip the RAID controller bottom panel over and carefully place it on the
controller sides. Push the RAID controller bottom panel toward the front to
latch it to the side panels. If the controller bottom panel is placed correctly, you
should be able to access the mounting holes for the six screws that you
removed in step 6 on page 138. Reinsert the six screws. Do not overtighten.
19. [NTD]: This information is stated in the Caution above. Does it need to be
said again? Seems redundant. Dispose of the used battery CRU according
to local and federal regulations, which might include hazardous material
handling procedures.
This product contains a sealed lead acid battery. The battery must be recycled
or disposed of properly. In the United States, IBM has established a collection
process for reuse, recycling, or proper disposal of used IBM sealed lead acid
batteries. For information on proper disposal of these batteries, please contact
IBM at 1-800-426-4333 your IBM representative. For information on disposal of
sealed lead acid batteries outside the United States, go to
www.ibm.com/ibm/environment/products/batteryrecycle.shtml or contact your
local waste disposal facility.
20. Install the RAID controller, as shown in Figure 104 on page 144.
Chapter 5. Installing and replacing components
143
Figure 104. Installing a new RAID controller
a. Slide the RAID controller all the way into the empty slot.
b. Close both levers until the latch locks into place.
21. Install the SFPs and then connect the fibre-channel cables to their original
locations.
22. On the DS4300 single-controller storage subsystem (Model 6LU/6LX), turn on
power to the storage subsystem and attached devices. For the proper
power-on sequence, see “Turning on the storage subsystem” on page 92.
23. On the DS4300 dual-controller storage subsystem (Model 60U/60X, standard
and Turbo option), wait approximately one minute. Then, use the Storage
Manager client to place the controller in online state. (It was placed offline in
step 6 on page 141.)
Note: If the operation fails, repeat the command. If the operation fails again,
reseat the controller and repeat this step.
24. Note that on all DS4300 models, it might take 15 minutes to a few hours for a
new battery to become fully charged. The Storage Manager client will show the
battery as failed until it is fully charged. Controller caching is automatically
disabled until the new battery becomes fully charged.
25. On the DS4300 single-server storage controller (Model 6LU/6LX), use the
Storage Manager client to re-enable the read I/O caching setting.
26. Use the Storage Manager client to monitor the status of the storage subsystem
and to reset the battery age.
Note: In the DS4300 dual-controller storage subsystem (Model 60U/60X),
there are two cache batteries (one for each controller). Make sure that
you reset the age for the correct battery.
Installing SFPs and fiber-optic cables
Each RAID controller unit has two host ports and one expansion port. SFPs are
inserted into the ports, and then fibre-channel cables are connected to the SFPs.
For information on installing SFPs and fiber-optic cables, see “Handling fiber-optic
cables” on page 33.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Chapter 6. Solving problems
This chapter contains information to help you solve some of the simpler problems
that you might have with your storage subsystem. It contains the problem indicators
and error messages along with suggested actions to take to resolve the problem.
For instructions on how to obtain service and technical assistance for your storage
subsystem and other IBM products, see “Getting information, help, and service” on
page xxii
Note: See the IBM TotalStorage DS4000 Hardware Maintenance Manual and
Problem Determination Guide for additional troubleshooting and debugging
procedures.
General checkout
Use the LEDs, the diagnostics and test information, and the Symptom-to-FRU index
to diagnose problems. The PD maps found in the IBM TotalStorage DS4000
Problem Determination Guide provide you with additional diagnostic aids.
Using the diagnostic hardware
The DS4300 Storage Subsystem comes with a wrap-plug adapter and LC coupler.
The wrap-plug adapter and LC coupler are used to identify fibre path problems. The
loopback and sendEcho tests are described in the IBM TotalStorage DS4000
Problem Determination Guide.
Troubleshooting
This section contains information to help you solve some of the problems you might
have with your storage subsystem. Table 17 contains the problem symptoms and
error messages, along with suggested actions to take to resolve problems.
Always use the DS4000 Storage Manager client to diagnose storage subsystem
problems and component failures and find solutions to problems that have definite
symptoms. You can use Table 6 which contains the problem symptoms, along with
suggested actions as a guide for troubleshooting problems in addition to the
DS4000 Storage Manager Recovery Guru in the Subsystem Management window.
Do not rely solely on Table 17 for a FRU replacement decision. In addition, do not
contact IBM Support unless the problem persists or the problem can not be
troubleshot using the information in Table 17 or the Recovery Guru procedures as
displayed in the DS4000 storage manager subsystem management window.
Table 17. Storage subsystem troubleshooting
Problem
indicator
Component
Possible cause
Possible solutions
Amber LED on
Drive CRU
Drive failure
Replace the drive that has failed.
Fan CRU
Fan failure
Replace the fan that has failed.
© Copyright IBM Corp. 2005, 2006
145
Table 17. Storage subsystem troubleshooting (continued)
Problem
indicator
Component
Possible cause
Possible solutions
RAID controller
Fault LED
RAID controller
failure
If the DS4300 RAID controller
has been placed offline by the
user, use storage management
software to place it online. If the
controller did not come on-line
after several attempts (>4),
replace the RAID controller.
Otherwise, use the DS4000
storage manage software to
determine whether the fault is
caused by any of the following:
v A failed cache battery.
(Controller cache battery will
also not be lit.) Replace the
battery if this is the case.
v A non-functional RAID
controller. Replace the
controller if this is the case.
Expansion or host SFP port empty
port bypass LED
No corrective action is needed if
this is a stand-alone storage
subsystem with no storage
expansion enclosures attached,
and if the system is properly
configured.
Otherwise, check to make sure
that the storage expansion
enclosure is powered on, SFPs
are inserted in the controller
expansion port and the storage
expansion enclosure ESM ports
and the FC cables are attached
properly.
146
Fibre-channel
cable is not
attached to the
storage
expansion
enclosure.
Connect the fibre-channel cable
to the expansion enclosure ESM
port; check other FC connections.
Storage
expansion
enclosures are
set at 1 Gbps.
The DS4300 supports 2 Gbps
fibre-channel connections only in
the drive loops. Make appropriate
hardware changes to ensure the
DS4300 ports are connecting to
ports that operate at 2 Gbps.
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Table 17. Storage subsystem troubleshooting (continued)
Problem
indicator
Amber LED on
(continued)
Component
Possible cause
Possible solutions
Expansion or host FC HBA or switch The DS4300 with controller
port bypass LED
can operate at 1 firmware version 05.33.xx.xx
(continued)
Gbps speed only. supports 2 Gbps fibre-channel
host connections. Upgrade to
controller firmware version
5.34.xx.xx or later (6.19.xx.xx is
recommended) to enable the
support of 1 Gbps host port
connections.
No incoming
signal detected.
v Reattach the SFPs and
fibre-channel cables.
v Perform fibre-channel (FC)
path diagnostic using the FC
loopback adapter and the path
diagnostic procedure in the
IBM TotalStorage DS4000
Problem Determination Guide.
Replace input and output
SFPs or FC cables as
necessary. Ensure that the
SFPs and FC cables are of
IBM supported options.
v Make sure that the storage
expansion enclosures are
power on and are in optimal
state.
v - Make sure that the storage
enclosure speed switch is set
to 2 Gbps.
Note: The storage expansion
enclosure must be powered
cycle before the new speed
setting becomes effective.
v A RAID controller
malfunctioned. Replace the
RAID controller if previous
steps did not solve the
problem.
Front panel
Amber LED is off Power-supply
and green LED off CRU
General system
error
Indicates that a Fault LED
somewhere on the storage
subsystem has turned on. (Check
for amber LEDs on CRUs.) Use
Storage Manager software to
diagnose server problems.
Power switch is
turned off or ac
power failure
Check that all of the power cords
are firmly plugged in. If
applicable, check that the main
circuit breakers for the rack
power distribution units or the AC
electrical outlets are turned on.
Turn on all power-supply
switches.
Chapter 6. Solving problems
147
Table 17. Storage subsystem troubleshooting (continued)
Problem
indicator
Component
Possible cause
Possible solutions
Amber and green
LEDs on
Power-supply
CRU
Power supply
failure
Replace the failed power-supply
CRU.
All green LEDs off All CRUs
Amber LED
flashing
148
Drive CRUs
Subsystem power Check that all storage-server
is off
power cords are plugged in and
the power switches are on. If
applicable, check that the main
circuit breakers for the rack or
the AC electrical outlets are
turned on.
AC power failure
Check the main circuit breaker
and ac outlet.
Power supply
failure
Replace the power supply.
Midplane failure
Have the midplane replaced
(service technician only).
Drive identify is in No corrective action is needed.
process
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Table 17. Storage subsystem troubleshooting (continued)
Problem
indicator
Component
Possible cause
Possible solutions
One or more
green LEDs off
Power supply
CRUs
Power cord
unplugged or
switches turned
off
Make sure that the power cord is
plugged in and the power-supply
switches are turned on.
All drive CRUs
Midplane failure
Have the midplane replaced
(service technician only).
Front panel
Power supply
problem
Make sure that the cords are
plugged in and power supplies
are turned on.
Hardware failure
If any other LEDs are on, replace
the midplane (service technician
only).
Battery
Battery failure
Replace the battery.
Cache active
The cache is
disabled
Use the storage-management
software to enable the logical
drive read and write cache
settings.
The cache
memory has
failed
Replace the RAID controller after
using the DS4000 storage
manager software to verify the
controller failure.
The cache
Use the storage-management
battery has failed software to check and replace
the battery.
Host loop
There is no I/O
Generate I/O.
Host or switch is
off or has failed
Check if host or switch is on.
Replace attached devices that
have failed.
Fibre-channel
cable has failed
Ensure that the fibre-channel
cables are undamaged and
properly connected.
SFP has failed
Ensure SFP is seated properly;
replace SFP.
RAID controller
has no power or
has failed
Ensure that the unit is powered
on. Replace RAID controller.
Chapter 6. Solving problems
149
Table 17. Storage subsystem troubleshooting (continued)
Problem
indicator
One or more
green LEDs off
(continued)
Component
Possible cause
Possible solutions
Expansion loop
Drives are
improperly
installed or not
installed
Ensure that the drives are
properly installed.
RAID controller
has no power or
has failed
Ensure that the unit is powered
on. Replace the RAID controller.
Impending drive
failure
A bad drive or drives can issue
LIPs that cause the drive
expansion loop to go down
momentarily. Use the RLS
function in the
storage-management software to
determine which drives are bad.
Replace the bad drives.
Externally
attached
expansion port
Device (SFP, FC
cables or ESM)
has failed.
Replace the storage expansion
enclosure SFP, fibre-channel
cable or the storage expansion
enclosure ESM as appropriate.
Use the DS4000 storage
manager software and the
fiber-channel path diagnostic
procedure as documented in the
IBM TotalStorage DS4000
Problem Determination Guide to
troubleshoot the failing
component.
Intermittent or
Some or all CRUs Defective ac
sporadic power
power source or
loss to the storage
partially
subsystem
plugged-in power
cord
Check the ac power source;
verify that the ac circuit that the
storage subsystem connects to is
not being overloaded. Reseat all
installed power cables and power
supplies. If applicable, check the
power components. Replace
defective power cords.
Power supply has Check for a Fault LED on the
failed
power supply, and replace the
failed CRU.
150
Operating
environment
temperature is >
40C
Ensure that the adequate cooling
is available for the configuration.
Refer to the Heat, airflow and
cooling for rack guidelines to
ensure proper cooling.
Midplane has
failed
Have the midplane replaced
(service technician only).
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Table 17. Storage subsystem troubleshooting (continued)
Problem
indicator
Component
Possible cause
Possible solutions
Unable to access
drives
Drives and
expansion loop
Fibre-channel
cabling has
failed.
Ensure that the fibre-channel
cables are undamaged and
properly connected.
Incorrect DS4300
controller
firmware installed
to support a
particular
DS4000 storage
expansion
enclosure model.
For example,
EXP810s require
controller
firmware version
6.19.xx.xx and
later.
Check the IBM DS4000 System
Storage product support Web site
for the latest version of controller
firmware and storage expansion
enclosure ESM firmware. Update
the firmware to the latest version
if required.
Storage
expansion
enclosures are
not powered on,
not supported or
failed.
Ensure that the storage
expansion enclosures are
powered on and are in optimal
state. Use the DS4000 storage
manager to determine whether
the storage expansion enclosure
is supported by the DS4300
subsystem or not and whether
the storage expansion enclosure
ESMs are in failed state or not.
SFP has failed.
Ensure SFP is seated properly;
replace SFP.
Drive failed or
bypassed.
