EMD Storage SecurStor 16i Product specifications
EMD
s t o ra g e
EXCEL
MERIDIAN
DATA, INC.
SecurStor 16i
iSCSI to SATA-II
RAID Subsystem
Installation and Hardware
Reference Manual
For all technical support assistance:
Phone: (800) 995-1014 or (972) 980-7098
Web: http://www.emdstorage.com
SecurStor 16i Installation and Hardware Reference Manual
Contact Information
Company Address:
Excel Meridian Data, Inc.
3220 Commander Drive, Suite 101
Carrollton, Texas 75006, U.S.A.
Phone: (800) 995-1014 or (972) 980-7098
Fax:
(972) 980-0375
URL:
www.EMDStorage.com
Hours: Mon-Fri 7:30am to 6:30pm Central Time
Copyright 2006
This Edition First Published 2006
All rights reserved. This publication may not be reproduced, transmitted, transcribed,
stored in a retrieval system, or translated into any language or computer language, in
any form or by any means, electronic, mechanical, magnetic, optical, chemical,
manual or otherwise, without the prior written consent of Excel Meridian Data.
Disclaimer
Excel Meridian Data makes no representations or warranties with respect to the
contents hereof and specifically disclaims any implied warranties of merchantability
or fitness for any particular purpose. Furthermore, Excel Meridian Data reserves the
right to revise this publication and to make changes from time to time in the content
hereof without obligation to notify any person of such revisions or changes. Product
specifications are also subject to change without prior notice.
Trademarks
Excel Meridian Data and the Excel Meridian logo are registered trademarks of Excel
Meridian Data, Inc. SecurStor 16i and other names prefixed with “EMD” and “SS”
are trademarks of Excel Meridian Data, Inc. PowerPC® is a trademark of
International Business Machines Corporation and Motorola Inc. Solaris and Java are
trademarks of Sun Microsystems, Inc. All other names, brands, products or services
are trademarks or registered trademarks of their respective owners.
RMA Policy
Please visit www.emdstorage.com for a detailed explanation of our RMA policy.
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SecurStor 16i Installation and Hardware Reference Manual
Warnings and Certifications
Restricted Access Location:
This equipment is intended to be installed in a RESTRICTED ACCESS LOCATION only.
Electric Shock Warning!
To Prevent Electric Shock:
Access to this equipment is granted to trained operators and service personnel only. Only
modules housed in hot-swap canisters are field-serviceable. Accessing the backplane can
cause electric shock.
FCC
(applies in the U.S. and Canada)
FCC Class B Radio Frequency Interference Statement
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules (47 CFR, Part
2, Part 15 and CISPR PUB. 22 Class B). These limits are designed to
provide reasonable protection against harmful interference when the
equipment is operated in a residential installation. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in
accordance with this user’s guide, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, you are encouraged to try to correct the
interference by one or more of the following measures:
•
Reorient or relocate the receiving antenna.
•
Increase the separation between the equipment and receiver.
•
Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
•
Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of 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.
Warning:
A shielded power cord is required in order to meet FCC emission limits and
also to prevent interference with nearby radio and television reception.
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SecurStor 16i Installation and Hardware Reference Manual
Use only shielded cables to connect I/O devices to this equipment. You are
cautioned that changes or modifications not expressly approved by the party
responsible for compliance could void your authority to operate the
equipment.
This device is in conformity with the EMC.
CB
CCC
(Certified Worldwide)
This device meets the requirements of the CB standard for electrical
equipment with regard to establishing a satisfactory level of safety for
persons using the device and for the area surrounding the apparatus. This
standard covers only safety aspects of the above apparatus; it does not
cover other matters, such as style or performance.
For Power Supplies’ compatibility to China Compulsory Certification.
ITE BSMI Class A, CNS 13438 (for Taiwan)
This device is in conformity with UL standards for safety.
Disposal of Old Electrical & Electronic Equipment (Applicable in the
European Union and other European countries with separate collection
systems)
This symbol on the product or on its packaging indicates that this product
shall not be treated as household waste. Instead it shall be handed over to
the applicable collection point for the recycling of electrical and
electronic equipment. By proper waste handling of this product you
ensure that it has no negative consequences for the environment and
human health, which could otherwise be caused if this product is thrown
into the garbage bin. The recycling of materials will help to conserve
natural resources.
For more details information about recycling of this product, please
contact your local city office, your household waste disposal service or
the shop where you purchased the product.
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SecurStor 16i Installation and Hardware Reference Manual
Safety Precautions
Precautions and Instructions
•
Prior to powering on the subsystem, ensure that the correct power range is being
used.
•
The SecurStor 16i subsystem comes with 16 drive bays. Leaving any of these
drive bays empty will greatly affect the efficiency of the airflow within the
enclosure, and will consequently lead to the system overheating, which can
cause irreparable damage.
•
If a module fails, leave it in place until you have a replacement unit and you are
ready to replace it.
•
Airflow Consideration: The subsystem requires an airflow clearance, especially
at the front and rear. The airflow direction is from front to back.
•
Handle subsystem modules using the retention screws, eject levers, and the metal
frames/face plates. Avoid touching PCB boards and connector pins.
•
To comply with safety, emission, or thermal requirements, none of the covers or
replaceable modules should be removed. Make sure that all enclosure modules
and covers are securely in place during operation.
•
Be sure that the rack cabinet into which the subsystem chassis will be installed
provides sufficient ventilation channels and airflow circulation around the
subsystem.
•
Provide a soft, clean surface to place your subsystem on before working on it.
Servicing on a rough surface may damage the exterior of the chassis.
•
If it is necessary to transport the subsystem, repackage all drives separately.
•
Dual-redundant controller models come with two controller modules that must
be installed into the subsystem. Single controller modules come with a single
controller module and a metal sheet is placed over the lower controller bay at the
rear of the subsystem. Since single-controller modules cannot be upgraded, this
metal sheet should NEVER be removed.
ESD Precautions
Observe all conventional anti-ESD methods while handling system modules. The
use of a grounded wrist strap and an anti-static work pad are recommended. Avoid
dust and debris in your work area.
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SecurStor 16i Installation and Hardware Reference Manual
About This Manual
This manual:
ƒ
Introduces the SecurStor 16i Subsystem series.
ƒ
Describes all the active components in the system.
ƒ
Provides recommendations and details about the hardware installation
process of the subsystem.
ƒ
Briefly describes how to monitor the subsystem.
ƒ
Describes how to maintain the subsystem.
This manual does not:
ƒ
Describe components that are not user-serviceable.
ƒ
Describe the configuration options of firmware, using terminal
emulation programs, or the RAIDWatch GUI that came with your
subsystem.
ƒ
Give a detailed description of the RAID processing units or the RAID
controllers embedded within the subsystem.
Who should read this manual?
This manual assumes that its readers are experienced with computer
hardware installation and are familiar with storage enclosures.
Related Documentation
•
Generic Operation Manual
•
Quick Install Guide
Conventions
Naming
From this point on and throughout the rest of this manual, the SecurStor 16i
series is referred to as simply the “subsystem” or the “system” and
SecurStor is frequently abbreviated as “SS.”
Important Messages
Important messages appear where mishandling of components is possible or
when work order can be misconceived. These messages also provide
important information associated with other aspects of system operation.
The word “important” is written as “IMPORTANT,” both capitalized and
bold and is followed by text in italics. The italicized text is the message to
be delivered.
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SecurStor 16i Installation and Hardware Reference Manual
Warnings
Warnings appear where overlooked details may cause damage to the
equipment or result in personal injury. Warnings should be taken seriously.
Warnings are easy to recognize. The word “warning” is written as
“WARNING,” both capitalized and bold and is followed by text in italics.
The italicized text is the warning message.
Cautions
Cautionary messages should also be heeded to help you reduce the chance
of losing data or damaging the system. Cautions are easy to recognize. The
word “caution” is written as “CAUTION,” both capitalized and bold and is
followed by text in italics. The italicized text is the cautionary message.
Notes
These messages inform the reader of essential but non-critical information.
These messages should be read carefully as any directions or instructions
contained therein can help you avoid making mistakes. Notes are easy to
recognize. The word “note” is written as “NOTE,” both capitalized and bold
and is followed by text in italics. The italicized text is the cautionary
message.
Steps
Steps are used to describe sequential steps of a specific work procedure.
Adherence to the sequential steps can guarantee effectiveness and lower the
chance of failure.
Lists
Bulleted Lists: Bulleted lists are statements of non-sequential facts. They
can be read in any order. Each statement is preceded by a round black dot
“•.”
Numbered Lists: Numbered lists are used to describe sequential steps you
should follow in order.
Software and Firmware Updates
Please contact Excel Meridian Data for the latest software or firmware updates. NOTE that
the firmware version installed on your system should provide the complete functionality listed
in the specification sheet/user’s manual. We provide special revisions for various application
purposes. Therefore, DO NOT upgrade your firmware unless you fully understand what a
firmware revision will do.