Replace drive.
RAID controller
has failed.
Replace the RAID controller.
Midplane has
failed
Have the midplane replaced
(service technician only).
Random errors
Subsystem
Chapter 6. Solving problems
151
Table 17. Storage subsystem troubleshooting (continued)
Problem
indicator
The Storage
Manager client
Enterprise
Management
window sees each
storage
subsystem
controller as an
independent
storage
subsystem.
Component
Possible cause
Possible solutions
No drives are present in the
storage subsystem. Ensure that
at least one drive is present in
the storage subsystem so that it
can be configured properly.
One controller was replaced
incorrectly. The controller
firmware versions probably failed
to synchronize correctly. To
recover, perform the following
steps:
1. Remove and reinsert the
controller blade.
2. Wait 5 minutes.
3. Delete the controller entry
with the incorrect firmware
version from the DS4000
Storage Manager Enterprise
Management window.
4. Add the controller back to the
DS4000 Storage Manager
Enterprise Management
window using the Add
Device menu option in the
Enterprise Management
window.
5. If the Storage Manager client
Enterprise Management
window still shows each
storage subsystem controller
as an independent storage
subsystem or a partially
managed device, repeat this
procedure. If the problem still
persists, contact IBM support.
Parts listing
Figure 105 on page 153 and the following table provide a parts listing for the
DS4300 storage subsystem.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
2
1
8
3
4
7
6
5
Figure 105. DS4300 storage subsystem parts list
Index
Fibre channel Type 1722 DS4300 storage subsystem
FRU No.
1
Rail Kit Left/Right
37L0067
2
Fan assembly
19K1293
3
Power Supply assembly (400 W)
19K1289
4
FC RAID Controller (base model, 256 MB cache, no battery)
4
FC RAID Controller (Turbo, 1 GB cache, no battery)
24P8225
4
FC RAID Controller (model 6LU/6LX single-controller, 256 MB cache, no
battery)
24P8961
5
Midplane/frame (base model)
24P8129
5
Midplane/frame (model 6LU/6LX single-controller)
25R0107
6
Bezel assembly (DS4300)
25R0199
6
Bezel assembly (FAStT600)
24P8058
7
DASD Bezel Filler assembly
19K1291
8
Switch Harness
19K1297
Miscellaneous Hardware Kit
09N7288
Battery bracket
25R0089
Short Wave SFP
19K1280
Long Wave SFP
19K1281
Cable, 5M Optical
19K1266
Cable, 25M Optical
19K1267
Cable, 1M Optical
19K1265
9’ Line Cord
6952300
Battery, Cache
24P8062
Line Cord Jumper, High Voltage
36L8886
24P8059 (24P8206)
Chapter 6. Solving problems
153
Index
Fibre channel Type 1722 DS4300 storage subsystem
FRU No.
Cable, FRU SC-LC Adapter
19K1268
1.2-m FC copper cable (IBM TotalStorage SAN Integration Server only)
17P7508
Wrap plug (loopback adapter)
17P6918
Figure 72 on page 86 lists required power cords for the DS4000 storage
components discussed in this document by country and region.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Appendix A. Records
Whenever you add options to your controller unit, be sure to update the information
in this appendix. Accurate, up-to-date records make it easier to add other options
and provide needed data whenever you contact technical support.
Identification numbers
Record and retain the following information.
Product name:
IBM DS4300 Storage Subsystem
Machine:
Model number:
Serial number:
_______________________________________________________
_______________________________________________________
The serial number is located on the front bottom-right corner of the chassis and on
the rear of the storage subsystem.
Installed-device records
Use the following table to keep a record of the options that are installed in or
attached to your controller unit. This information can be helpful when you install
additional options or if you ever need to report a hardware problem. Copy these
tables before recording information in them, in case you need extra space to write
new values later, when you update your system configuration.
Drive location
Drive part and model numbers
Drive serial number
Bay 1
Bay 2
Bay 3
Bay 4
Bay 5
Bay 6
Bay 7
Bay 8
Bay 9
Bay 10
Bay 11
Bay 12
Bay 13
Bay 14
© Copyright IBM Corp. 2005, 2006
155
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Appendix B. Accessibility
This section provides information about alternate keyboard navigation, which is a
DS4000 Storage Manager accessibility feature. Accessibility features help a user
who has a physical disability, such as restricted mobility or limited vision, to use
software products successfully.
By using the alternate keyboard operations that are described in this section, you
can use keys or key combinations to perform Storage Manager tasks and initiate
many menu actions that can also be done with a mouse.
Note: In addition to the keyboard operations that are described in this section, the
DS4000 Storage Manager 9.14, 9.15, and 9.16 software installation packages for
Windows include a screen reader software interface. To enable the screen reader,
select Custom Installation when using the installation wizard to install Storage
Manager 9.14, 9.15, or 9.16 on a Windows host/management station. Then, in the
Select Product Features window, select Java Access Bridge in addition to the other
required host software components.
Table 18 defines the keyboard operations that enable you to navigate, select, or
activate user interface components. The following terms are used in the table:
v Navigate means to move the input focus from one user interface component to
another.
v Select means to choose one or more components, typically for a subsequent
action.
v Activate means to carry out the action of a particular component.
Note: In general, navigation between components requires the following keys:
v Tab - Moves keyboard focus to the next component or to the first member
of the next group of components
v Shift-Tab - Moves keyboard focus to the previous component or to the
first component in the previous group of components
v Arrow keys - Move keyboard focus within the individual components of a
group of components
Table 18. DS4000 Storage Manager alternate keyboard operations
Short cut
Action
F1
Open the Help.
F10
Move keyboard focus to main menu bar and post first
menu; use the arrow keys to navigate through the
available options.
Alt+F4
Close the management window.
Alt+F6
Move keyboard focus between dialogs (non-modal) and
between management windows.
© Copyright IBM Corp. 2005, 2006
157
Table 18. DS4000 Storage Manager alternate keyboard operations (continued)
Short cut
Action
Alt+ underlined letter
Access menu items, buttons, and other interface
components by using the keys associated with the
underlined letters.
For the menu options, select the Alt + underlined letter
combination to access a main menu, and then select the
underlined letter to access the individual menu item.
For other interface components, use the Alt + underlined
letter combination.
Ctrl+F1
Display or conceal a tool tip when keyboard focus is on
the toolbar.
Spacebar
Select an item or activate a hyperlink.
Ctrl+Spacebar
(Contiguous/Non-contiguous)
AMW Logical/Physical View
Select multiple drives in the Physical View.
To select multiple drives, select one drive by pressing
Spacebar, and then press Tab to switch focus to the next
drive you want to select; press Ctrl+Spacebar to select
the drive.
If you press Spacebar alone when multiple drives are
selected then all selections are removed.
Use the Ctrl+Spacebar combination to deselect a drive
when multiple drives are selected.
This behavior is the same for contiguous and
non-contiguous selection of drives.
158
End, Page Down
Move keyboard focus to the last item in the list.
Esc
Close the current dialog (does not require keyboard
focus).
Home, Page Up
Move keyboard focus to the first item in the list.
Shift+Tab
Move keyboard focus through components in the reverse
direction.
Ctrl+Tab
Move keyboard focus from a table to the next user
interface component.
Tab
Navigate keyboard focus between components or select
a hyperlink.
Down arrow
Move keyboard focus down one item in the list.
Left arrow
Move keyboard focus to the left.
Right arrow
Move keyboard focus to the right.
Up arrow
Move keyboard focus up one item in the list.
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Notices
This publication was developed for products and services offered in the U.S.A.
IBM may not offer the products, services, or features discussed in this document in
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© Copyright IBM Corp. 2005, 2006
159
pSeries
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xSeries
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Other company, product, or service names may be the trademarks or service marks
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Important notes
Processor speeds indicate the internal clock speed of the microprocessor; other
factors also affect application performance.
CD-ROM drive speeds list the variable read rate. Actual speeds vary and are often
less than the maximum possible.
When referring to processor storage, real and virtual storage, or channel volume,
KB stands for approximately 1000 bytes, MB stands for approximately 1 000 000
bytes, and GB stands for approximately 1 000 000 000 bytes.
When referring to hard disk drive capacity or communications volume, MB stands
for 1 000 000 bytes, and GB stands for 1 000 000 000 bytes. Total user-accessible
capacity may vary depending on operating environments.
Maximum internal hard disk drive capacities assume the replacement of any
standard hard disk drives and population of all hard disk drive bays with the largest
currently supported drives available from IBM.
Maximum memory may require replacement of the standard memory with an
optional memory module.
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Electronic emission notices
Federal Communications Commission (FCC) statement
Note: This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates,
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause
harmful interference, in which case the user will be required to correct the
interference at his own expense.
Properly shielded and grounded cables and connectors must be used in order to
meet FCC emission limits. IBM is not responsible for any radio or television
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unauthorized changes or modifications to this equipment. Unauthorized changes or
modifications could void the user’s authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
Chinese class A compliance statement
Attention: This is a class A statement. In a domestic environment, this product
might cause radio interference in which case the user might be required to take
adequate measures.
Industry Canada Class A emission compliance statement
This Class A digital apparatus complies with Canadian ICES-003.
Avis de conformité à la réglementation d’Industrie Canada
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du
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Attention: This is a Class A product. In a domestic environment this product may
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measures.
United Kingdom telecommunications safety requirement
Notice to Customers
This apparatus is approved under approval number NS/G/1234/J/100003 for indirect
connection to public telecommunication systems in the United Kingdom.
European Union EMC Directive conformance statement
This product is in conformity with the protection requirements of EU Council
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Notices
161
failure to satisfy the protection requirements resulting from a nonrecommended
modification of the product, including the fitting of non-IBM option cards.
This product has been tested and found to comply with the limits for Class A
Information Technology Equipment according to CISPR 22/European Standard EN
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environments to provide reasonable protection against interference with licensed
communication equipment.
Attention: This is a Class A product. In a domestic environment this product may
cause radio interference in which case the user may be required to take adequate
measures.
Taiwan electrical emission statement
Japanese Voluntary Control Council for Interference (VCCI) statement
Power cords
For your safety, IBM provides a power cord with a grounded attachment plug to use
with this IBM product. To avoid electrical shock, always use the power cord and
plug with a properly grounded outlet.
IBM power cords used in the United States and Canada are listed by Underwriter’s
Laboratories (UL) and certified by the Canadian Standards Association (CSA).
For units intended to be operated at 115 volts: Use a UL-listed and CSA-certified
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a maximum of 15 feet in length and a parallel blade, grounding-type attachment
plug rated 15 amperes, 125 volts.
For units intended to be operated at 230 volts (U.S. use): Use a UL-listed and
CSA-certified cord set consisting of a minimum 18 AWG, Type SVT or SJT,
162
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
three-conductor cord, a maximum of 15 feet in length and a tandem blade,
grounding-type attachment plug rated 15 amperes, 250 volts.
For units intended to be operated at 230 volts (outside the U.S.): Use a cord set
with a grounding-type attachment plug. The cord set should have the appropriate
safety approvals for the country in which the equipment will be installed.
IBM power cords for a specific country or region are usually available only in that
country or region.
IBM power cord part
number
Used in these countries and regions
13F9940
Argentina, Australia, China (PRC), New Zealand, Papua New
Guinea, Paraguay, Uruguay, Western Samoa
13F9979
Afghanistan, Algeria, Andorra, Angola, Austria, Belgium, Benin,
Bulgaria, Burkina Faso, Burundi, Cameroon, Central African Rep.,
Chad, Czech Republic, Egypt, Finland, France, French Guiana,
Germany, Greece, Guinea, Hungary, Iceland, Indonesia, Iran,
Ivory Coast, Jordan, Lebanon, Luxembourg, Macao S.A.R. of
China, Malagasy, Mali, Martinique, Mauritania, Mauritius, Monaco,
Morocco, Mozambique, Netherlands, New Caledonia, Niger,
Norway, Poland, Portugal, Romania, Senegal, Slovakia, Spain,
Sudan, Sweden, Syria, Togo, Tunisia, Turkey, former USSR,
Vietnam, former Yugoslavia, Zaire, Zimbabwe
13F9997
Denmark
14F0015
Bangladesh, Burma, Pakistan, South Africa, Sri Lanka
14F0033
Antigua, Bahrain, Brunei, Channel Islands, Cyprus, Dubai, Fiji,
Ghana, Hong Kong S.A.R. of China, India, Iraq, Ireland, Kenya,
Kuwait, Malawi, Malaysia, Malta, Nepal, Nigeria, Polynesia, Qatar,
Sierra Leone, Singapore, Tanzania, Uganda, United Kingdom,
Yemen, Zambia
14F0051
Liechtenstein, Switzerland
14F0069
Chile, Ethiopia, Italy, Libya, Somalia
14F0087
Israel
1838574
Thailand
6952301
Bahamas, Barbados, Bermuda, Bolivia, Brazil, Canada, Cayman
Islands, Colombia, Costa Rica, Dominican Republic, Ecuador, El
Salvador, Guatemala, Guyana, Haiti, Honduras, Jamaica, Japan,
Korea (South), Liberia, Mexico, Netherlands Antilles, Nicaragua,
Panama, Peru, Philippines, Saudi Arabia, Suriname, Taiwan,
Trinidad (West Indies), United States of America, Venezuela
Notices
163
164
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Glossary
This glossary provides definitions for the
terminology and abbreviations used in IBM
TotalStorage DS4000 publications.
host system and the external fibre-channel (FC) link and
vice versa. Also called an I/O adapter, host adapter, or
FC adapter.