Problems that occur during the updating process may cause unrecoverable errors and system
down time. Always consult technical personnel before proceeding with any firmware upgrade.
vii
SecurStor 16i Installation and Hardware Reference Manual
Table of Contents
CONTACT INFORMATION ..................................................................................................... II
COPYRIGHT 2006.................................................................................................................. II
Disclaimer ........................................................................................................................... ii
Trademarks......................................................................................................................... ii
RMA Policy ......................................................................................................................... ii
WARNINGS AND CERTIFICATIONS .................................................................................... IIIV
TABLE OF CONTENTS ........................................................................................................ VIII
CHAPTER 1 NTRODUCTION
1.1
PRODUCT OVERVIEW ............................................................................................ 1-1
1.1.1
1.1.2
1.1.2.1
1.1.2.2
1.1.2.3
1.1.2.4
1.1.2.5
1.1.2.6
1.2
1.2.1
1.2.2
1.2.3
1.2.4
1.2.5
1.2.6
1.2.7
1.3
1.3.1
1.3.2
1.3.3
1.3.4
1.4
1.4.1
1.4.2
1.4.3
Product Introduction ..........................................................................................1-1
Enclosure Chassis..............................................................................................1-2
Chassis Overview...............................................................................................1-2
Physical Dimensions ..........................................................................................1-3
Front Panel Overview .........................................................................................1-3
Hard Drive Numbering........................................................................................1-4
Rear Panel Overview .........................................................................................1-4
Backplane Board ................................................................................................1-5
SUBSYSTEM COMPONENTS .................................................................................... 1-5
Drive Trays .........................................................................................................1-6
The RAID Controller Module ..............................................................................1-6
Controller Module Interfaces ..............................................................................1-7
DIMM Module .....................................................................................................1-8
BBU ....................................................................................................................1-8
Power Supply Units ............................................................................................1-8
Cooling Modules.................................................................................................1-9
SUBSYSTEM MONITORING .................................................................................. 1-10
I2C bus .............................................................................................................1-10
LED Indicators..................................................................................................1-10
Firmware (FW) .................................................................................................1-11
Audible Alarms .................................................................................................1-11
HOT-SWAPPABLE COMPONENTS ......................................................................... 1-11
Hot-swap Capabilities.......................................................................................1-11
Components .....................................................................................................1-12
Normalized Airflow ...........................................................................................1-12
CHAPTER 2 HARDWARE INSTALLATION
2.1
2.2
2.3
2.3.1
2.4
2.5
2.6
2.6.1
2.6.2
2.6.3
2.7
2.7.1
2.7.2
2.8
viii
INTRODUCTION ...................................................................................................... 2-1
SAFETY PRECAUTIONS .......................................................................................... 2-1
GENERAL INSTALLATION PROCEDURE ................................................................ 2-3
Installation Procedure Flowchart ........................................................................2-4
UNPACKING THE SUBSYSTEM ............................................................................... 2-4
INSTALLATION OVERVIEW ................................................................................... 2-4
BBU INSTALLATION ............................................................................................. 2-5
BBU Module Installation Overview .....................................................................2-5
BBU Warnings and Precautions .........................................................................2-5
Installation Procedure.........................................................................................2-5
HARD DRIVE INSTALLATION ................................................................................ 2-7
Hard Drive Installation Prerequisites ..................................................................2-7
Hard Drive/Drive Tray Installation.......................................................................2-7
RACK/CABINET INSTALLATION ............................................................................ 2-9
SecurStor 16i Installation and Hardware Reference Manual
CHAPTER 3 SUBSYSTEM MONITORING
3.1
3.2
SUBSYSTEM MONITORING OVERVIEW ................................................................ 3-1
STATUS-INDICATING LEDS .................................................................................. 3-2
3.2.1
Brief Overview of the LEDs ................................................................................3-2
3.2.2
Drive Tray LEDs .................................................................................................3-2
3.2.3
Controller Module LEDs .....................................................................................3-3
Restore NVRAM Defaults – a Push Button......................................................................3-4
3.2.4
Ethernet Port LEDs ............................................................................................3-5
3.2.5
BBU Module LED ...............................................................................................3-6
3.2.6
PSU LEDs ..........................................................................................................3-6
3.2.7
Cooling Module LEDs.........................................................................................3-7
3.3
3.3.1
3.3.2
3.4
AUDIBLE ALARM .................................................................................................. 3-8
Default Threshold Values ...................................................................................3-8
Failed Devices....................................................................................................3-9
I2C MONITORING .................................................................................................. 3-9
CHAPTER 4 SUBSYSTEM CONNECTION AND OPERATION
4.1
4.1.1
4.1.2
4.1.3
4.2
4.2.1
4.3
4.3.1
4.3.2
4.3.3
4.3.4
4.4
CONNECTION OVERVIEW ..................................................................................... 4-1
Cabling ...............................................................................................................4-1
Network Topologies............................................................................................4-2
Points of Failure .................................................................................................4-2
HOST CONNECTION TOPOLOGIES........................................................................ 4-2
Sample Topology – Direct-Attached, Dual-path Connection ..............................4-2
POWER ON ............................................................................................................ 4-5
Check List...........................................................................................................4-6
Power On Procedure ..........................................................................................4-6
Power On Enclosure ..........................................................................................4-6
Power On Status Check .....................................................................................4-7
POWER OFF PROCEDURE ..................................................................................... 4-8
CHAPTER 5 SUBSYSTEM MAINTENANCE AND UPGRADING
5.1
5.1.1
5.1.2
5.2
5.2.1
5.2.2
5.2.3
5.2.4
5.3
5.3.1
5.3.2
5.3.3
5.4
5.4.1
5.4.2
5.5
5.5.1
5.5.2
5.6
5.6.1
5.6.2
5.7
5.7.1
5.7.2
OVERVIEW ............................................................................................................ 5-1
Maintenance......................................................................................................5-1
General Notes on Component Replacement......................................................5-1
REPLACING CONTROLLER MODULE COMPONENTS ........................................... 5-2
Overview ............................................................................................................5-2
Notes on Controller Module Maintenance ..........................................................5-3
Removing the Controller Module ........................................................................5-3
Replacing the Controller Module ........................................................................5-5
REPLACING OR UPGRADING MEMORY MODULES .............................................. 5-6
Memory Module Installation Overview................................................................5-6
Selecting the Memory Modules ..........................................................................5-6
DIMM Module Installation ...................................................................................5-7
REPLACING A FAULTY BBU................................................................................. 5-8
BBU Warnings and Precautions .........................................................................5-9
Replacing a Faulty BBU .....................................................................................5-9
REPLACING A FAILED PSU MODULE ................................................................. 5-12
Notes on PSU Module Maintenance ................................................................5-12
Replacing the PSU Module ..............................................................................5-13
COOLING MODULE MAINTENANCE ................................................................... 5-15
Notes on Cooling Module Maintenance............................................................5-15
Replacing a Cooling Module.............................................................................5-16
REPLACING A FAILED HARD DRIVE ................................................................... 5-18
Hard Drive Maintenance Overview...................................................................5-18
Replacing a Hard Drive ....................................................................................5-19
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SecurStor 16i Installation and Hardware Reference Manual
APPENDIX A TECHNICAL SPECIFICATIONS
A.1
TECHNICAL SPECIFICATIONS ...............................................................................A-1
System Weight.................................................................................................. A-1
Vibration............................................................................................................ A-2
A.2
CONTROLLER SPECIFICATIONS ...........................................................................A-3
A.2.1
A.2.2
A.3
A.4
A.5
A.6
A.7
Configuration ..................................................................................................... A-3
Architecture ....................................................................................................... A-3
DRIVE TRAY SPECIFICATIONS .............................................................................A-4
POWER SUPPLY SPECIFICATIONS ........................................................................A-4
COOLING MODULE SPECIFICATIONS ...................................................................A-4
RAID MANAGEMENT ...........................................................................................A-5
FAULT TOLERANCE MANAGEMENT.....................................................................A-5
APPENDIX B PINOUTS
B.1. D-SUB 9 AND AUDIO JACK PINOUTS .........................................................................B-1
B.1.1.
B.1.2.
COM1 Serial Port Cable .................................................................................... B-1
COM2 Serial Port Cable to UPS........................................................................ B-2
B.2. NULL MODEM ............................................................................................................B-2
B.3. ETHERNET PORT PINOUTS.........................................................................................B-3
B.4. STP LAN CABLE........................................................................................................B-4
B.5. MAIN POWER .............................................................................................................B-4
APPENDIX C UNINTERRUPTIBLE POWER SUPPLY
C.1
C.2
C.3
C.4
C.4.1
C.4.2
C.4.3
C.5
C.6
C.6.1
C.6.2
C.6.3
x
UNINTERRUPTIBLE POWER SUPPLY OVERVIEW .................................................C-1
COMPATIBLE UPS SUPPLIES ................................................................................C-1
SERIAL COMMUNICATION CABLE........................................................................C-1
CONNECTING THE UPS TO THE SUBSYSTEM .......................................................C-1
Connect the PSU Module Power Cords ............................................................ C-1
Set the Baud Rate ............................................................................................. C-2
Connect COM2.................................................................................................. C-2
POWER ON ............................................................................................................C-2
UPS STATUS MONITORING ..................................................................................C-3
Normal Operational Status ................................................................................ C-3
UPS Messages.................................................................................................. C-3
UPS Message Summary ................................................................................... C-4
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xi
Chapter 1
Introduction
1.1 Product Overview
1.1.1
Product Introduction
This chapter briefly introduces the SecurStor 16I iSCSI-to-SATA-II storage
subsystem. The SecurStor 16i subsystem comes with four (4) GbE host ports capable
of large I/O transfers over iSCSI packets.
EMD Storage’s iSCSI storage supports
network initiators compatible with the
IETF iSCSI standard (RFC 3720) with
the following functionalities:
ƒ
ƒ
ƒ
ƒ
Access control via
IQN and IP
CHAP security
Jumbo frames
Header Digest mode
Figure 1-1: SecurStor 16i Subsystem
Internet SCSI (iSCSI) protocols are embedded in firmware and I/Os are rapidly
processed via dedicated algorithms. The iSCSI storage is built around reliable
hardware and sophisticated RAID technologies. I/O requests are packaged and
transmitted over local area networks (LANs), wide area networks (WANs), or the
Internet using the existing networking hardware and thus the total cost of ownership
is reduced. With the help of the networking flexibility, the subsystem is ideal for
location-independent data storage, backup, and retrieval.
The subsystem delivers extreme performance that result from the combined
performance of multiple disk drives and the level of data protection unseen in other
iSCSI storages. Featuring all standard RAID functionalities as other SecurStor
subsystems, the SS 16i subsystem provides a reliable platform for IT operations such
as backup, data-mining, or strategic allocation.
This subsystem features a high-density architecture that supports up to sixteen (16)
hot swappable, SATA-II hard drives in a 3U-profile chassis. The subsystem is
powered by a RAID controller board featuring the latest ASIC400, RAID6 ASIC as
the XOR engine. The pre-installed 512MB DDR RAM DIMM module can be
upgraded to a 2GB capacity DIMM to support complicated applications that hold
numerous ID/LUN combinations.
The controller board is housed in a metal canister and is referred to as the “controller
module.” The controller module is comprised of a main circuit board, an interface
faceplate, and a metal canister. The controller module is accessed through the rear of
the SecurStor 16i with the help of ejection levers. An optional battery backup unit
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SecurStor 16i Installation and Hardware Reference Manual
(BBU) is now equipped with an EEPROM that helps record the installation date and
notify system administrators if the battery’s life expectancy is reached. The BBU is
hot swappable and is accessed through the controller’s faceplate.
Four (4) RJ-45 connectors connect the subsystem to network switches or Ethernet
ports of independent devices. Dual-redundant, hot-swappable cooling modules and
power supplies protect the subsystem from overheating and the down time by power
outage. The modular nature of the subsystem and the easy accessibility to all major
components ensure the ease of the subsystem maintenance.
NOTE:
On receiving and unpacking your subsystem, please check the
package contents against the included Unpacking Checklist. If
any modules are missing, please contact your vendor
immediately.
1.1.2
Enclosure Chassis
1.1.2.1 Chassis Overview
The SecurStor 16I RAID storage is housed in a 3U metal chassis that is
divided into front and rear sections. Key components are respectively
accessed through the front (see Figure 1-3) and rear (see Figure 1-4) panels.
The enclosure chassis can be mounted into a standard 19-inch rack or
enclosure cabinet using support brackets that are separately-purchased.
NOTE:
Components accessed through the front panel are referred to as “Front
Panel Components” and components accessed through the rear panel are
referred to as “Rear Panel Components.”
1-2
Chapter 1 Introduction
Figure 1-2: Locations of Key Components
1.1.2.2 Physical Dimensions
The SecurStor 16I comes in a 3U chassis with the following dimensions:
ƒ
With handles: 483mm (W) x 131mm (H) x 504.3mm (L) (19 x 5.2
x 21 inches)
ƒ
Without handles: 445mm x 130mm x 487mm (17.5 x 5.1 x 19.2
inches)
1.1.2.3
Front Panel Overview
The front section of the subsystem features a 4x3 layout for twelve (12) 3.5inch drives. The two (2) handles on the front of the subsystem enable you to
easily insert/extract the chassis into/from a rack or cabinet. The front panel
of the SecurStor 16I RAID subsystem described in this manual is shown in
Figure 1-3. A description of each front panel component is given below:
Figure 1-3: SecurStor 16I Front View
1-3
SecurStor 16i Installation and Hardware Reference Manual
The front panel shown in Figure 1-3 accommodates the following
components:
•
Drive bays with drive tray canisters: The drive bays house the
SecurStor 16I hard drives.
•
Forearm handles: The subsystem has right and left handles for
easier rackmounting and handling.
1.1.2.4
Hard Drive Numbering
The front section of the SecurStor 16I enclosure houses sixteen (16) hard
drives in a 4x4 configuration. When viewed from the front, the drive bays
(slots) are numbered 1 to 16 from left to right and then from top to bottom.
Figure 1-4: Hard Drive Numbering
1.1.2.5
Rear Panel Overview
The rear section of the SecurStor 16I subsystem is accessed through the rear
panel and is reserved for a single RAID controller module, one (1) optional
BBU, two (2) power supply units (PSUs), and two (2) cooling modules.
A rear view is of the subsystem is shown below. Descriptions of each rear
panel component are given below:
Figure 1-5: SecurStor 16I-2 Rear View
The rear panel shown in Figure 1-5 accommodates the following
components:
•
1-4
RAID controller module: The RAID controller module
manages all functionalities provided with the subsystem,
and all interface connectors are on located on the
controller’s faceplate. (See Section 0)
Chapter 1 Introduction
•
1.1.2.6
BBU module: An optional BBU module sustains
unfinished writes cached in memory during a power
outage in order to prevent data loss. (See Section 0)
•
PSU modules: The hot-swappable PSUs receive singlephase power and deliver +5V, +12V, and +3.3V power to
the subsystem. A power switch is located on each PSU to
turn the system on and off. (See Section 0)
•
Cooling modules: The redundant cooling modules
ventilate the subsystem to maintain a cooling airflow
across the subsystem. (See Section 0)
Backplane Board
An internal backplane board separates the front and rear sections of the
SecurStor 16I. The PCB board consists of traces for logic level signals and
low voltage power paths. It contains no user-serviceable components.
WARNING!
When inserting a removable module, DO NOT USE EXCESSIVE
FORCE! Forcing or slamming a module can damage the pins on the
module connectors either on the module itself or on the backplane. Gently
push the module until it reaches the end of module slot. Feel the contact
resistance and use slightly more pressure to ensure the module connectors
are correctly mated. If the module comes with ejection levers or retention
screws, use them to secure the module.
1.2 Subsystem Components
The SecurStor 16I houses many active components and most of them can be accessed
through either the front or rear panel. The modular design of the active components
facilitates their easy installation and removal. Hot-swap mechanisms are incorporated
to eliminate power surges and signal glitches that might occur while removing or
installing these modules.
1-5
SecurStor 16i Installation and Hardware Reference Manual
1.2.1 Drive Trays
Figure 1-6: Drive Tray Front View
The SecurStor 16I subsystem comes with sixteen (16) drive trays (see
Figure 1-6) designed to accommodate separately purchased, standard 1-inch
pitch, 3.5-inch SATA-II disk drives. The drive bays are accessible from the
enclosure front panel. Two (2) LEDs on the front bezel indicate the
operating statuses. A key-lock on each drive tray secures the hard drive in
place, while a release button enables fast retrieval of a hard drive.
WARNING!
Be careful not to warp, twist, or contort the drive tray in any way (e.g., by
dropping it or resting heavy objects on it). The drive tray has been
customized to fit into the drive bays of the subsystem. If the drive bay
superstructure is deformed or altered, the drive trays may not fit into the
drive bays.
1.2.2 The RAID Controller Module
The default size for the DDR RAID controller module is 512MB. RAID
controller module contains a main circuit board, a preinstalled 512MB
capacity or above DDR RAM DIMM module, and the controller module
interfaces. The controller module contains no user-serviceable components
and should never be removed or opened, except when installing/upgrading
the cache memory inside.
WARNING!
Although the RAID controller can be removed, the only time you should
touch the controller itself is to install the memory modules. The RAID
controller is built of sensitive components and unnecessary tampering can
damage the controller.
The heart of the SecurStor 16I RAID controller subsystem is the iSCSI-toSATA controller board. The controller comes with four (4) GbE Ethernet
host ports. The subsystem connects to the host through RJ-45 connectors,
while the connectors are also ready to connect to one or more network
1-6
Chapter 1 Introduction
switches, enabling access to your storage volumes in complex
configurations such as data-sharing or network zoning.
The docking connector at the rear of the controller board connects the
controller module to the backplane board. A DDR RAM DIMM socket is
strategically placed in an easily accessible location on the controller board
for easy insertion of the DDR RAM DIMM module.
1.2.3 Controller Module Interfaces
All external interfaces that connect to external devices are located on the
controller module rear panel shown below. The interfaces are listed below.
Figure 1-7: Controller Module Interfaces – 2-port version
ƒ
Host ports: Four (4) Gigabit Ethernet host ports (simulated and
indicated as CH0 to CH3 in the diagram shown above) connect the
SecurStor subsystem to the networked iSCSI initiators through RJ45 connectors.
ƒ
COM port: The controller module comes with two (2) COM ports.