If you do not find the term you are looking for, see
the IBM Glossary of Computing Terms located at
the following Web site:
advanced technology (AT) bus architecture. A bus
standard for IBM compatibles. It extends the XT bus
architecture to 16 bits and also allows for bus
mastering, although only the first 16 MB of main
memory are available for direct access.
www.ibm.com/ibm/terminology
This glossary also includes terms and definitions
from:
v Information Technology Vocabulary by
Subcommittee 1, Joint Technical Committee 1,
of the International Organization for
Standardization and the International
Electrotechnical Commission (ISO/IEC
JTC1/SC1). Definitions are identified by the
symbol (I) after the definition; definitions taken
from draft international standards, committee
drafts, and working papers by ISO/IEC
JTC1/SC1 are identified by the symbol (T) after
the definition, indicating that final agreement
has not yet been reached among the
participating National Bodies of SC1.
v IBM Glossary of Computing Terms. New York:
McGraw-Hill, 1994.
The following cross-reference conventions are
used in this glossary:
See
Refers you to (a) a term that is the
expanded form of an abbreviation or
acronym, or (b) a synonym or more
preferred term.
See also
Refers you to a related term.
Abstract Windowing Toolkit (AWT). A Java graphical
user interface (GUI).
accelerated graphics port (AGP). A bus specification
that gives low-cost 3D graphics cards faster access to
main memory on personal computers than the usual
peripheral component interconnect (PCI) bus. AGP
reduces the overall cost of creating high-end graphics
subsystems by using existing system memory.
access volume. A special logical drive that allows the
host-agent to communicate with the controllers in the
storage subsystem.
adapter. A printed circuit assembly that transmits user
data input/output (I/O) between the internal bus of the
© Copyright IBM Corp. 2005, 2006
agent. A server program that receives virtual
connections from the network manager (the client
program) in a Simple Network Management
Protocol-Transmission Control Protocol/Internet Protocol
(SNMP-TCP/IP) network-managing environment.
AGP. See accelerated graphics port.
AL_PA. See arbitrated loop physical address.
arbitrated loop. One of three existing fibre-channel
topologies, in which 2 - 126 ports are interconnected
serially in a single loop circuit. Access to the Fibre
Channel-Arbitrated Loop (FC-AL) is controlled by an
arbitration scheme. The FC-AL topology supports all
classes of service and guarantees in-order delivery of
FC frames when the originator and responder are on
the same FC-AL. The default topology for the disk array
is arbitrated loop. An arbitrated loop is sometimes
referred to as a Stealth Mode.
arbitrated loop physical address (AL_PA). An 8-bit
value that is used to uniquely identify an individual port
within a loop. A loop can have one or more AL_PAs.
array. A collection of fibre-channel or SATA hard drives
that are logically grouped together. All the drives in the
array are assigned the same RAID level. An array is
sometimes referred to as a ″RAID set.″ See also
redundant array of independent disks (RAID), RAID
level.
asynchronous write mode. In remote mirroring, an
option that allows the primary controller to return a write
I/O request completion to the host server before data
has been successfully written by the secondary
controller. See also synchronous write mode, remote
mirroring, Global Copy,Global Mirroring.
AT. See advanced technology (AT) bus architecture.
ATA. See AT-attached.
AT-attached. Peripheral devices that are compatible
with the original IBM AT computer standard in which
signals on a 40-pin AT-attached (ATA) ribbon cable
followed the timings and constraints of the Industry
Standard Architecture (ISA) system bus on the IBM PC
AT computer. Equivalent to integrated drive electronics
(IDE).
165
auto-volume transfer/auto-disk transfer (AVT/ADT).
A function that provides automatic failover in case of
controller failure on a storage subsystem.
customer replaceable unit (CRU). An assembly or
part that a customer can replace in its entirety when any
of its components fail. Contrast with field replaceable
unit (FRU).
AVT/ADT. See auto-volume transfer/auto-disk transfer.
AWT. See Abstract Windowing Toolkit.
basic input/output system (BIOS). The personal
computer code that controls basic hardware operations,
such as interactions with diskette drives, hard disk
drives, and the keyboard.
cyclic redundancy check (CRC). (1) A redundancy
check in which the check key is generated by a cyclic
algorithm. (2) An error detection technique performed at
both the sending and receiving stations.
dac. See disk array controller.
dar. See disk array router.
BIOS. See basic input/output system.
DASD. See direct access storage device.
BOOTP. See bootstrap protocol.
data striping. See striping.
bootstrap protocol (BOOTP). In Transmission Control
Protocol/Internet Protocol (TCP/IP) networking, an
alternative protocol by which a diskless machine can
obtain its Internet Protocol (IP) address and such
configuration information as IP addresses of various
servers from a BOOTP server.
default host group. A logical collection of discovered
host ports, defined host computers, and defined host
groups in the storage-partition topology that fulfill the
following requirements:
bridge. A storage area network (SAN) device that
provides physical and transport conversion, such as
Fibre Channel to small computer system interface
(SCSI) bridge.
v Share access to logical drives with default logical
drive-to-LUN mappings
bridge group. A bridge and the collection of devices
connected to it.
broadcast. The simultaneous transmission of data to
more than one destination.
cathode ray tube (CRT). A display device in which
controlled electron beams are used to display
alphanumeric or graphical data on an
electroluminescent screen.
client. A computer system or process that requests a
service of another computer system or process that is
typically referred to as a server. Multiple clients can
share access to a common server.
command. A statement used to initiate an action or
start a service. A command consists of the command
name abbreviation, and its parameters and flags if
applicable. A command can be issued by typing it on a
command line or selecting it from a menu.
community string. The name of a community
contained in each Simple Network Management
Protocol (SNMP) message.
concurrent download. A method of downloading and
installing firmware that does not require the user to stop
I/O to the controllers during the process.
CRC. See cyclic redundancy check.
CRT. See cathode ray tube.
v Are not involved in specific logical drive-to-LUN
mappings
device type. Identifier used to place devices in the
physical map, such as the switch, hub, or storage.
DHCP. See Dynamic Host Configuration Protocol.
direct access storage device (DASD). A device in
which access time is effectively independent of the
location of the data. Information is entered and retrieved
without reference to previously accessed data. (For
example, a disk drive is a DASD, in contrast with a tape
drive, which stores data as a linear sequence.) DASDs
include both fixed and removable storage devices.
direct memory access (DMA). The transfer of data
between memory and an input/output (I/O) device
without processor intervention.
disk array controller (dac). A disk array controller
device that represents the two controllers of an array.
See also disk array router.
disk array router (dar). A disk array router that
represents an entire array, including current and
deferred paths to all logical unit numbers (LUNs) (hdisks
on AIX). See also disk array controller.
DMA. See direct memory access.
domain. The most significant byte in the node port
(N_port) identifier for the fibre-channel (FC) device. It is
not used in the Fibre Channel-small computer system
interface (FC-SCSI) hardware path ID. It is required to
be the same for all SCSI targets logically connected to
an FC adapter.
CRU. See customer replaceable unit.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
drive channels. The DS4200, DS4700, and DS4800
subsystems use dual-port drive channels that, from the
physical point of view, are connected in the same way
as two drive loops. However, from the point of view of
the number of drives and enclosures, they are treated
as a single drive loop instead of two different drive
loops. A group of storage expansion enclosures are
connected to the DS4000 storage subsystems using a
drive channel from each controller. This pair of drive
channels is referred to as a redundant drive channel
pair.
drive loops. A drive loop consists of one channel from
each controller combined to form one pair of redundant
drive channels or a redundant drive loop. Each drive
loop is associated with two ports. (There are two drive
channels and four associated ports per controller.) For
the DS4800, drive loops are more commonly referred to
as drive channels. See drive channels.
DRAM. See dynamic random access memory.
Dynamic Host Configuration Protocol (DHCP). A
protocol defined by the Internet Engineering Task Force
that is used for dynamically assigning Internet Protocol
(IP) addresses to computers in a network.
dynamic random access memory (DRAM). A
storage in which the cells require repetitive application
of control signals to retain stored data.
ECC. See error correction coding.
EEPROM. See electrically erasable programmable
read-only memory.
receiving end. Most ECCs are characterized by the
maximum number of errors they can detect and correct.
ESD. See electrostatic discharge.
ESM canister. See environmental service module
canister.
automatic ESM firmware synchronization. When
you install a new ESM into an existing storage
expansion enclosure in a DS4000 storage subsystem
that supports automatic ESM firmware synchronization,
the firmware in the new ESM is automatically
synchronized with the firmware in the existing ESM.
EXP. See storage expansion enclosure.
expansion port (E_port). A port that connects the
switches for two fabrics.
Extended Industry Standard Architecture (EISA). A
bus standard for IBM compatibles that extends the
Industry Standard Architecture (ISA) bus architecture to
32 bits and allows more than one central processing
unit (CPU) to share the bus. See also Industry Standard
Architecture.
fabric. A Fibre Channel entity which interconnects and
facilitates logins of N_ports attached to it. The fabric is
responsible for routing frames between source and
destination N_ports using address information in the
frame header. A fabric can be as simple as a
point-to-point channel between two N-ports, or as
complex as a frame-routing switch that provides multiple
and redundant internal pathways within the fabric
between F_ports.
EISA. See Extended Industry Standard Architecture.
electrically erasable programmable read-only
memory (EEPROM). A type of memory chip which can
retain its contents without consistent electrical power.
Unlike the PROM which can be programmed only once,
the EEPROM can be erased electrically. Because it can
only be reprogrammed a limited number of times before
it wears out, it is appropriate for storing small amounts
of data that are changed infrequently.
electrostatic discharge (ESD). The flow of current
that results when objects that have a static charge
come into close enough proximity to discharge.
environmental service module (ESM) canister. A
component in a storage expansion enclosure that
monitors the environmental condition of the components
in that enclosure. Not all storage subsystems have ESM
canisters.
E_port. See expansion port.
error correction coding (ECC). A method for
encoding data so that transmission errors can be
detected and corrected by examining the data on the
fabric port (F_port). In a fabric, an access point for
connecting a user’s N_port. An F_port facilitates N_port
logins to the fabric from nodes connected to the fabric.
An F_port is addressable by the N_port connected to it.
See also fabric.
FC. See Fibre Channel.
FC-AL. See arbitrated loop.
feature enable identifier. A unique identifier for the
storage subsystem, which is used in the process of
generating a premium feature key. See also premium
feature key.
Fibre Channel (FC). A set of standards for a serial
input/output (I/O) bus capable of transferring data
between two ports at up to 100 Mbps, with standards
proposals to go to higher speeds. FC supports
point-to-point, arbitrated loop, and switched topologies.
Fibre Channel-Arbitrated Loop (FC-AL). See
arbitrated loop.
Fibre Channel Protocol (FCP) for small computer
system interface (SCSI). A high-level fibre-channel
mapping layer (FC-4) that uses lower-level fibre-channel
Glossary
167
(FC-PH) services to transmit SCSI commands, data,
and status information between a SCSI initiator and a
SCSI target across the FC link by using FC frame and
sequence formats.
HBA. See host bus adapter.
field replaceable unit (FRU). An assembly that is
replaced in its entirety when any one of its components
fails. In some cases, a field replaceable unit might
contain other field replaceable units. Contrast with
customer replaceable unit (CRU).
heterogeneous host environment. A host system in
which multiple host servers, which use different
operating systems with their own unique disk storage
subsystem settings, connect to the same DS4000
storage subsystem at the same time. See also host.
FlashCopy. A premium feature for DS4000 that can
make an instantaneous copy of the data in a volume.
host. A system that is directly attached to the storage
subsystem through a fibre-channel input/output (I/O)
path. This system is used to serve data (typically in the
form of files) from the storage subsystem. A system can
be both a storage management station and a host
simultaneously.