The serial ports are used for local access to the firmware embedded
configuration utility and the connection to a UPS device.
ƒ
LED indicators: Six (6) LED indicators illustrate the system
statuses for system monitoring. Please see Chapter 3 for more
information.
ƒ
Ejection Levers: Two (2) ejection levers located on the sides of
the controller ensure that the back-end connectors are properly
seated in the module slot and properly mated with the backplane.
ƒ
Management LAN Port: Another 10/100BaseT Ethernet port
connects the subsystem to a management computer. Available
management interfaces include: telnet, Java-based RAIDWatch
manager, or the web-based manager invoked by an http console.
ƒ
Restore Default LED and button: The push button and LED are
used to restore firmware defaults in cases when upgrading
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SecurStor 16i Installation and Hardware Reference Manual
firmware or if an administrator forgets system password. For more
details, please refer to Chapter 3.
1.2.4 DIMM Module
The controller module comes with a preinstalled 512MB capacity or above
DDR RAM DIMM module and the allocable size can reach 2GB. The
memory socket is located on the side of the controller board.
1.2.5 BBU
An optional, separately purchased Li-ION battery backup unit (BBU)
module (see the diagram below) can sustain cache memory for days during
the event of power outage. The battery module comes with an EEPROM
that marks the installation date, and system administrators will be notified
when the one-year left expectancy is reached. Please refer to Section 2.6 for
installation instructions.
Figure 1-8: BBU Module
In accordance with international transportation regulations, the BBU module
is only charged to between 35% and 45% of its total capacity when shipped.
Therefore, when powering on the subsystem for the first time (see Section
4.4) the BBU will begin to charge its batteries to their full capacity. It
normally requires approximately twelve (12) hours for the battery to be fully
charged. If the battery is not fully charged after twelve (12) hours, there may
be a problem with the BBU module. You may re-install the battery; and if
the battery still shows problems with charging, contact your subsystem
vendor for a replacement. While the battery is being charged, the LED on
the BBU will start flashing. (See Chapter 3.2.6 for details on the LED
indicators.)
You can check battery’s charge level using the RAIDWatch software or the
embedded firmware utility.
1.2.6 Power Supply Units
The subsystem is equipped with two (2) redundant, hot-swappable, 530W
PSUs, which are installed into the rear section of the chassis. The PSU is
permanently mounted into a 2U (dual-level) bracket especially designed to
house both the PSU and a cooling module, which is mounted at the end of
the 2U bracket.
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Chapter 1 Introduction
NOTE:
Hot-swapping the PSU also removes the cooling module at the lower
slot.
As shown in Figure 1-9, each PSU comes with a power socket and a power
switch to turn the subsystem on and off. Two (2) embedded cooling fans
provide sufficient airflow. A single LED indicates the PSU status. When a
power supply failure occurs, the red LED lights come on. A rejection handle
at the rear of the PSU is especially designed to help properly install or
remove the module.
A screw hole on the ejection handle helps secure the PSU to the chassis.
Figure 1-9: PSU Module
Please refer to Appendix B for the technical information of the PSUs.
1.2.7 Cooling Modules
Two cooling modules are implemented within the rear sections of PSU
modules. (see Figure 1-10.) The cooling fans operate at two (2) fan speed
levels. When the subsystem operates normally, the cooling fans operate at
the lower speed. If a major component fails or when one of the temperature
thresholds is violated, the cooling fans automatically raise its rotation speed.
More technical information can be found in Appendix B.
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SecurStor 16i Installation and Hardware Reference Manual
Figure 1-10: Cooling Module
1.3
Subsystem Monitoring
The iSCSI RAID subsystem comes with a number of different monitoring methods
that provide you with continual updates on the operating statuses of the subsystem
and individual components. The following monitoring features are included:
1.3.1 I2C bus
The following subsystem elements are interfaced to the RAID controller
over a non-user-serviceable I2C bus:
•
Cooling modules
•
Module presence detection circuits
•
Temperature sensors (for detecting the temperature of the
backplane board and controller board)
1.3.2 LED Indicators
The following components come with LEDs to indicate the operating
statuses of individual components:
1-10
•
RAID controller
•
BBU module
•
Cooling modules (on PSU faceplates)
•
PSU modules (1 LED on each module)
•
Drive trays (2 LEDs on each tray)
Chapter 1 Introduction
1.3.3 Firmware (FW)
Firmware: The firmware is pre-installed software used to configure the
subsystem. The latest firmware functionalities include Task Scheduler,
Intelligent Drive Handling, and Media Scan. Media Scan handles low
quality drives in both the degraded mode and during the rebuild process.
Maintenance tasks will then be performed on an entire array or specific hard
drives. Various options are user-configurable such as priority, start time, and
execution intervals. For more information, please refer to the Generic
Operation Manual in the product utility CD.
1.3.4 Audible Alarms
The subsystem comes with an audible alarm that is triggered when a
component fails or when the pre-configured temperature or voltage
thresholds are exceeded. Whenever you hear an audible alarm, it is
imperative that you determine the cause and rectify the problem
immediately.
Event notification messages indicate the completion or status of array
configuration tasks and are always accompanied by two (2) or three (3)
successive and prolonged beeps.
WARNING!
Failing to respond when an audible alarm is heard can lead to
permanent damage to the subsystem. When an audible alarm is
heard, rectify the problem as soon as possible.
1.4 Hot-swappable Components
1.4.1 Hot-swap Capabilities
The subsystem comes with a number of hot-swappable components. A hot-swap
component is one that can be exchanged while the subsystem is still online without
affecting the operational integrity of the subsystem. These components should only
be removed from the subsystem when they are being replaced. At no other time
should these components be removed from the subsystem.
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SecurStor 16i Installation and Hardware Reference Manual
1.4.2 Components
The following components are hot-swappable:
•
Power supply units (PSUs)
•
BBU module
•
Hard disk drives
1.4.3 Normalized Airflow
Proper cooling is referred to as “normalized” airflow. Normalized airflow ensures the
sufficient cooling within the subsystem and is only attained when all components are
properly installed. Therefore, a failed component should only be removed when a
replacement is available. If a failed component is removed but not replaced, airflow
will disrupted and permanent damage to the subsystem can result.
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Chapter 1 Introduction
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1-13
Chapter 2
Hardware Installation
2.1 Introduction
This chapter gives detailed instructions on how to install the subsystem. When installing the
subsystem, it is necessary to mount the chassis into a rack cabinet and to install hard drives
and drive trays. Installation into a rack or cabinet should occur before the hard drives or drive
trays are installed into the subsystem.
CAUTION!
Please note that the installation instructions described in this manual
should be carefully followed to prevent any difficulties and damage to
your subsystem.
2.2 Safety Precautions
1.
Disconnect the power cords if the need should arise for cleaning the
chassis. Do not use liquid or sprayed detergent for cleaning. Use a
lightly moistened clothe for cleaning.
2.
Be sure the correct power range (100-120 or 220-240VAC) is supplied
by your rack cabinet or power outlet. It is highly recommended to
connect two different power supplies to separate power sources; e.g.,
one to a power outlet, and the other to a UPS system.
3.
Thermal notice: All drive trays (even if they do not contain a hard
drive) must be installed into the enclosure. Leaving a drive bay or
module slot open will severely affect the airflow efficiency within the
enclosure, and will consequently lead to system overheating. Keep a
faulty module in place until you have a replacement unit and you are
ready to replace it.
4.
Rack-mounting: The subsystem is intended to be rack-mounted.
Following concerns should be heeded when mounting the enclosure
into a rack cabinet:
a.
Hardware Installation
An enclosure without disk drives can weigh over 60 pounds.
Two (2) people are required to install or relocate the
subsystem. Drives should be removed from the enclosure
before moving the subsystem.
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SecurStor 16i Installation and Hardware Reference Manual
b.
The subsystem is designed to operate in an environment where
the ambient temperature around the chassis must not exceed
104°F.
c.
The openings on the enclosure are for air circulation and hence
the ventilation openings should never be obstructed.
d.
Proper grounding, over-current protection, and stability
features should be provided with the rack cabinet into which
the subsystem is mounted.
5.
Operate the subsystem in an environment with low humidity.
6.
Make sure the voltage of the power source is within the rated values as
indicated by the label attached to the power supplies before connecting
the subsystem to the power source. You may also refer to the Appendix
A of this manual for technical details.
7.
Airflow considerations: The subsystem requires an airflow clearance
especially on the front and the rear sides. For proper ventilation, a
minimum of 1 inch is required between the front of the enclosure and
rack cover; a minimum of 2 inches is required between the enclosure
and end of the rack cabinet.
8.
Handle the system modules by the retention screws, eject levers, or the
modules’ metal frames/faceplates only. Avoid touching the PCB boards
and connector pins.
9.
None of the covers or replaceable modules should be removed in order
to maintain compliance with safety, emission, or thermal requirements.
10. If the subsystem is going to be left unused for a long time, disconnect
the subsystem from mains to avoid damages by transient over-voltage.
11. Never open the subsystem top cover, unless directed to do so by EMD
Support.
12. Always secure every enclosure module by its retaining screws or make
sure it is held in place by its latches or hand screws.