F_port. See fabric port.
FRU. See field replaceable unit.
GBIC. See gigabit interface converter
gigabit interface converter (GBIC). A transceiver that
performs serial, optical-to-electrical, and
electrical-to-optical signal conversions for high-speed
networking. A GBIC can be hot swapped. See also
small form-factor pluggable.
Global Copy. Refers to a remote logical drive mirror
pair that is set up using asynchronous write mode
without the write consistency group option. This is also
referred to as ″Asynchronous Mirroring without
Consistency Group.″ Global Copy does not ensure that
write requests to multiple primary logical drives are
carried out in the same order on the secondary logical
drives as they are on the primary logical drives. If it is
critical that writes to the primary logical drives are
carried out in the same order in the appropriate
secondary logical drives, Global Mirroring should be
used instead of Global Copy. See also asynchronous
write mode, Global Mirroring, remote mirroring, Metro
Mirroring.
Global Mirroring. Refers to a remote logical drive
mirror pair that is set up using asynchronous write mode
with the write consistency group option. This is also
referred to as ″Asynchronous Mirroring with Consistency
Group.″ Global Mirroring ensures that write requests to
multiple primary logical drives are carried out in the
same order on the secondary logical drives as they are
on the primary logical drives, preventing data on the
secondary logical drives from becoming inconsistent
with the data on the primary logical drives. See also
asynchronous write mode, Global Copy, remote
mirroring, Metro Mirroring.
graphical user interface (GUI). A type of computer
interface that presents a visual metaphor of a real-world
scene, often of a desktop, by combining high-resolution
graphics, pointing devices, menu bars and other menus,
overlapping windows, icons, and the object-action
relationship.
hdisk. An AIX term representing a logical unit number
(LUN) on an array.
host bus adapter (HBA). An interface between the
fibre-channel network and a workstation or server.
host computer. See host.
host group. An entity in the storage partition topology
that defines a logical collection of host computers that
require shared access to one or more logical drives.
host port. Ports that physically reside on the host
adapters and are automatically discovered by the
DS4000 Storage Manager software. To give a host
computer access to a partition, its associated host ports
must be defined.
hot swap. To replace a hardware component without
turning off the system.
hub. In a network, a point at which circuits are either
connected or switched. For example, in a star network,
the hub is the central node; in a star/ring network, it is
the location of wiring concentrators.
IBMSAN driver. The device driver that is used in a
Novell NetWare environment to provide multipath
input/output (I/O) support to the storage controller.
IC. See integrated circuit.
IDE. See integrated drive electronics.
in-band. Transmission of management protocol over
the fibre-channel transport.
Industry Standard Architecture (ISA). Unofficial
name for the bus architecture of the IBM PC/XT
personal computer. This bus design included expansion
slots for plugging in various adapter boards. Early
versions had an 8-bit data path, later expanded to 16
bits. The ″Extended Industry Standard Architecture″
(EISA) further expanded the data path to 32 bits. See
also Extended Industry Standard Architecture.
GUI. See graphical user interface.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
initial program load (IPL). The initialization procedure
that causes an operating system to commence
operation. Also referred to as a system restart, system
startup, and boot.
integrated circuit (IC). A microelectronic
semiconductor device that consists of many
interconnected transistors and other components. ICs
are constructed on a small rectangle cut from a silicon
crystal or other semiconductor material. The small size
of these circuits allows high speed, low power
dissipation, and reduced manufacturing cost compared
with board-level integration. Also known as a chip.
integrated drive electronics (IDE). A disk drive
interface based on the 16-bit IBM personal computer
Industry Standard Architecture (ISA) in which the
controller electronics reside on the drive itself,
eliminating the need for a separate adapter card. Also
known as an Advanced Technology Attachment
Interface (ATA).
Internet Protocol (IP). A protocol that routes data
through a network or interconnected networks. IP acts
as an intermediary between the higher protocol layers
and the physical network.
Internet Protocol (IP) address. The unique 32-bit
address that specifies the location of each device or
workstation on the Internet. For example, 9.67.97.103 is
an IP address.
interrupt request (IRQ). A type of input found on
many processors that causes the processor to suspend
normal processing temporarily and start running an
interrupt handler routine. Some processors have several
interrupt request inputs that allow different priority
interrupts.
local area network (LAN). A computer network
located on a user’s premises within a limited geographic
area.
logical block address (LBA). The address of a logical
block. Logical block addresses are typically used in
hosts’ I/O commands. The SCSI disk command
protocol, for example, uses logical block addresses.
logical partition (LPAR). (1) A subset of a single
system that contains resources (processors, memory,
and input/output devices). A logical partition operates as
an independent system. If hardware requirements are
met, multiple logical partitions can exist within a system.
(2) A fixed-size portion of a logical volume. A logical
partition is the same size as the physical partitions in its
volume group. Unless the logical volume of which it is a
part is mirrored, each logical partition corresponds to,
and its contents are stored on, a single physical
partition. (3) One to three physical partitions (copies).
The number of logical partitions within a logical volume
is variable.
logical unit number (LUN). An identifier used on a
small computer system interface (SCSI) bus to
distinguish among up to eight devices (logical units) with
the same SCSI ID.
loop address. The unique ID of a node in
fibre-channel loop topology sometimes referred to as a
loop ID.
loop group. A collection of storage area network
(SAN) devices that are interconnected serially in a
single loop circuit.
loop port. A node port (N_port) or fabric port (F_port)
that supports arbitrated loop functions associated with
an arbitrated loop topology.
IP. See Internet Protocol.
LPAR. See logical partition.
IPL. See initial program load.
LUN. See logical unit number.
IRQ. See interrupt request.
MAC. See medium access control.
ISA. See Industry Standard Architecture.
Java Runtime Environment (JRE). A subset of the
Java Development Kit (JDK) for end users and
developers who want to redistribute the Java Runtime
Environment (JRE). The JRE consists of the Java virtual
machine, the Java Core Classes, and supporting files.
JRE. See Java Runtime Environment.
label. A discovered or user entered property value that
is displayed underneath each device in the Physical and
Data Path maps.
LAN. See local area network.
LBA. See logical block address.
management information base (MIB). The
information that is on an agent. It is an abstraction of
configuration and status information.
man pages. In UNIX-based operating systems, online
documentation for operating system commands,
subroutines, system calls, file formats, special files,
stand-alone utilities, and miscellaneous facilities.
Invoked by the man command.
MCA. See micro channel architecture.
media scan. A media scan is a background process
that runs on all logical drives in the storage subsystem
for which it has been enabled, providing error detection
on the drive media. The media scan process scans all
Glossary
169
logical drive data to verify that it can be accessed, and
optionally scans the logical drive redundancy
information.
medium access control (MAC). In local area
networks (LANs), the sublayer of the data link control
layer that supports medium-dependent functions and
uses the services of the physical layer to provide
services to the logical link control sublayer. The MAC
sublayer includes the method of determining when a
device has access to the transmission medium.
Metro Mirroring. This term is used to refer to a
remote logical drive mirror pair which is set up with
synchronous write mode. See also remote mirroring,
Global Mirroring.
NMS. See network management station.
non-maskable interrupt (NMI). A hardware interrupt
that another service request cannot overrule (mask). An
NMI bypasses and takes priority over interrupt requests
generated by software, the keyboard, and other such
devices and is issued to the microprocessor only in
disastrous circumstances, such as severe memory
errors or impending power failures.
node. A physical device that allows for the
transmission of data within a network.
node port (N_port). A fibre-channel defined hardware
entity that performs data communications over the
fibre-channel link. It is identifiable by a unique worldwide
name. It can act as an originator or a responder.
MIB. See management information base.
micro channel architecture (MCA). Hardware that is
used for PS/2 Model 50 computers and above to
provide better growth potential and performance
characteristics when compared with the original
personal computer design.
nonvolatile storage (NVS). A storage device whose
contents are not lost when power is cut off.
N_port. See node port.
NVS. See nonvolatile storage.
Microsoft Cluster Server (MSCS). MSCS, a feature
of Windows NT Server (Enterprise Edition), supports the
connection of two servers into a cluster for higher
availability and easier manageability. MSCS can
automatically detect and recover from server or
application failures. It can also be used to balance
server workload and provide for planned maintenance.
NVSRAM. Nonvolatile storage random access
memory. See nonvolatile storage.
mini hub. An interface card or port device that
receives short-wave fiber channel GBICs or SFPs.
These devices enable redundant Fibre Channel
connections from the host computers, either directly or
through a Fibre Channel switch or managed hub, over
optical fiber cables to the DS4000 Storage Server
controllers. Each DS4000 controller is responsible for
two mini hubs. Each mini hub has two ports. Four host
ports (two on each controller) provide a cluster solution
without use of a switch. Two host-side mini hubs are
shipped as standard. See also host port, gigabit
interface converter (GBIC), small form-factor pluggable
(SFP).
out-of-band. Transmission of management protocols
outside of the fibre-channel network, typically over
Ethernet.
mirroring. A fault-tolerance technique in which
information on a hard disk is duplicated on additional
hard disks. See also remote mirroring.
Object Data Manager (ODM). An AIX proprietary
storage mechanism for ASCII stanza files that are
edited as part of configuring a drive into the kernel.
ODM. See Object Data Manager.
partitioning. See storage partition.
parity check. (1) A test to determine whether the
number of ones (or zeros) in an array of binary digits is
odd or even. (2) A mathematical operation on the
numerical representation of the information
communicated between two pieces. For example, if
parity is odd, any character represented by an even
number has a bit added to it, making it odd, and an
information receiver checks that each unit of information
has an odd value.
PCI local bus. See peripheral component interconnect
local bus.
model. The model identification that is assigned to a
device by its manufacturer.
PDF. See portable document format.
MSCS. See Microsoft Cluster Server.
performance events. Events related to thresholds set
on storage area network (SAN) performance.
network management station (NMS). In the Simple
Network Management Protocol (SNMP), a station that
runs management application programs that monitor
and control network elements.
NMI. See non-maskable interrupt.
170
peripheral component interconnect local bus (PCI
local bus). A local bus for PCs, from Intel, that
provides a high-speed data path between the CPU and
up to 10 peripherals (video, disk, network, and so on).
The PCI bus coexists in the PC with the Industry
Standard Architecture (ISA) or Extended Industry
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Standard Architecture (EISA) bus. ISA and EISA boards
plug into an IA or EISA slot, while high-speed PCI
controllers plug into a PCI slot. See also Industry
Standard Architecture, Extended Industry Standard
Architecture.
polling delay. The time in seconds between
successive discovery processes during which discovery
is inactive.
port. A part of the system unit or remote controller to
which cables for external devices (such as display
stations, terminals, printers, switches, or external
storage units) are attached. The port is an access point
for data entry or exit. A device can contain one or more
ports.
portable document format (PDF). A standard
specified by Adobe Systems, Incorporated, for the
electronic distribution of documents. PDF files are
compact; can be distributed globally by e-mail, the Web,
intranets, or CD-ROM; and can be viewed with the
Acrobat Reader, which is software from Adobe Systems
that can be downloaded at no cost from the Adobe
Systems home page.
premium feature key. A file that the storage
subsystem controller uses to enable an authorized
premium feature. The file contains the feature enable
identifier of the storage subsystem for which the
premium feature is authorized, and data about the
premium feature. See also feature enable identifier.
private loop. A freestanding arbitrated loop with no
fabric attachment. See also arbitrated loop.
program temporary fix (PTF). A temporary solution or
bypass of a problem diagnosed by IBM in a current
unaltered release of the program.
recoverable virtual shared disk (RVSD). A virtual
shared disk on a server node configured to provide
continuous access to data and file systems in a cluster.
redundant array of independent disks (RAID). A
collection of disk drives (array) that appears as a single
volume to the server, which is fault tolerant through an
assigned method of data striping, mirroring, or parity
checking. Each array is assigned a RAID level, which is
a specific number that refers to the method used to
achieve redundancy and fault tolerance. See also array,
parity check, mirroring, RAID level, striping.
redundant disk array controller (RDAC). (1) In
hardware, a redundant set of controllers (either
active/passive or active/active). (2) In software, a layer
that manages the input/output (I/O) through the active
controller during normal operation and transparently
reroutes I/Os to the other controller in the redundant set
if a controller or I/O path fails.
remote mirroring. Online, real-time replication of data
between storage subsystems that are maintained on
separate media. The Enhanced Remote Mirror Option is
a DS4000 premium feature that provides support for
remote mirroring. See also Global Mirroring, Metro
Mirroring.
ROM. See read-only memory.
router. A computer that determines the path of
network traffic flow. The path selection is made from
several paths based on information obtained from
specific protocols, algorithms that attempt to identify the
shortest or best path, and other criteria such as metrics
or protocol-specific destination addresses.
RVSD. See recoverable virtual shared disk.
SAI. See Storage Array Identifier.
PTF. See program temporary fix.
SA Identifier. See Storage Array Identifier.
RAID. See redundant array of independent disks
(RAID).
RAID level. An array’s RAID level is a number that
refers to the method used to achieve redundancy and
fault tolerance in the array. See also array, redundant
array of independent disks (RAID).
SAN. See storage area network.
SATA. See serial ATA.
RAID set. See array.
scope. Defines a group of controllers by their Internet
Protocol (IP) addresses. A scope must be created and
defined so that dynamic IP addresses can be assigned
to controllers on the network.
RAM. See random-access memory.
SCSI. See small computer system interface.
random-access memory (RAM). A temporary storage
location in which the central processing unit (CPU)
stores and executes its processes. Contrast with DASD.
segmented loop port (SL_port). A port that allows
division of a fibre-channel private loop into multiple
segments. Each segment can pass frames around as
an independent loop and can connect through the fabric
to other segments of the same loop.
RDAC. See redundant disk array controller.
read-only memory (ROM). Memory in which stored
data cannot be changed by the user except under
special conditions.
sense data. (1) Data sent with a negative response,
indicating the reason for the response. (2) Data
describing an I/O error. Sense data is presented to a
host system in response to a sense request command.
Glossary
171
serial ATA. The standard for a high-speed alternative
to small computer system interface (SCSI) hard drives.
The SATA-1 standard is equivalent in performance to a
10 000 RPM SCSI drive.
serial storage architecture (SSA). An interface
specification from IBM in which devices are arranged in
a ring topology. SSA, which is compatible with small
computer system interface (SCSI) devices, allows
full-duplex packet multiplexed serial data transfers at
rates of 20 Mbps in each direction.
optical fiber cables and switches. An SFP is smaller
than a gigabit interface converter (GBIC). See also
gigabit interface converter.
SNMP. See Simple Network Management Protocol and
SNMPv1.
SNMP trap event. (1) (2) An event notification sent by
the SNMP agent that identifies conditions, such as
thresholds, that exceed a predetermined value. See
also Simple Network Management Protocol.
server. A functional hardware and software unit that
delivers shared resources to workstation client units on
a computer network.
SNMPv1. The original standard for SNMP is now
referred to as SNMPv1, as opposed to SNMPv2, a
revision of SNMP. See also Simple Network
Management Protocol.
server/device events. Events that occur on the server
or a designated device that meet criteria that the user
sets.
SRAM. See static random access memory.
SFP. See small form-factor pluggable.
Simple Network Management Protocol (SNMP). In
the Internet suite of protocols, a network management
protocol that is used to monitor routers and attached
networks. SNMP is an application layer protocol.
Information on devices managed is defined and stored
in the application’s Management Information Base
(MIB).
SL_port. See segmented loop port.
SMagent. The DS4000 Storage Manager optional
Java-based host-agent software, which can be used on
Microsoft Windows, Novell NetWare, AIX, HP-UX,
Solaris, and Linux on POWER host systems to manage
storage subsystems through the host fibre-channel
connection.
SMclient. The DS4000 Storage Manager client
software, which is a Java-based graphical user interface
(GUI) that is used to configure, manage, and
troubleshoot storage servers and storage expansion
enclosures in a DS4000 storage subsystem. SMclient
can be used on a host system or on a storage
management station.
SSA. See serial storage architecture.
static random access memory (SRAM). Random
access memory based on the logic circuit know as
flip-flop. It is called static because it retains a value as
long as power is supplied, unlike dynamic random
access memory (DRAM), which must be regularly
refreshed. It is however, still volatile, meaning that it can
lose its contents when the power is turned off.
storage area network (SAN). A dedicated storage
network tailored to a specific environment, combining
servers, storage products, networking products,
software, and services. See also fabric.
Storage Array Identifier (SAI or SA Identifier). The
Storage Array Identifier is the identification value used
by the DS4000 Storage Manager host software
(SMClient) to uniquely identify each managed storage
server. The DS4000 Storage Manager SMClient
program maintains Storage Array Identifier records of
previously-discovered storage servers in the host
resident file, which allows it to retain discovery
information in a persistent fashion.
storage expansion enclosure (EXP). A feature that
can be connected to a system unit to provide additional
storage and processing capacity.
SMruntime. A Java compiler for the SMclient.
SMutil. The DS4000 Storage Manager utility software
that is used on Microsoft Windows, AIX, HP-UX, Solaris,
and Linux on POWER host systems to register and map
new logical drives to the operating system. In Microsoft
Windows, it also contains a utility to flush the cached
data of the operating system for a particular drive before
creating a FlashCopy.
small computer system interface (SCSI). A standard
hardware interface that enables a variety of peripheral
devices to communicate with one another.
small form-factor pluggable (SFP). An optical
transceiver that is used to convert signals between
172
storage management station. A system that is used
to manage the storage subsystem. A storage
management station does not need to be attached to
the storage subsystem through the fibre-channel
input/output (I/O) path.
storage partition. Storage subsystem logical drives
that are visible to a host computer or are shared among
host computers that are part of a host group.
storage partition topology. In the DS4000 Storage
Manager client, the Topology view of the Mappings
window displays the default host group, the defined host
group, the host computer, and host-port nodes. The
host port, host computer, and host group topological
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
elements must be defined to grant access to host
computers and host groups using logical drive-to-LUN
mappings.
striping. Splitting data to be written into equal blocks
and writing blocks simultaneously to separate disk
drives. Striping maximizes performance to the disks.
Reading the data back is also scheduled in parallel, with
a block being read concurrently from each disk then
reassembled at the host.
subnet. An interconnected but independent segment
of a network that is identified by its Internet Protocol (IP)
address.
sweep method. A method of sending Simple Network
Management Protocol (SNMP) requests for information
to all the devices on a subnet by sending the request to
every device in the network.
switch. A fibre-channel device that provides full
bandwidth per port and high-speed routing of data by
using link-level addressing.
switch group. A switch and the collection of devices
connected to it that are not in other groups.
switch zoning. See zoning.
synchronous write mode. In remote mirroring, an
option that requires the primary controller to wait for the
acknowledgment of a write operation from the
secondary controller before returning a write I/O request
completion to the host. See also asynchronous write
mode, remote mirroring, Metro Mirroring.
system name. Device name assigned by the vendor’s
third-party software.
TCP. See Transmission Control Protocol.
TCP/IP. See Transmission Control Protocol/Internet
Protocol.
terminate and stay resident program (TSR
program). A program that installs part of itself as an
extension of DOS when it is executed.
topology. The physical or logical arrangement of
devices on a network. The three fibre-channel
topologies are fabric, arbitrated loop, and point-to-point.
The default topology for the disk array is arbitrated loop.
TL_port. See translated loop port.
transceiver. A device that is used to transmit and
receive data. Transceiver is an abbreviation of
transmitter-receiver.
translated loop port (TL_port). A port that connects
to a private loop and allows connectivity between the
private loop devices and off loop devices (devices not
connected to that particular TL_port).
Transmission Control Protocol (TCP). A
communication protocol used in the Internet and in any
network that follows the Internet Engineering Task Force
(IETF) standards for internetwork protocol. TCP
provides a reliable host-to-host protocol between hosts
in packed-switched communication networks and in
interconnected systems of such networks. It uses the
Internet Protocol (IP) as the underlying protocol.
Transmission Control Protocol/Internet Protocol
(TCP/IP). A set of communication protocols that
provide peer-to-peer connectivity functions for both local
and wide-area networks.
trap. In the Simple Network Management Protocol
(SNMP), a message sent by a managed node (agent
function) to a management station to report an
exception condition.
trap recipient. Receiver of a forwarded Simple
Network Management Protocol (SNMP) trap.
Specifically, a trap receiver is defined by an Internet
Protocol (IP) address and port to which traps are sent.
Presumably, the actual recipient is a software
application running at the IP address and listening to
the port.
TSR program. See terminate and stay resident
program.
uninterruptible power supply. A source of power
from a battery that is installed between a computer
system and its power source. The uninterruptible power
supply keeps the system running if a commercial power
failure occurs, until an orderly shutdown of the system
can be performed.
user action events. Actions that the user takes, such
as changes in the storage area network (SAN), changed
settings, and so on.
worldwide port name (WWPN). A unique identifier for
a switch on local and global networks.
worldwide name (WWN). A globally unique 64-bit
identifier assigned to each Fibre Channel port.
WORM. See write-once read-many.
write-once read many (WORM). Any type of storage
medium to which data can be written only a single time,
but can be read from any number of times. After the
data is recorded, it cannot be altered.
WWN. See worldwide name.
zoning. (1) In Fibre Channel environments, the
grouping of multiple ports to form a virtual, private,
storage network. Ports that are members of a zone can
communicate with each other, but are isolated from
ports in other zones. (2) A function that allows
segmentation of nodes by address, name, or physical
port and is provided by fabric switches or hubs.
Glossary
173
Abstract Windowing Toolkit (AWT). A Java graphical
user interface (GUI).
controller. See also synchronous write mode, remote
mirroring, Global Copy,Global Mirroring.
accelerated graphics port (AGP). A bus specification
that gives low-cost 3D graphics cards faster access to
main memory on personal computers than the usual
peripheral component interconnect (PCI) bus. AGP
reduces the overall cost of creating high-end graphics
subsystems by using existing system memory.
AT. See advanced technology (AT) bus architecture.
access volume. A special logical drive that allows the
host-agent to communicate with the controllers in the
storage subsystem.
adapter. A printed circuit assembly that transmits user
data input/output (I/O) between the internal bus of the
host system and the external fibre-channel (FC) link and
vice versa. Also called an I/O adapter, host adapter, or
FC adapter.
advanced technology (AT) bus architecture. A bus
standard for IBM compatibles. It extends the XT bus
architecture to 16 bits and also allows for bus
mastering, although only the first 16 MB of main
memory are available for direct access.
agent. A server program that receives virtual
connections from the network manager (the client
program) in a Simple Network Management
Protocol-Transmission Control Protocol/Internet Protocol
(SNMP-TCP/IP) network-managing environment.
AGP. See accelerated graphics port.
AL_PA. See arbitrated loop physical address.
arbitrated loop. One of three existing fibre-channel
topologies, in which 2 - 126 ports are interconnected
serially in a single loop circuit. Access to the Fibre
Channel-Arbitrated Loop (FC-AL) is controlled by an
arbitration scheme. The FC-AL topology supports all
classes of service and guarantees in-order delivery of
FC frames when the originator and responder are on
the same FC-AL. The default topology for the disk array
is arbitrated loop. An arbitrated loop is sometimes
referred to as a Stealth Mode.
arbitrated loop physical address (AL_PA). An 8-bit
value that is used to uniquely identify an individual port
within a loop. A loop can have one or more AL_PAs.
array. A collection of fibre-channel or SATA hard drives
that are logically grouped together. All the drives in the
array are assigned the same RAID level. An array is
sometimes referred to as a ″RAID set.″ See also
redundant array of independent disks (RAID), RAID
level.
asynchronous write mode. In remote mirroring, an
option that allows the primary controller to return a write
I/O request completion to the host server before data
has been successfully written by the secondary
174
ATA. See AT-attached.
AT-attached. Peripheral devices that are compatible
with the original IBM AT computer standard in which
signals on a 40-pin AT-attached (ATA) ribbon cable
followed the timings and constraints of the Industry
Standard Architecture (ISA) system bus on the IBM PC
AT computer. Equivalent to integrated drive electronics
(IDE).
auto-volume transfer/auto-disk transfer (AVT/ADT).
A function that provides automatic failover in case of
controller failure on a storage subsystem.
AVT/ADT. See auto-volume transfer/auto-disk transfer.
AWT. See Abstract Windowing Toolkit.
basic input/output system (BIOS). The personal
computer code that controls basic hardware operations,
such as interactions with diskette drives, hard disk
drives, and the keyboard.
BIOS. See basic input/output system.