13. Always make sure the subsystem has a safe electrical earth connection
via power cords or chassis ground by the rack cabinet.
14. Be sure that the rack cabinet in which the subsystem chassis is to be
installed provides sufficient ventilation channels and airflow circulation
around the subsystem.
15. If it is necessary to transport the subsystem, repackage all disk drives
separately.
16. If one of the following situations arises, get the enclosure checked by
service personnel:
2-2
a.
Any of the power cords or plugs is damaged.
b.
Liquid has penetrated into the subsystem.
c.
The enclosure has been exposed to moisture.
Chapter 2 Hardware Installation
d.
The subsystem does not work well or you cannot get it work
according to this manual.
e.
The subsystem has dropped and been damaged.
f.
The subsystem shows obvious signs of breakage.
2.3 General Installation Procedure
Following all the instructions provided below can save subsystem installation time. Detailed,
illustrated instructions for each component are given in the following sections.
CAUTION!
To ensure that your system is correctly installed, please follow the steps
outlined below. If you follow these steps, installation will be fast and
efficient. If you do not follow these steps, you may accidentally install the
hardware incorrectly.
Step 1.
Unpack: Unpack the subsystem.
Step 2.
Install an optional BBU: If an optional BBU has been
separately purchased, it should be installed prior to
operating the subsystem. (See Section 0)
Step 3.
Rack/Cabinet installation: If the subsystem is going to be
installed in a rack or cabinet, it should be installed prior to
installing the hard drives. Installing the subsystem into a
rack or cabinet requires at least two (2) people. (See
Section 0)
Step 4.
Install drive trays: After the hard drives have been
installed into the drive trays, the drive trays must be
installed into the enclosure itself.
Step 5.
Cable connection: Use the power cords that came with the
subsystem to connect the subsystem to the main power
source. Use self-purchased RJ-45 cables (see Chapter 4 for
more details) to connect host ports to the network or
external devices.
Step 6.
Power up: Once the components have been properly
installed and all cables are properly connected, you can
power up the subsystem and configure the RAID array.
(See Section 4.4)
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SecurStor 16i Installation and Hardware Reference Manual
2.3.1
Installation Procedure Flowchart
Figure 2-1 shows a flowchart of the installation procedure. As you complete
each step, check off the “Done” box on the right. Please use this flowchart
in conjunction with the instructions that follow.
Figure 2-1: Installation Procedure Flowchart
2.4 Unpacking the Subsystem
Unpack the unit, drives, and accessories.
Accessory items include an RS-232C audio jack cable, power cords, a null modem, and a
product utility CD containing the RAIDWatch program.
2.5 Installation Overview
You must install the following components:
ƒ
ƒ
2-4
Hard drives (SATA-I or SATA-II disk drives)
BBU module (if ordered)
Chapter 2 Hardware Installation
2.6 BBU Installation
2.6.1 BBU Module Installation Overview
The BBU module is an optional item that can sustain cache memory in the event of a
power failure or in the unlikely event of failing both PSUs. A BBU is highly
recommended. The optional BBU provides additional data security and helps
minimize the loss of data during power shutdowns.
The BBU module is inserted into a module slot on the controller module. The BBU
module is secured with two (2) retention screws. When shipped, the BBU module
slot is covered with a dummy plate that must first be removed.
2.6.2
BBU Warnings and Precautions
ƒ
Do not use nor leave the BBU near a heat source. Heat can melt the
insulation and damage other safety features of battery cells, possibly
leading it to acid leak and result in flames or explosion.
ƒ
Do not immerse the BBU in water nor allow it to get wet. Its protective
features can be damaged. Abnormal chemical reactions may occur,
possibly causing functional defects, acid leak, and other hazardous
results.
ƒ
Do not disassemble or modify the BBU. If disassembled, the BBU
could leak acid, overheat, emit smoke, burst and/or ignite.
ƒ
Do not pierce the BBU with a sharp object, strike it with a hammer, step
on it, or throw it. These actions could damage or deform it, internal
short-circuiting can occur, possibly causing functional defects, acid
leak, and other hazardous results.
ƒ
If the BBU leaks, gives off a bad odor, generates heat, becomes
discolored or deformed, or in any way appears abnormal during use,
recharging or storage, immediately remove it from the subsystem and
stop using it. If this is discovered when you first use the BBU, return it
to Infortrend or your system vendor.
2.6.3 Installation Procedure
To install a BBU into the controller module, please follow these steps:
Step 1.
Prior to installing the BBU module, power off the
subsystem or restart the subsystem after installation. For
power off procedures, please refer to Section 4.4.
Step 2.
Use a screwdriver to loosen the two (2) retention screws
located on both sides of the dummy plate. (See Figure 22)
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SecurStor 16i Installation and Hardware Reference Manual
Figure 2-2: Loosening the BBU Retention Screws
Step 3.
Once the retention screws are loosened, gently retrieve the
dummy plate out of the enclosure. (See Figure 2-3)
Figure 2-3: Removing the BBU Slot Dummy Plate
NOTE:
It may be difficult to remove the dummy plate as it is embedded in the
subsystem chassis. If you are unable to dislodge the sheet, wedge the
head of a flat-head screwdriver between the metal sheet and the chassis
and then gently nudge the metal sheet out of the chassis.
2-6
Step 4.
Install the BBU module. Align the BBU module with the
BBU module slot and gently insert the BBU module until
the back of the BBU module reaches the end of the slot.
Use slightly more force so that the back-end connector can
mate with the backplane.
Step 5.
Secure the BBU module to the chassis. Fasten the two (2)
retention screws on the BBU module to secure the BBU
module to the chassis. (See Figure 2-4)
Chapter 2 Hardware Installation
Figure 2-4: Installing the BBU Module
2.7 Hard Drive Installation
2.7.1 Hard Drive Installation Prerequisites
CAUTION!
The hard drives and drive trays should only be installed into the
subsystem after the subsystem has been mounted into a rack cabinet. If
the hard drives are installed first, the subsystem will be too heavy to
handle and the possible impact during installation may damage your
drives.
WARNING!
Handle hard drives with extreme care. Hard drives are very delicate.
Dropping a drive against a hard surface (even from a short distance)
and hitting or touching the circuits on the drives with your tools may
cause damage to the drives.
WARNING!
All drive trays must be installed into the enclosure even if they do not
contain a hard drive. If the trays are not installed into the enclosure, the
ventilation airflow will not be normalized and the subsystem will overheat.
2.7.2 Hard Drive/Drive Tray Installation
Step 1.
Make sure the rotary bezel lock is in the unlocked
position, i.e., the groove on its face is in a horizontal
orientation. If the groove is in a vertical position, as shown
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Formatted: Bullets and Numbering
SecurStor 16i Installation and Hardware Reference Manual
in Figure 2-5, then the bezel lock is locked and the front
flap on the drive tray cannot be opened.
Figure 2-5: Front View of an Individual Drive Tray
Step 2.
Open the front flap on the drive tray. (See Figure 2-6)
Push the release button on the drive tray. The front flap
will spring open.
Figure 2-6: Drive Tray Release Button
Step 3.
Align the drive tray with the slot in which you wish to
insert it making sure that it is properly aligned within the
drive bay. Gently slide it in until the drive tray reach the
end of drive bay. This should be done smoothly and
gently. (See Figure 2-7)
Figure 2-7: Installing a Drive Tray
Step 4.
2-8
Close the front flap on the drive tray. Make sure the front
flap is closed properly to ensure that the SATA connector
at the back of the drive tray is properly mated with the
Chapter 2 Hardware Installation
corresponding connector on the backplane board. If the
front flap is not closed properly, the connection between
the hard drive and the subsystem may come loose and
mysterious drive signals may result.
Step 5.
Lock the flap into place by turning the key-lock until the
groove on its face is pointing down (vertical orientation).
(See Figure 2-8)
Figure 2-8: Drive Tray Key-lock Rotation
Step 6.
Once the drive bays are populated and the subsystem
powered on, the RAID controller will automatically spin
up the hard drives and recognize their presence.
2.8 Rack/Cabinet Installation
The subsystem is designed to fit into a variety of 19-inch rack cabinets or
racks. Make sure you have an appropriate site location and cables prepared
with adequate lengths to connect to mains and other devices.
The subsystem should be installed in the rack or cabinet before the hard
drives and the drive trays are installed. If the drive trays with the associated
hard drives are installed, the subsystem will be too heavy to mount into a
rack or cabinet. When installing the subsystem into a rack or cabinet it is
advisable that two (2) people assist in the mounting process.
For details on the use of the rackmount rails, please refer to the installation
instructions that came with them.
2-9
Chapter 3
Subsystem Monitoring
Formatted: Bullets and Numbering
3.1 Subsystem Monitoring Overview
The SecurStor 16i subsystem is equipped with a variety of self-monitoring features that help
to keep subsystem managers informed of the subsystem operational statuses. These
monitoring features provide vital feedback to help you maintain the operational integrity of
the subsystem. Prompt response to warnings and subsystem component failure notifications
will ensure data integrity and help ensure the longevity of the subsystem.