BOOTP. See bootstrap protocol.
bootstrap protocol (BOOTP). In Transmission Control
Protocol/Internet Protocol (TCP/IP) networking, an
alternative protocol by which a diskless machine can
obtain its Internet Protocol (IP) address and such
configuration information as IP addresses of various
servers from a BOOTP server.
bridge. A storage area network (SAN) device that
provides physical and transport conversion, such as
fibre channel to small computer system interface (SCSI)
bridge.
bridge group. A bridge and the collection of devices
connected to it.
broadcast. The simultaneous transmission of data to
more than one destination.
cathode ray tube (CRT). A display device in which
controlled electron beams are used to display
alphanumeric or graphical data on an
electroluminescent screen.
client. A computer system or process that requests a
service of another computer system or process that is
typically referred to as a server. Multiple clients can
share access to a common server.
command. A statement used to initiate an action or
start a service. A command consists of the command
name abbreviation, and its parameters and flags if
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
applicable. A command can be issued by typing it on a
command line or selecting it from a menu.
community string. The name of a community
contained in each Simple Network Management
Protocol (SNMP) message.
concurrent download. A method of downloading and
installing firmware that does not require the user to stop
I/O to the controllers during the process.
CRC. See cyclic redundancy check.
CRT. See cathode ray tube.
CRU. See customer replaceable unit.
customer replaceable unit (CRU). An assembly or
part that a customer can replace in its entirety when any
of its components fail. Contrast with field replaceable
unit (FRU).
cyclic redundancy check (CRC). (1) A redundancy
check in which the check key is generated by a cyclic
algorithm. (2) An error detection technique performed at
both the sending and receiving stations.
dac. See disk array controller.
dar. See disk array router.
DASD. See direct access storage device.
data striping. See striping.
default host group. A logical collection of discovered
host ports, defined host computers, and defined host
groups in the storage-partition topology that fulfill the
following requirements:
v Are not involved in specific logical drive-to-LUN
mappings
v Share access to logical drives with default logical
drive-to-LUN mappings
device type. Identifier used to place devices in the
physical map, such as the switch, hub, or storage.
DHCP. See Dynamic Host Configuration Protocol.
direct access storage device (DASD). A device in
which access time is effectively independent of the
location of the data. Information is entered and retrieved
without reference to previously accessed data. (For
example, a disk drive is a DASD, in contrast with a tape
drive, which stores data as a linear sequence.) DASDs
include both fixed and removable storage devices.
direct memory access (DMA). The transfer of data
between memory and an input/output (I/O) device
without processor intervention.
disk array controller (dac). A disk array controller
device that represents the two controllers of an array.
See also disk array router.
disk array router (dar). A disk array router that
represents an entire array, including current and
deferred paths to all logical unit numbers (LUNs) (hdisks
on AIX). See also disk array controller.
DMA. See direct memory access.
domain. The most significant byte in the node port
(N_port) identifier for the fibre-channel (FC) device. It is
not used in the fibre channel-small computer system
interface (FC-SCSI) hardware path ID. It is required to
be the same for all SCSI targets logically connected to
an FC adapter.
DRAM. See dynamic random access memory.
Dynamic Host Configuration Protocol (DHCP). A
protocol defined by the Internet Engineering Task Force
that is used for dynamically assigning Internet Protocol
(IP) addresses to computers in a network.
dynamic random access memory (DRAM). A
storage in which the cells require repetitive application
of control signals to retain stored data.
ECC. See error correction coding.
EEPROM. See electrically erasable programmable
read-only memory.
EISA. See Extended Industry Standard Architecture.
electrically erasable programmable read-only
memory (EEPROM). A type of memory chip which can
retain its contents without consistent electrical power.
Unlike the PROM which can be programmed only once,
the EEPROM can be erased electrically. Because it can
only be reprogrammed a limited number of times before
it wears out, it is appropriate for storing small amounts
of data that are changed infrequently.
electrostatic discharge (ESD). The flow of current
that results when objects that have a static charge
come into close enough proximity to discharge.
environmental service module (ESM) canister. A
component in a storage expansion enclosure that
monitors the environmental condition of the components
in that enclosure. Not all storage subsystems have ESM
canisters.
E_port. See expansion port.
error correction coding (ECC). A method for
encoding data so that transmission errors can be
detected and corrected by examining the data on the
receiving end. Most ECCs are characterized by the
maximum number of errors they can detect and correct.
ESD. See electrostatic discharge.
ESM canister. See environmental service module
canister.
Glossary
175
EXP. See storage expansion enclosure.
expansion port (E_port). A port that connects the
switches for two fabrics.
Extended Industry Standard Architecture (EISA). A
bus standard for IBM compatibles that extends the
Industry Standard Architecture (ISA) bus architecture to
32 bits and allows more than one central processing
unit (CPU) to share the bus. See also Industry Standard
Architecture.
field replaceable unit (FRU). An assembly that is
replaced in its entirety when any one of its components
fails. In some cases, a field replaceable unit might
contain other field replaceable units. Contrast with
customer replaceable unit (CRU).
FlashCopy. A premium feature for DS4000 that can
make an instantaneous copy of the data in a volume.
F_port. See fabric port.
FRU. See field replaceable unit.
fabric. A Fibre Channel entity which interconnects and
facilitates logins of N_ports attached to it. The fabric is
responsible for routing frames between source and
destination N_ports using address information in the
frame header. A fabric can be as simple as a
point-to-point channel between two N-ports, or as
complex as a frame-routing switch that provides multiple
and redundant internal pathways within the fabric
between F_ports.
fabric port (F_port). In a fabric, an access point for
connecting a user’s N_port. An F_port facilitates N_port
logins to the fabric from nodes connected to the fabric.
An F_port is addressable by the N_port connected to it.
See also fabric.
FAStT MSJ. See FAStT Management Suite Java.
FAStT Management Suite Java (FAStT MSJ). A
diagnostic and configuration utility that can be used on
Linux, Microsoft Windows, and Novell NetWare host
systems. In Linux, it is also used with the QLRemote
agent to define preferred and non-preferred paths for
logical drives.
FC. See fibre channel.
FC-AL. See arbitrated loop.
feature enable identifier. A unique identifier for the
storage subsystem, which is used in the process of
generating a premium feature key. See also premium
feature key.
fibre channel (FC). A set of standards for a serial
input/output (I/O) bus capable of transferring data
between two ports at up to 100 Mbps, with standards
proposals to go to higher speeds. FC supports
point-to-point, arbitrated loop, and switched topologies.
Fibre Channel-Arbitrated Loop (FC-AL). See
arbitrated loop.
Fibre Channel Protocol (FCP) for small computer
system interface (SCSI). A high-level fibre-channel
mapping layer (FC-4) that uses lower-level fibre-channel
(FC-PH) services to transmit SCSI commands, data,
and status information between a SCSI initiator and a
SCSI target across the FC link by using FC frame and
sequence formats.
176
GBIC. See gigabit interface converter
gigabit interface converter (GBIC). A transceiver that
performs serial, optical-to-electrical, and
electrical-to-optical signal conversions for high-speed
networking. A GBIC can be hot swapped. See also
small form-factor pluggable.
Global Copy. Refers to a remote logical drive mirror
pair that is set up using asynchronous write mode
without the write consistency group option. This is also
referred to as ″Asynchronous Mirroring without
Consistency Group.″ Global Copy does not ensure that
write requests to multiple primary logical drives are
carried out in the same order on the secondary logical
drives as they are on the primary logical drives. If it is
critical that writes to the primary logical drives are
carried out in the same order in the appropriate
secondary logical drives, Global Mirroring should be
used instead of Global Copy. See also asynchronous
write mode, Global Mirroring, remote mirroring, Metro
Mirroring.
Global Mirroring. Refers to a remote logical drive
mirror pair that is set up using asynchronous write mode
with the write consistency group option. This is also
referred to as ″Asynchronous Mirroring with Consistency
Group.″ Global Mirroring ensures that write requests to
multiple primary logical drives are carried out in the
same order on the secondary logical drives as they are
on the primary logical drives, preventing data on the
secondary logical drives from becoming inconsistent
with the data on the primary logical drives. See also
asynchronous write mode, Global Copy, remote
mirroring, Metro Mirroring.
graphical user interface (GUI). A type of computer
interface that presents a visual metaphor of a real-world
scene, often of a desktop, by combining high-resolution
graphics, pointing devices, menu bars and other menus,
overlapping windows, icons, and the object-action
relationship.
GUI. See graphical user interface.
HBA. See host bus adapter.
hdisk. An AIX term representing a logical unit number
(LUN) on an array.
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
host. A system that is directly attached to the storage
subsystem through a fibre-channel input/output (I/O)
path. This system is used to serve data (typically in the
form of files) from the storage subsystem. A system can
be both a storage management station and a host
simultaneously.
host bus adapter (HBA). An interface between the
fibre-channel network and a workstation or server.
host computer. See host.
host group. An entity in the storage partition topology
that defines a logical collection of host computers that
require shared access to one or more logical drives.
host port. Ports that physically reside on the host
adapters and are automatically discovered by the
DS4000 Storage Manager software. To give a host
computer access to a partition, its associated host ports
must be defined.
hot swap. To replace a hardware component without
turning off the system.
hub. In a network, a point at which circuits are either
connected or switched. For example, in a star network,
the hub is the central node; in a star/ring network, it is
the location of wiring concentrators.
integrated drive electronics (IDE). A disk drive
interface based on the 16-bit IBM personal computer
Industry Standard Architecture (ISA) in which the
controller electronics reside on the drive itself,
eliminating the need for a separate adapter card. Also
known as an Advanced Technology Attachment
Interface (ATA).
Internet Protocol (IP). A protocol that routes data
through a network or interconnected networks. IP acts
as an intermediary between the higher protocol layers
and the physical network.
Internet Protocol (IP) address. The unique 32-bit
address that specifies the location of each device or
workstation on the Internet. For example, 9.67.97.103 is
an IP address.
interrupt request (IRQ). A type of input found on
many processors that causes the processor to suspend
normal processing temporarily and start running an
interrupt handler routine. Some processors have several
interrupt request inputs that allow different priority
interrupts.
IP. See Internet Protocol.
IPL. See initial program load.
IRQ. See interrupt request.
IBMSAN driver. The device driver that is used in a
Novell NetWare environment to provide multipath
input/output (I/O) support to the storage controller.
IC. See integrated circuit.
IDE. See integrated drive electronics.
in-band. Transmission of management protocol over
the fibre-channel transport.
Industry Standard Architecture (ISA). Unofficial
name for the bus architecture of the IBM PC/XT
personal computer. This bus design included expansion
slots for plugging in various adapter boards. Early
versions had an 8-bit data path, later expanded to 16
bits. The ″Extended Industry Standard Architecture″
(EISA) further expanded the data path to 32 bits. See
also Extended Industry Standard Architecture.
initial program load (IPL). The initialization procedure
that causes an operating system to commence
operation. Also referred to as a system restart, system
startup, and boot.
integrated circuit (IC). A microelectronic
semiconductor device that consists of many
interconnected transistors and other components. ICs
are constructed on a small rectangle cut from a silicon
crystal or other semiconductor material. The small size
of these circuits allows high speed, low power
dissipation, and reduced manufacturing cost compared
with board-level integration. Also known as a chip.
ISA. See Industry Standard Architecture.
Java Runtime Environment (JRE). A subset of the
Java Development Kit (JDK) for end users and
developers who want to redistribute the Java Runtime
Environment (JRE). The JRE consists of the Java virtual
machine, the Java Core Classes, and supporting files.
JRE. See Java Runtime Environment.
label. A discovered or user entered property value that
is displayed underneath each device in the Physical and
Data Path maps.
LAN. See local area network.
LBA. See logical block address.
local area network (LAN). A computer network
located on a user’s premises within a limited geographic
area.
logical block address (LBA). The address of a logical
block. Logical block addresses are typically used in
hosts’ I/O commands. The SCSI disk command
protocol, for example, uses logical block addresses.
logical partition (LPAR). (1) A subset of a single
system that contains resources (processors, memory,
and input/output devices). A logical partition operates as
an independent system. If hardware requirements are
met, multiple logical partitions can exist within a system.
(2) A fixed-size portion of a logical volume. A logical
Glossary
177
partition is the same size as the physical partitions in its
volume group. Unless the logical volume of which it is a
part is mirrored, each logical partition corresponds to,
and its contents are stored on, a single physical
partition. (3) One to three physical partitions (copies).
The number of logical partitions within a logical volume
is variable.
MIB. See management information base.
logical unit number (LUN). An identifier used on a
small computer system interface (SCSI) bus to
distinguish among up to eight devices (logical units) with
the same SCSI ID.