Self-monitoring features include:
ƒ
Firmware (FW): The RAID controller in the subsystem is managed by
preinstalled FW, which can be accessed using a PC hyper-terminal connected
through the COM1 serial port. Device status information can be obtained from
the FW-embedded configuration utility. The FW is fully described in the Manual
that came with your system. Please refer to this manual for further information.
ƒ
RAIDWatch: RAIDWatch is a fully integrated, Graphical User Interface (GUI)
installed with the firmware, which can be used to monitor and maintain the
subsystem locally or remotely over TCP/IP network. Connection to RAIDWatch
is made using the 10/100BaseT management port.
Formatted: Bullets and Numbering
The RAIDWatch Panel View can be customized to display a graphical representation of the
subsystem components in the content panel of the RAIDWatch screen. Panel View allows you
to quickly determine the operational status of critical components. Please refer to the
RAIDWatch User’s Manual for further details.
NOTE:
Detailed installation instructions for RAIDWatch Manager are given in the
RAIDWatch User’s Manual.
ƒ
LEDs: Device-status-indicating LEDs are located on all important modules.
These LEDs inform you of the integrity of a given component or a
host/management link. You should become familiar with the various LEDs and
be aware of their functions. (See Section 0)
ƒ
Audible alarm: An audible alarm is present on the subsystem controller board
and will be triggered if any of a number of threatening events occurred. These
events usually jeopardize the functional and operational integrity of the
controller board and must be heeded at all times. Events such as a breaching of
the temperature threshold will trigger the alarm. If a subsystem manager is
present, the manager should use the RS-232 terminal console to determine the
cause of the alarm and take appropriate corrective measures. (See Section 0)
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Formatted: Bullets and Numbering
SecurStor 16i Installation and Hardware Reference Manual
ƒ
Inter-Integrated Circuit (I2C): The I2C serial bus is used to connect various
temperature sensors and presence detection circuits within the chassis.
Subsystem monitoring is a necessary part of subsystem management. If failure events or other
disruptive events are detected and reported, the subsystem managers must take appropriate
actions to rectify the problem. Failure to act in a properly specified manner to a system event
(like overheating) can cause severe and permanent damage to the subsystem.
3.2 Status-indicating LEDs
Formatted: Bullets and Numbering
3.2.1 Brief Overview of the LEDs
The following devices all come with LEDs that inform subsystem managers about
the operational status of the component.
Component
LEDs per Unit
Total LEDs
Definition
Drive Trays
2
32
See Section 0
Controller
Module
7
7
See Section 0
Ethernet
Ports
2
10 (5 ports)
BBU Module
(if BBU is
installed)
1
1
See Section 0
PSU Module
1
2
See Section 0
Cooling
Module
2
4
See Section 0
Table 3-1: LED Distribution
LED definitions are given in the following sections.
Formatted: Bullets and Numbering
3.2.2 Drive Tray LEDs
Two (2) LED indicators are located on the right side of each drive tray. (See Figure
3-11) Refer to Table 3-2 for the LED definitions. When notified by a drive failure
message, you should check the drive tray indicators to find the correct location of the
failed drive. Replacing the wrong drive can fail two members of a logical array
(RAID 3/5) and thus destroy data in the array.
3-2
Chapter 3 Subsystem Monitoring
Figure 3-11: Drive Tray LEDs
Name
Color
Status
FLASHING indicates data is being written
to or read from the drive. The drive is busy.
Drive Busy
Blue
OFF indicates that there is no activity on the
disk drive.
Power Status
Green/
Red
GREEN indicates that the drive bay is
populated.
RED indicates that the disk drive has failed.
Table 3-2: Drive Tray LED Definitions
Formatted: Bullets and Numbering
3.2.3 Controller Module LEDs
The LEDs on the rear-facing faceplate of the RAID controller are shown in Figure 312. The LEDs on the controller’s faceplate that can be accessed from the rear of the
enclosure are numbered from 1 to 6. The definitions are shown below.
Figure 3-12: Controller Module LEDs
Name
Ctlr Status
Color
Status
Green/
Amber
Green indicates that the RAID subsystem is
operating healthily.
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SecurStor 16i Installation and Hardware Reference Manual
Amber indicates that a component failure
has occurred, or inappropriate RAID
configurations have caused system faults.
C_Dirty
Amber
ON indicates that there are certain amounts
of cached data held in memory.
OFF indicates that the cache is clean.
Temp.
Amber
ON
indicates
that
the
detected
CPU/board/chassis temperature has exceeded
the higher temperature threshold.
OFF indicates that the detected temperature
reading is within the preset safe range.
BBU Link
Green
ON indicates the presence of a BBU backup
module.
Hst Bsy
Green
Rapidly Blinking to indicate traffic on the
host bus.
Drv Bsy
Green
Rapidly Blinking to indicate traffic on the
drive channels.
Restore
Default
Green
Lit Green to indicate the RAID
configuration default has been successfully
restored. The LED state will be invalidated
after a few seconds.
Note that restoring default will not affect the
existing RAID configurations of disk drives.
Table 3-3: Controller LED Definitions
Restore NVRAM Defaults – a Push Button
CAUTION!
The Restore NVRAM Default push button is a function that carries some
risks. Firmware restoration will not destroy the existing logical drive
configurations; however, if the existing logical drives cannot be
adequately associated with host ID/LUNs after firmware default
restoration, data loss or inconsistencies might occur.
There is a non-latch type push button accessed through a round opening underneath
the Restore Default LED.
1.
3-4
Before pressing this button to restore firmware defaults, it is highly advised
to make a list of the existing ID/LUN mapping information. You will need
the list for restoring ID/LUN mapping after restoring defaults. Default
restoration will erase the ID/LUN mapping associations (e.g., which logical
drive is associated with which host ID/LUN), and it is necessary to restore
Chapter 3 Subsystem Monitoring
the host ID/LUN mapping after firmware default restoration in order to
access data on the previously configured arrays.
2.
Some of the latest firmware updates may be incompatible with the firmware
currently running on your subsystem. These updates may require restoring
firmware defaults before firmware upgrade can actually take place. Before
using the button, it is highly advised to practice the following:
ƒ
ƒ
ƒ
Stop host I/Os,
Backup your data,
Make a list of host ID/LUN mapping information for future
references.
You may also jot down the configured parameters such as the performance
preferences, specific stripe sizes, etc.
3.
The third condition that requires restoring defaults is when an administrator
forgets the password configured to control the access to a RAID subsystem.
Before pushing this button, also practice the steps listed above. You can
access array information even without a password.
How to use the button?
After the subsystem is powered down, you can use a straighten paper-clip to
press the button. Press and hold down the button, power on the subsystem,
and wait for the LED to light up to indicate system defaults have already
been restored.
3.2.4 Ethernet Port LEDs
4.
GbE host ports, which provide different connection speeds, are located on
the controller faceplate. Shielded or non-shielded, Cat5e straight-through
Ethernet cables can be used to connect the RJ-45 ports to the network. Two
(2) LEDs located on each Ethernet port indicate the Ethernet connection
speed and link status. See the diagram below for the locations of the two (2)
LED indicators. Refer to Table 3-5 for the LED definitions.
Figure 3-13: GbE LAN Indicators
Name
Speed
Color
Green
Status
ON indicates currently connected with GbE
speed, OFF means connected with 10/100
speed.
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SecurStor 16i Installation and Hardware Reference Manual
LAN Activity
Green
ON for linked.
BLINKING indicates active transmission.
Table 3-4: GbE LAN Port LED Definitions
Figure 3-14: 10/100BaseT Management Port Indicators
Name
Color
Status
Link Status
Green
ON indicates currently connected to a
LAN.
LAN Activity
Green
BLINKING indicates active transmission.
Table 3-5: 10/100BaseT Management Port LED Definitions
Formatted: Bullets and Numbering
3.2.5 BBU Module LED
The BBU module has an LED on its faceplate. (See Figure 3-15) The function is the
same as the similar LED on the controller module. The LED is off when the BBU is
functioning normally and is able to sustain the cache memory. The LED flashes to
indicate the BBU is charging. If the LED is illuminating amber, the BBU may have
lost its ability to hold electrical charge. You should then contact your vendor to
verify the problem.
Figure 3-15: BBU Module LED
Formatted: Bullets and Numbering
3.2.6
PSU LEDs
Each PSU comes with a single LED at the back (see Figure 3-16), located close to
the power switch that turns on the subsystem. This LED indicates the operational
status of the PSU module. Please refer to the PSU LED definitions shown in Table 36.
3-6
Chapter 3 Subsystem Monitoring
Figure 3-16: PSU Module LED
Color
Status
Steadily
Blinking
Green
The power supply has not been turned on. The PSU
module LED will blink when the subsystem is
connected to a power source but not yet turned on.
Static Green
The PSU is operating normally and experiencing no
problem.
Static Red
The PSU has failed and is unable to provide power to
the subsystem.
OFF
The PSU is not turned on and the power cord is
disconnected.
Table 3-6: PSU Module LED Definitions
Formatted: Bullets and Numbering
3.2.7
Cooling Module LEDs
Each individual cooling fan within the cooling module has one (1) red LED on the
PSU module. The LED corresponds to the single fan in the cooling module. (See
Figure 3-17) When the LED is on, it indicates the fan has failed. When the LED is
off, it indicates the fan is functioning properly.
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SecurStor 16i Installation and Hardware Reference Manual
Figure 3-17: Cooling Module LEDs and Cooling Fan Locations
The subsystem has a novel approach to stabilizing the temperature within the
subsystem: When the intelligent sensors on the backplane detect elevated
temperature, such as high ambient temperature or the failure of any cooling or PSU
module, the system will turn the cooling fans to high speed to extract more heat.
Once the ambient temperature cools down to normal or the failed modules have been
replaced, the cooling fans will return to low speed.
Formatted: Bullets and Numbering
3.3 Audible Alarm
Different controller environmental and operational parameters (like temperature, etc.) have
been assigned a range of values between which they can fluctuate. If either the upper or lower
thresholds are exceeded, an audible alarm will automatically be triggered. The alarm will also
be triggered when an active component on the subsystem fails. If the SecurStor 16i manager is
onsite and hears an alarm, the manager must read the error message on the PC terminal or
RAIDWatch screen to determine what has triggered the alarm. After determining what has
occurred, the SecurStor 16i manager must take appropriate actions to rectify the problem.
WARNING!
If an alarm is triggered it is necessary for you to determine the problem.
If the audible alarm is ignored and the problem is not rectified,
unexpected damage may occur.
Formatted: Bullets and Numbering
3.3.1 Default Threshold Values
Table 3-7 shows the default threshold values for the EMD SecurStor 16i
subsystem. If any of these values are surpassed, the alarm will sound:
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Chapter 3 Subsystem Monitoring
Upper Threshold
Lower Threshold
+3.3V
+3.6V
+2.9V
+5V
+5.5V
+4.5V
+12V
+13.2V
+10.8V
CPU Temperature
90ºC
5ºC
Controller Board
Temperature
80ºC
5ºC
Enclosure Ambient
Temperature
40ºC
0ºC
Table 3-7: Default Threshold Values
Formatted: Bullets and Numbering
3.3.2 Failed Devices
If any of the following components fails, the audible alarm will be triggered:
•
RAID controller module
•
Cooling fan modules
•
PSU modules
•
BBU module
•
Hard disk drives
NOTE:
When temperature exceeds a preset threshold, the controller’s charger
circuits will stop charging. You will then receive a message that says
“Thermal Shutdown/Enter Sleep Mode.” When the temperature falls
back within normal range, the battery will resume charging.
3.4 I2C Monitoring
The operating status of PSU and cooling fan modules are collected through an I2C serial bus.
If either of these modules fails, the failure will be detected and you will be notified through
the various methods described above.
3-9
Deleted: ¶
Chapter 4
Subsystem Connection and Operation
4.1 Connection Overview
4.1.1
Cabling
Following are the requirements on the type of cables used to connect the subsystem’s iSCSI host
ports:
1.
Gigabit Ethernet network cables.
2.
Cat5e STP type cables or better performance types (important for meeting the
requirements imposed by emission standards).
3.
Straight-through Ethernet cables with RJ-45 plugs.
4.
Use of cross-over cables can also automatically be detected and re-routed for a valid
connection.
Connection:
1.
Directly to iSCSI initiators or through Gigabit Ethernet switches.
2.
To servers equipped with an iSCSI HBA, and then to client stations with an Ethernet
NIC or iSCSI HBA.
3.
The subsystem presents its logical capacity volumes through SCSI-like IDs and LUNs.
These RAID volumes then appear as iSCSI targets through the network.
NOTE:
Even though iSCSI initiator software is a cost-effective way of building iSCSI SAN,
software initiator adds additional workload to the server processor. It is recommended
to apply iSCSI HBAs that come with TCP/IP offload engines in order to reduce
overhead.
System Connection and Operation
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SecurStor16i Installation and Hardware Reference Manual
WARNING!
All cables must be handled with care. Make sure Ethernet cables do not run parallel
with power cords. To prevent interference within a rack system, the cable routing path
must be carefully planned and they must not be bent.
4.1.2
Network Topologies
The iSCSI host ports connect to Ethernet network devices and iSCSI initiators that
comply with the IETF iSCSI standard (RFC 3720). Network connection of the EMD SS16i
subsystem’s iSCSI ports is flexible. The use of network connecting devices, subnet, Name
Servers, or iSCSI management software can vary from case to case. In the following sections,
configuration diagrams will be provided to illustrate the possible uses of the EMD SS16i
subsystem in an iSCSI network.
Note that these configurations only recommend but do not intend to impose limitations on the use
of subnet settings or networking paths to servers.
4.1.3
Points of Failure
The primary concern for configuring host-side topologies is that points of failure should be
avoided. It is therefore preferred that the host side be connected to two (2) HBAs and better not the
onboard Ethernet. Data flow and access management should therefore be implemented to avoid
access contention. MPIO software can be implemented in order to discover a capacity volume
through an alternate data link in the event of cabling failure.
4.2 Host Connection Topologies
4.2.1
Sample Topology – Direct-Attached, Dual-path Connection
In the configuration shown in Figure 4-1, one (1) EMD SecurStor16i subsystem is connected to
two (2) servers. These servers are equipped with iSCSI HBAs and using the subsystem as the
shared storage. Multiple arrays or logical partitions can be created and made available separately
through different ID/LUNs on the host ports.
Note the following with the configuration as diagrammed below:
4-2
1.
The RAIDWatch management software accesses a subsystem through its IP address. A
management station running RAIDWatch can access the array through the 10/100BaseT
management port.
2.
Configuration of each port connection into a subnet isolates each iSCSI host link, decreases
overheads, and eliminates the impact of link failure.
Chapter 4: Subsystem Connection and Operation
3.
Different storage volumes are made available on host ports. Different volumes can be
separately optimized for different I/O characteristics.
Figure 4-1: Sample Topology: Multiple Servers Each with Dual Connections
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4.2.2
iSCSI Topology and Host LUN Mapping:
Configuration Details:
4-4
1.
A logical drive can be associated with several SCSI IDs on separate channels making it a
RAID volume accessed through different data paths. The default ID on every host channel is
ID#0. More can be created if the need arises.
2.
You can manually include or exclude specific iSCSI initiators from the access list to you
iSCSI arrays. A number of access conditioning factors can be included: IQN, NetMask value,
CHAP, and IP addresses can be associated with a RAID array (a logical drive). In this way,
only the authorized host adapters can access your arrays.
3.
In the sample below, 2 logical drives are created each out of 8 member drives. Depending on
your demands for logical capacity volumes, specific array parameters such as optimization
modes, spare drives, RAID level, and stripe size/width, can be specified when creating logical
drives.
4.
Subnet can be created to reduce overheads and provide access security. LAN configuration is
beyond the scope of this hardware manual.
5.
Multiple arrays or multiple partitions can be created and made available separately through
different ID/LUNs on the host ports. The RAID volumes appear as shared storage over the
Ethernet network.
6.
To ensure the optimal performance, make sure you connect the iSCSI RAID to a high speed
Gigabit Ethernet network.
Chapter 4: Subsystem Connection and Operation
Figure 4 - 2: Sample Topology: Connection and Host LUN Mapping
4.3 Power On
Once all the components have been installed in the EMD subsystem, the iSCSI ports have been connected
to the network, power on the network devices, the subsystem, and then power on the servers/iSCSI
initiators.
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4.3.1
Check List
BEFORE powering on the EMD subsystem, please check the following:
4.3.2
…
Memory Modules – Memory modules have been correctly installed on the controller
boards. You may skip this if you have not changed the pre-installed module.
…
BBU Modules – If used, that the BBU module has been installed correctly.
…
Hard Drives – Hard drives have been correctly installed on the drive trays.
…
Drive Trays – ALL the drive trays, whether or not they have a hard drive, have been
installed into the subsystem.
…
Cable Connections – The iSCSI ports on the subsystem have been correctly
connected to the initiators or the Ethernet network.
…
Power Cords – The power cords have been connected to the PSU modules on the
subsystem and plugged into main power.
…
Ambient Temperature – All the subsystem components have been acclimated to the
surrounding temperature.
Power On Procedure
When powering on the EMD subsystem, please follow these steps.
Step 1.
Power on the network connection devices.
These devices include the Ethernet switches, iSCSI HBAs, and any
other such devices that have been connected to the EMD SS16i
subsystem. Please refer to the documentation that came with your
network device to see the power on procedure.
Step 2.
Power on the EMD subsystem.
The EMD subsystem should only be powered on after all the network
connection devices have been powered on. Consult your network
administrators for proper network configurations. The power on
procedure for the EMD subsystem is described below.
Step 3.
Power on the initiators.
The servers or iSCSI initiators should be the last devices that are turned
on. Please refer to the documentation that came with your application
servers to see their own power on procedures.
4.3.3
Power On Enclosure
To power on the subsystem, turn on the two power switches located on the rear panel of the
subsystem. (See Figure 4-3) Each switch controls a single PSU; therefore make sure that both
switches are turned on. There is no limitation on which PSU should be powered on first.
4-6
Chapter 4: Subsystem Connection and Operation
Figure 4-3: Power Switches
CAUTION!
Although the PSUs are redundant and a single PSU can provide sufficient power to
the subsystem, it is advisable to turn both of the power switches on. If only one PSU is
operating and fails, system operation will be terminated.