Microsoft Cluster Server (MSCS). MSCS, a feature
of Windows NT Server (Enterprise Edition), supports the
connection of two servers into a cluster for higher
availability and easier manageability. MSCS can
automatically detect and recover from server or
application failures. It can also be used to balance
server workload and provide for planned maintenance.
loop address. The unique ID of a node in
fibre-channel loop topology sometimes referred to as a
loop ID.
micro channel architecture (MCA). Hardware that is
used for PS/2 Model 50 computers and above to
provide better growth potential and performance
characteristics when compared with the original
personal computer design.
MAC. See medium access control.
mini hub. An interface card or port device that
receives short-wave fiber channel GBICs or SFPs.
These devices enable redundant fibre channel
connections from the host computers, either directly or
through a fibre channel switch or managed hub, over
optical fiber cables to the DS4000 Storage Server
controllers. Each DS4000 controller is responsible for
two mini hubs. Each mini hub has two ports. Four host
ports (two on each controller) provide a cluster solution
without use of a switch. Two host-side mini hubs are
shipped as standard. See also host port, gigabit
interface converter (GBIC), small form-factor pluggable
(SFP).
management information base (MIB). The
information that is on an agent. It is an abstraction of
configuration and status information.
mirroring. A fault-tolerance technique in which
information on a hard disk is duplicated on additional
hard disks. See also remote mirroring.
man pages. In UNIX-based operating systems, online
documentation for operating system commands,
subroutines, system calls, file formats, special files,
stand-alone utilities, and miscellaneous facilities.
Invoked by the man command.
model. The model identification that is assigned to a
device by its manufacturer.
loop group. A collection of storage area network
(SAN) devices that are interconnected serially in a
single loop circuit.
loop port. A node port (N_port) or fabric port (F_port)
that supports arbitrated loop functions associated with
an arbitrated loop topology.
LPAR. See logical partition.
LUN. See logical unit number.
MCA. See micro channel architecture.
media scan. A media scan is a background process
that runs on all logical drives in the storage subsystem
for which it has been enabled, providing error detection
on the drive media. The media scan process scans all
logical drive data to verify that it can be accessed, and
optionally scans the logical drive redundancy
information.
medium access control (MAC). In local area
networks (LANs), the sublayer of the data link control
layer that supports medium-dependent functions and
uses the services of the physical layer to provide
services to the logical link control sublayer. The MAC
sublayer includes the method of determining when a
device has access to the transmission medium.
Metro Mirroring. This term is used to refer to a
remote logical drive mirror pair which is set up with
synchronous write mode. See also remote mirroring,
Global Mirroring.
178
MSCS. See Microsoft Cluster Server.
network management station (NMS). In the Simple
Network Management Protocol (SNMP), a station that
runs management application programs that monitor
and control network elements.
NMI. See non-maskable interrupt.
NMS. See network management station.
non-maskable interrupt (NMI). A hardware interrupt
that another service request cannot overrule (mask). An
NMI bypasses and takes priority over interrupt requests
generated by software, the keyboard, and other such
devices and is issued to the microprocessor only in
disastrous circumstances, such as severe memory
errors or impending power failures.
node. A physical device that allows for the
transmission of data within a network.
node port (N_port). A fibre-channel defined hardware
entity that performs data communications over the
fibre-channel link. It is identifiable by a unique worldwide
name. It can act as an originator or a responder.
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
nonvolatile storage (NVS). A storage device whose
contents are not lost when power is cut off.
N_port. See node port.
NVS. See nonvolatile storage.
NVSRAM. Nonvolatile storage random access
memory. See nonvolatile storage.
Object Data Manager (ODM). An AIX proprietary
storage mechanism for ASCII stanza files that are
edited as part of configuring a drive into the kernel.
ODM. See Object Data Manager.
out-of-band. Transmission of management protocols
outside of the fibre-channel network, typically over
Ethernet.
partitioning. See storage partition.
parity check. (1) A test to determine whether the
number of ones (or zeros) in an array of binary digits is
odd or even. (2) A mathematical operation on the
numerical representation of the information
communicated between two pieces. For example, if
parity is odd, any character represented by an even
number has a bit added to it, making it odd, and an
information receiver checks that each unit of information
has an odd value.
PCI local bus. See peripheral component interconnect
local bus.
portable document format (PDF). A standard
specified by Adobe Systems, Incorporated, for the
electronic distribution of documents. PDF files are
compact; can be distributed globally by e-mail, the Web,
intranets, or CD-ROM; and can be viewed with the
Acrobat Reader, which is software from Adobe Systems
that can be downloaded at no cost from the Adobe
Systems home page.
premium feature key. A file that the storage
subsystem controller uses to enable an authorized
premium feature. The file contains the feature enable
identifier of the storage subsystem for which the
premium feature is authorized, and data about the
premium feature. See also feature enable identifier.
private loop. A freestanding arbitrated loop with no
fabric attachment. See also arbitrated loop.
program temporary fix (PTF). A temporary solution or
bypass of a problem diagnosed by IBM in a current
unaltered release of the program.
PTF. See program temporary fix.
RAID. See redundant array of independent disks
(RAID).
RAID level. An array’s RAID level is a number that
refers to the method used to achieve redundancy and
fault tolerance in the array. See also array, redundant
array of independent disks (RAID).
RAID set. See array.
PDF. See portable document format.
RAM. See random-access memory.
performance events. Events related to thresholds set
on storage area network (SAN) performance.
random-access memory (RAM). A temporary storage
location in which the central processing unit (CPU)
stores and executes its processes. Contrast with DASD.
peripheral component interconnect local bus (PCI
local bus). A local bus for PCs, from Intel, that
provides a high-speed data path between the CPU and
up to 10 peripherals (video, disk, network, and so on).
The PCI bus coexists in the PC with the Industry
Standard Architecture (ISA) or Extended Industry
Standard Architecture (EISA) bus. ISA and EISA boards
plug into an IA or EISA slot, while high-speed PCI
controllers plug into a PCI slot. See also Industry
Standard Architecture, Extended Industry Standard
Architecture.
polling delay. The time in seconds between
successive discovery processes during which discovery
is inactive.
port. A part of the system unit or remote controller to
which cables for external devices (such as display
stations, terminals, printers, switches, or external
storage units) are attached. The port is an access point
for data entry or exit. A device can contain one or more
ports.
RDAC. See redundant disk array controller.
read-only memory (ROM). Memory in which stored
data cannot be changed by the user except under
special conditions.
recoverable virtual shared disk (RVSD). A virtual
shared disk on a server node configured to provide
continuous access to data and file systems in a cluster.
redundant array of independent disks (RAID). A
collection of disk drives (array) that appears as a single
volume to the server, which is fault tolerant through an
assigned method of data striping, mirroring, or parity
checking. Each array is assigned a RAID level, which is
a specific number that refers to the method used to
achieve redundancy and fault tolerance. See also array,
parity check, mirroring, RAID level, striping.
redundant disk array controller (RDAC). (1) In
hardware, a redundant set of controllers (either
active/passive or active/active). (2) In software, a layer
that manages the input/output (I/O) through the active
Glossary
179
controller during normal operation and transparently
reroutes I/Os to the other controller in the redundant set
if a controller or I/O path fails.
server/device events. Events that occur on the server
or a designated device that meet criteria that the user
sets.
remote mirroring. Online, real-time replication of data
between storage subsystems that are maintained on
separate media. The Enhanced Remote Mirror Option is
a DS4000 premium feature that provides support for
remote mirroring. See also Global Mirroring, Metro
Mirroring.
SFP. See small form-factor pluggable.
ROM. See read-only memory.
router. A computer that determines the path of
network traffic flow. The path selection is made from
several paths based on information obtained from
specific protocols, algorithms that attempt to identify the
shortest or best path, and other criteria such as metrics
or protocol-specific destination addresses.
RVSD. See recoverable virtual shared disk.
SAI. See Storage Array Identifier.
SA Identifier. See Storage Array Identifier.
SAN. See storage area network.
SATA. See serial ATA.
scope. Defines a group of controllers by their Internet
Protocol (IP) addresses. A scope must be created and
defined so that dynamic IP addresses can be assigned
to controllers on the network.
SCSI. See small computer system interface.
segmented loop port (SL_port). A port that allows
division of a fibre-channel private loop into multiple
segments. Each segment can pass frames around as
an independent loop and can connect through the fabric
to other segments of the same loop.
sense data. (1) Data sent with a negative response,
indicating the reason for the response. (2) Data
describing an I/O error. Sense data is presented to a
host system in response to a sense request command.
serial ATA. The standard for a high-speed alternative
to small computer system interface (SCSI) hard drives.
The SATA-1 standard is equivalent in performance to a
10 000 RPM SCSI drive.
serial storage architecture (SSA). An interface
specification from IBM in which devices are arranged in
a ring topology. SSA, which is compatible with small
computer system interface (SCSI) devices, allows
full-duplex packet multiplexed serial data transfers at
rates of 20 Mbps in each direction.
server. A functional hardware and software unit that
delivers shared resources to workstation client units on
a computer network.
180
Simple Network Management Protocol (SNMP). In
the Internet suite of protocols, a network management
protocol that is used to monitor routers and attached
networks. SNMP is an application layer protocol.
Information on devices managed is defined and stored
in the application’s Management Information Base
(MIB).
SL_port. See segmented loop port.
SMagent. The DS4000 Storage Manager optional
Java-based host-agent software, which can be used on
Microsoft Windows, Novell NetWare, HP-UX, and
Solaris host systems to manage storage subsystems
through the host fibre-channel connection.
SMclient. The DS4000 Storage Manager client
software, which is a Java-based graphical user interface
(GUI) that is used to configure, manage, and
troubleshoot storage servers and storage expansion
enclosures in a DS4000 storage subsystem. SMclient
can be used on a host system or on a storage
management station.
SMruntime. A Java compiler for the SMclient.
SMutil. The DS4000 Storage Manager utility software
that is used on Microsoft Windows, HP-UX, and Solaris
host systems to register and map new logical drives to
the operating system. In Microsoft Windows, it also
contains a utility to flush the cached data of the
operating system for a particular drive before creating a
FlashCopy.
small computer system interface (SCSI). A standard
hardware interface that enables a variety of peripheral
devices to communicate with one another.
small form-factor pluggable (SFP). An optical
transceiver that is used to convert signals between
optical fiber cables and switches. An SFP is smaller
than a gigabit interface converter (GBIC). See also
gigabit interface converter.
SNMP. See Simple Network Management Protocol and
SNMPv1.
SNMP trap event. (1) (2) An event notification sent by
the SNMP agent that identifies conditions, such as
thresholds, that exceed a predetermined value. See
also Simple Network Management Protocol.
SNMPv1. The original standard for SNMP is now
referred to as SNMPv1, as opposed to SNMPv2, a
revision of SNMP. See also Simple Network
Management Protocol.
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
SRAM. See static random access memory.
SSA. See serial storage architecture.
static random access memory (SRAM). Random
access memory based on the logic circuit know as
flip-flop. It is called static because it retains a value as
long as power is supplied, unlike dynamic random
access memory (DRAM), which must be regularly
refreshed. It is however, still volatile, meaning that it can
lose its contents when the power is turned off.
storage area network (SAN). A dedicated storage
network tailored to a specific environment, combining
servers, storage products, networking products,
software, and services. See also fabric.
Storage Array Identifier (SAI or SA Identifier). The
Storage Array Identifier is the identification value used
by the DS4000 Storage Manager host software
(SMClient) to uniquely identify each managed storage
server. The DS4000 Storage Manager SMClient
program maintains Storage Array Identifier records of
previously-discovered storage servers in the host
resident file, which allows it to retain discovery
information in a persistent fashion.
storage expansion enclosure (EXP). A feature that
can be connected to a system unit to provide additional
storage and processing capacity.
storage management station. A system that is used
to manage the storage subsystem. A storage
management station does not need to be attached to
the storage subsystem through the fibre-channel
input/output (I/O) path.
storage partition. Storage subsystem logical drives
that are visible to a host computer or are shared among
host computers that are part of a host group.
storage partition topology. In the DS4000 Storage
Manager client, the Topology view of the Mappings
window displays the default host group, the defined host
group, the host computer, and host-port nodes. The
host port, host computer, and host group topological
elements must be defined to grant access to host
computers and host groups using logical drive-to-LUN
mappings.
striping. Splitting data to be written into equal blocks
and writing blocks simultaneously to separate disk
drives. Striping maximizes performance to the disks.
Reading the data back is also scheduled in parallel, with
a block being read concurrently from each disk then
reassembled at the host.
subnet. An interconnected but independent segment
of a network that is identified by its Internet Protocol (IP)
address.
sweep method. A method of sending Simple Network
Management Protocol (SNMP) requests for information
to all the devices on a subnet by sending the request to
every device in the network.
switch. A fibre-channel device that provides full
bandwidth per port and high-speed routing of data by
using link-level addressing.
switch group. A switch and the collection of devices
connected to it that are not in other groups.
switch zoning. See zoning.
synchronous write mode. In remote mirroring, an
option that requires the primary controller to wait for the
acknowledgment of a write operation from the
secondary controller before returning a write I/O request
completion to the host. See also asynchronous write
mode, remote mirroring, Metro Mirroring.
system name. Device name assigned by the vendor’s
third-party software.
TCP. See Transmission Control Protocol.
TCP/IP. See Transmission Control Protocol/Internet
Protocol.
terminate and stay resident program (TSR
program). A program that installs part of itself as an
extension of DOS when it is executed.
topology. The physical or logical arrangement of
devices on a network. The three fibre-channel
topologies are fabric, arbitrated loop, and point-to-point.
The default topology for the disk array is arbitrated loop.
TL_port. See translated loop port.
transceiver. A device that is used to transmit and
receive data. Transceiver is an abbreviation of
transmitter-receiver.
translated loop port (TL_port). A port that connects
to a private loop and allows connectivity between the
private loop devices and off loop devices (devices not
connected to that particular TL_port).
Transmission Control Protocol (TCP). A
communication protocol used in the Internet and in any
network that follows the Internet Engineering Task Force
(IETF) standards for internetwork protocol. TCP
provides a reliable host-to-host protocol between hosts
in packed-switched communication networks and in
interconnected systems of such networks. It uses the
Internet Protocol (IP) as the underlying protocol.
Transmission Control Protocol/Internet Protocol
(TCP/IP). A set of communication protocols that
provide peer-to-peer connectivity functions for both local
and wide-area networks.
Glossary
181
trap. In the Simple Network Management Protocol
(SNMP), a message sent by a managed node (agent
function) to a management station to report an
exception condition.
trap recipient. Receiver of a forwarded Simple
Network Management Protocol (SNMP) trap.
Specifically, a trap receiver is defined by an Internet
Protocol (IP) address and port to which traps are sent.
Presumably, the actual recipient is a software
application running at the IP address and listening to
the port.
TSR program. See terminate and stay resident
program.
uninterruptible power supply. A source of power
from a battery that is installed between a computer
system and its power source. The uninterruptible power
supply keeps the system running if a commercial power
failure occurs, until an orderly shutdown of the system
can be performed.
user action events. Actions that the user takes, such
as changes in the storage area network (SAN), changed
settings, and so on.
worldwide port name (WWPN). A unique identifier for
a switch on local and global networks.
worldwide name (WWN). A globally unique 64-bit
identifier assigned to each Fibre Channel port.
WORM. See write-once read-many.
write-once read many (WORM). Any type of storage
medium to which data can be written only a single time,
but can be read from any number of times. After the
data is recorded, it cannot be altered.
WWN. See worldwide name.
zoning. (1) In Fibre Channel environments, the
grouping of multiple ports to form a virtual, private,
storage network. Ports that are members of a zone can
communicate with each other, but are isolated from
ports in other zones. (2) A function that allows
segmentation of nodes by address, name, or physical
port and is provided by fabric switches or hubs.
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
Index
Numerics
C
60U/60X
about figures xxii
airflow 19
and storage expansion enclosures 4, 46
configurations 44, 75
connecting Ethernet cable to 84
connecting hosts to 81
connecting power cables to 85
controller FRU part numbers 135
description 3
expansion port 30
features at a glance 8
inventory checklist 8
power redundancy 10, 85, 89, 108
Turbo option
description 4
number of storage expansion enclosures 46
upgrading to 109
upgrading from Model 6LU/6LX 105
weight specifications 18
6LU/6LX
about figures xxii
configurations 78
connecting Ethernet cable to 84
connecting hosts to 81
connecting power cable to 85
controller FRU part numbers 135
description 2
features at a glance 8
inventory checklist 8
power supply 130
restrictions 5, 8, 43, 45
upgrade kits 2, 105
upgrading to Model 60U/60X 105
weight specifications 18
cabling the DS4300
connecting 14-drive storage expansion
enclosures 61
connecting 16-drive storage expansion
enclosures 66
connecting redundant drive loop 64, 69
connecting two or more storage expansion
enclosures in a mixed environment 71
cabling the storage subsystem
connecting host to RAID controller 80
connecting power cables 85
connecting secondary interface cables 84
connecting storage expansion enclosure 45
maintaining redundancy 85
Class A electronic emission notice 160
cluster server support 8
cold-swap 109
cold-swap upgrading components
RAID controller 115
comments, how to send xxiv
components, storage subsystem
hard disk drives 120
hot-swap fans 129
power supply 130
RAID controller 105, 134
configuration, installing the storage subsystem 75
cooling 19
A
acoustical noise emissions values of storage
subsystem 18
address label, hardware Ethernet 134
air temperature specifications of storage subsystem 18
airflow 19
B
battery
recycling properly 143
replacing 140
BOOTP server
sample network 87
© Copyright IBM Corp. 2005, 2006
D
DHCP server
sample network 87
diagnostic interface port 85
dimensions of storage subsystem 18
direct-management method 84
documentation checklist 9
drive loop
using EXP500, EXP100, EXP700, or EXP710 61
drive loop configurations
connecting to DS4300
EXP500, EXP100, EXP700, or EXP710 storage
expansion enclosures 64
EXP810 storage expansion enclosures 69
mix of EXP100, EXP710, EXP810 storage
expansion enclosures 71
in a mixed environment 71
using EXP810 66
drive, hard disk
adding larger-capacity 124
filler panel 121
installing hot-swap 121
overview 120
replacing all at same time 124, 125
replacing hot-swap 123
replacing one at a time 125, 127
slim 121
183
DS4000/FAStT product renaming xvii
DS4300 storage subsystem
parts listing 152
dual-controller storage subsystem
about figures xxii
airflow 19
and storage expansion enclosures 4, 46
configurations 44, 75
connecting Ethernet cable to 84
connecting hosts to 81
connecting power cable to 85
connecting power cables to 85
controller FRU part numbers 135
description 3
expansion port 30
features at a glance 8
inventory checklist 8
power redundancy 10, 85, 89, 108
Turbo option
description 4
number of storage expansion enclosures 46
upgrading to 109
upgrading from single-controller storage
subsystem 105
weight specifications 18
E
electrical input specifications of storage subsystem 18
electronic emission Class A notice 160
electrostatic discharge, preventing 9
emergency shutdown
performing 95
restoring power 95
environmental specifications of storage subsystem 18
Ethernet
address label on RAID controller 134
connecting to RAID controller 84
ports 15
EXP100 SATA storage expansion enclosure 5
F
fan
overview 129
replacing 130
FAStT/DS4000 product renaming xvii
FCC Class A notice 160
features of the storage subsystem 7
fiber-optic cable
handling 33
installing 42
removing 43
working with 30
fibre channel
connections 43
loop configurations 74
fibre-channel cable adapter
LC-SC, using the 39
filler panel (on HDD) 121
fire suppression xxiv
184
FRU part numbers 135
G
GBIC
removing 43
glossary 165
H
hard disk drive
adding larger-capacity 124
filler panel 121
installing hot-swap 121
overview 120
replacing all at same time 124, 125
replacing hot-swap 123
replacing one at a time 125, 127
slim drive 121
hardware Ethernet address label 134
hardware service and support xxiv
Health Check process 89
heat output 19
host adapter, connecting to RAID controller 81
host-agent management method 82
hot-swap 109
hub
See managed hub 81
humidity specifications of storage subsystem 18
I
IBM System Storage DS4000
Health Check process 89
installing components
fan 130
fiber-optic cable 42
hard disk drives 121
power supply 133
RAID controller 135
Intermix premium feature 5
inventory checklist 8
L
laser cautions iv
LC-LC fibre-channel cable 36
connecting to an SFP 37
latches and lever 41
removing 39
LC-SC fibre-channel cable adapter
connecting to a device 40
connecting to an LC-LC fibre-channel cable 41
protective caps 41
removing an LC-LC fibre-channel cable 42
using 39
LEDs
troubleshooting 145
lever on power supply, changing location 133
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
loop configurations
overview 74
M
managed hub
in fibre channel loop configurations 74, 75
using to connect host to RAID controller 81
mixed configuration
one DS4300 and two or more storage expansion
enclosures 71
model
60U/60X
about figures xxii
weight specifications 18
6LU/6LX
about figures xxii
Model
60U/60X
airflow 19
and storage expansion enclosures 4, 46
configurations 44, 75
connecting Ethernet cable to 84
connecting hosts to 81
connecting power cables to 85
controller FRU part numbers 135
description 3
expansion port 30
features at a glance 8
inventory checklist 8
power redundancy 10, 85, 89, 108
Turbo option 4, 46, 109
upgrading from Model 6LU/6LX 105
6LU/6LX
configurations 78
connecting Ethernet cable to 84
connecting hosts to 81
connecting power cable to 85
controller FRU part numbers 135
description 2
features at a glance 8
inventory checklist 8
power supply 130
restrictions 5, 8, 43, 45
upgrade kits 2, 105
upgrading to Model 60U/60X 105
weight specifications 18
N
noise emission values of storage subsystem 18
notes, important 160
notices
electronic emission 160
FCC, Class A 160
safety information iii
static-sensitive precautions 105
used in this book xxii
O
over-temperature condition, shutdown 96
P
power cords
connecting 85
power on sequence, storage subsystem 92
power supply
changing lever location 133
installing 133
overview 130
removing 132
strain-relief clamp 132
premium features
FC/SATA Intermix 5
FlashCopy 4
R
rack mounting instructions for storage subsystem 21
RAID controller
cold-swap upgrading 115
connecting Ethernet cable to 84
connecting host to 80
connecting RS-232 (serial) cable 85
overview 105, 134
replacing 135
upgrading 109
records, keeping 155
recycling the cache battery 143
removing components
fiber-optic cable 43
GBIC 43
power supply 132
renaming xvii
replacing components
cache battery 140
fan 130
RAID controller 135
restoring power
after emergency shutdown 95
after unexpected shutdown 94
RS-232 (serial) port 85
S
safety requirements
laser cautions iv
server ID
switch setting 30
switch X1, setting the 30
switch X10, setting the 30
setting server ID 29
SFP modules
important information about 33
installing 34
removing 35
working with 30
shock and vibrations requirements 18
Index
185
shutdown sequence, storage subsystem 93
Simple Network Management Protocol (SNMP)
traps 87
single-controller storage subsystem
about figures xxii
configurations 78
connecting Ethernet cable to 84
connecting hosts to 81
controller FRU part numbers 135
description 2
features at a glance 8
inventory checklist 8
power supply 130
restrictions 5, 8, 43, 45
upgrade kits 2, 105
upgrading to dual-controller storage subsystem 105
weight specifications 18
slim drive 121
small form-factor pluggable module (SFP)
connecting an LC-LC fibre-channel cable 37
removing an LC-LC cable 39
SNMP traps 87
software checklist 9
software service and support xxiv
static-sensitive devices, handling 9, 105
static-sensitive precautions 105
storage expansion enclosure
connecting to storage subsystem 45
port 30
turning on before storage subsystem 92, 127
storage expansion enclosures
connecting 14- and 16-drive enclosures to the
DS4300 71
connecting 14-drive enclosures to the DS4300 61
connecting 16-drive enclosures to the DS4300 66
storage subsystem
components
hard disk drives 120
installing power supply 133
power supply 130
replacing RAID controller 135
upgrading RAID controller 109, 115
configuring 82
controller FRU part numbers 135
emergency shutdown 95
features 7
fibre channel connections 43
installation preparation 21
installing in a rack 24
installing SFP modules 33
inventory checklist 8
mounting in a rack 21
over-temperature shutdown 96
restoring power after emergency shutdown 95
restoring power after over-temperature shutdown 96
restoring power after unexpected shutdown 94
server ID settings 29
turning off 93
turning on 92
storage subsystem configuration, installing 75
186
storage-management software
installing 86
using to monitor storage subsystem status 96
strain-relief clamp on power supply 132
T
temperature specifications of storage subsystem 18
trademarks 159
troubleshooting 145
Turbo option
description 4
number of storage expansion enclosures 46
upgrading to 105, 109
turning off the storage subsystem 93
turning on the storage subsystem 92
U
United States electronic emission Class A notice 160
United States FCC Class A notice 160
upgrading components
RAID controller 109
W
Web sites, related xxiii
weight specifications of storage subsystem 18
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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This is your proof of entitlement to use this product, subject to the applicable terms
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IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide
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Installation, User’s, and Maintenance Guide
Publication No. GC26-7722-02
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