4.3.4
Power On Status Check
Once the subsystem has been powered on, the status of the entire subsystem should be checked to
ensure that everything is running smoothly and that there are no complications or malfunctions.
…
Controller Module LEDs – The controller ready LED should flash green.
…
Drive Tray LEDs – The drive status LEDs (that contain hard drives) should all
lights blue.
…
Firmware and RAIDWatch – The overall status of the system may be checked
using the embedded firmware utility or the RAIDWatch GUI screen.
…
Audible Alarm - If any errors occur during the initialization process, the onboard
alarm will sound in a hastily repeated manner.
Drive tray LEDs should normally start flashing right after power-on, indicating the RAID
control unit is attempting to access the hard drives.
NOTE:
The subsystem has been designed to run continuously. Even if a component failure
occurs the fault can be corrected online.
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4.4 Power Off Procedure
To power down the EMD subsystem, please follow these steps:
NOTE:
When powering down the EMD subsystem, please ensure that no time-consuming
processes, like a “Logical Drive Parity Regeneration” or a “Media Scan,” are taking
place.
Step 1.
Stop I/O access to the system.
Stop all I/O accesses to the SS16i subsystem. Please refer to the related
documentation of your applications.
Step 2.
Flush the cache.
Locate the Cache_Dirty LED on the back of controller module to check if there
is data cached in the memory. Use the Shutdown Controller function to flush all
cached data. This prepares the RAID subsystem to be safely powered down.
Step 3.
Turn off the power.
Turn off the power. Once the RAID subsystem has been powered down, other
devices connected to the subsystem can be powered down.
4-8
Chapter 5
Subsystem Maintenance and Upgrading
5.1 Overview
5.1.1
Maintenance
Constant monitoring and maintenance of your SS16i subsystem will minimize subsystem
downtime and preserve the working integrity of the system for a longer period of time. If any of
the subsystem components fail, they must be replaced as soon as possible.
WARNING!
Do not remove a failed component from the subsystem until you have a replacement
on hand. If you remove a failed component without replacing it, the internal airflow
will be disrupted and the system will overheat causing damage to the subsystem.
All of the following components can be replaced in case of failure:
1.
Controller module – Section 0
2.
Memory module – Section 0
3.
BBU module - Section 0
4.
PSU modules – Section 5.5
5.
Cooling fan modules (bundled with PSU modules, not separately available) – Section 0
6.
Hard drives – Section 5.7
5.1.2 General Notes on Component Replacement
ƒ
With the exception of the RAID controller module, all of the components on the
SS16i subsystem, including the PSU modules (along with the cooling modules
within), and drive trays, are hot-swappable and can be replaced while the subsystem
is still in operation.
ƒ
Qualified engineers who are familiar with the SS16i subsystem should be the only
ones who make component replacements. If you are not familiar with the subsystem
and/or with RAID subsystem maintenance in general, it is strongly advised that you
refer subsystem maintenance to a suitably qualified maintenance engineer.
ƒ
Normalized airflow is directly dependent on the presence of all subsystem
components. Even if a subsystem component fails, it should not be removed from the
subsystem until a replacement is readily at hand and can be quickly installed.
Removing a subsystem component without replacing it can lead to permanent
subsystem damage.
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SecurStor 16i Installation and Hardware Reference Manual
ƒ
When replacing any hot-swappable component, caution should be taken to ensure
that the components are handled in an appropriate manner. Rough or improper
handling of components can lead to irreparable damage.
ƒ
When removing a RAID controller module from the subsystem, ensure that your
applications running on servers have been properly closed, users notified of the down
time, all cached writes conducted, etc. Ensure that power has been turned off and that
all precautionary measures, without exception, are adhered to. The controller board is
very sensitive and can be easily damaged.
WARNING!
When inserting a removable module, take heed that DO NOT USE EXCESSIVE
FORCE! Forcing or slamming a module can damage the connector pins either on the
module itself or on the backplane. Gently push the module until it reaches the end of
module slot. Feel the contact resistance and use slightly more force to ensure the
module connectors are correctly mated. If the module comes with rejection levers or
retention screws, use them to secure the module.
5.2 Replacing Controller Module Components
5.2.1 Overview
The controller module consists of the following components:
ƒ DIMM Module
The DIMM module can be replaced when a DIMM module
fails or if a larger capacity DIMM is required.
ƒ BBU
If the BBU has lost its ability to hold electric charge, replace it
with a certified module. With the new BBU that comes with
ASIC400 models, an EEPROM is implemented and that
system administrators will be notified by system events when
the approximate one-year life expectancy is reached.
WARNING!
5-2
1.
The BBU is hot-swappable and can be independently swapped from the
controller. However, the BBU is installed into a metal bracket on the
controller module. When the controller is removed, the BBU is also removed.
2.
It is recommended to remove the BBU from the chassis before handling the
controller because the BBU needs to discharge the charge built up from
supporting the cache memory. If you replace a DIMM module with supplied
voltage, damage may occur.
Chapter 5: Subsystem Maintenance and Upgrading
5.2.2 Notes on Controller Module Maintenance
ƒ The controller module contains a DIMM module for cache buffer. When replacing the
controller module, the DIMM module can be removed and used on the replacement
controller if they are known to be good.
ƒ When replacing the controller module, you must remember that the controller board is
one of the most sensitive components in the EMD SS16I subsystem. All previously
stipulated safety precautions (see Chapter 2) must be strictly adhered to. Failure to
adhere to these precautions can result in permanent damage, resulting in timely delays.
ƒ For your own safety and that of the subsystem, make sure that no power is being
supplied to the system prior to replacing the controller module.
5.2.3 Removing the Controller Module
To remove the controller module:
Step 1.
Prepare a clean, static-free work pad or container into which to
place the controller that will be removed from the chassis.
Step 2.
Make sure there is no data access to the subsystem to avoid losing
data. Stop all I/O accesses to the subsystem and make sure all cached
writes have been distributed to disk drives.
Step 3.
Power off the subsystem. If possible, power off the subsystem in the
way described in Chapter 4. Be sure to flush all cached data before
powering off the subsystem. If it is not possible to do this turn off
both PSU modules and disconnect the power cords.
Step 4.
Disconnect all cables that are connected to the controller module you
wish to replace. These include the Ethernet cables connected to the
network, and any cable connected to the RS-232C audio jack
connector.
Step 5.
Remove the BBU module if one has been installed. Loosen the BBU
module’s retention screws and then retrieve it from the chassis.
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SecurStor 16i Installation and Hardware Reference Manual
Figure 5-1: Loosening the Retention Screws from the BBU Module
Step 6.
Loosen the retention screws from controller. Use a medium-size
Phillips screwdriver to remove the screws underneath each of the
ejection levers. Keep the screws for future use.
Figure 5-2: Loosening the Retention Screws from the Controller Module
5-4
Step 7.
Disconnect all cables from the controller module. These include the
cables connecting to host or cascaded subsystems, and any cables
connecting the COM ports.
Step 8.
Remove the controller module by pressing down the two ejection
levers. The controller will automatically be eased out of the module
bay. Gently pull the controller module out of the subsystem with one
hand underneath to support the weight of the module.
Chapter 5: Subsystem Maintenance and Upgrading
Figure 5-3: Removing the Controller Module from Chassis
5.2.4 Replacing the Controller Module
If the controller module has failed, replace a failed controller with a replacement from your
vendor:
Step 1.
Remove the failed controller. (See Section 0) If the DIMM module is
undamaged it can be removed (See Section 0) and reused on the new
controller module.
Step 2.
Install a DIMM module on the new controller module. (See Section
0)
Step 3.
Insert the controller module. Align the controller module with the
controller module bay at the rear of the subsystem, making sure that
the levers are down. Gently slide the controller module in.
Step 4.
Secure the connection. Once the controller reaches the end and you
feel the contact resistance, you can life up the levers on the sides. The
levers will ensure that the back-end connectors are properly mated.
Step 5.
Fasten the hand screws. Once fully inserted secure the controller
module to the chassis by fastening the retention screws through the
holes underneath the ejection lever.
Step 6.
Re-attach all the cables that you previously removed. These include
the cables that connect to the local network or iSCSI initiators that
were previously attached to the iSCSI ports, and any cable that was
attached to the RS-232C audio jack connector.
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SecurStor 16i Installation and Hardware Reference Manual
Step 7.
Power up the subsystem.
5.3 Replacing or Upgrading Memory Modules
5.3.1 Memory Module Installation Overview
ƒ
The subsystem comes with a pre-installed 512MB (or above) DDR RAM DIMM
module. The controller supports a memory module up to 2GB in size. If DDR
RAM DIMM modules with a different size need to be used or the original
memory module is damaged in some way, the pre-installed module can be
removed and a replacement installed. Replacement and installation instructions
are described fully below.
ƒ
A DIMM socket is located on the controller main circuit board. The controller
board is a sensitive component and must be treated with care.
WARNING!
The controller board in the controller module is a sensitive item. Please ensure that all
anti-static precautions stipulated above are strictly adhered to. Only qualified
engineers should replace the DIMM module.
5.3.2 Selecting the Memory Modules
If the memory module on the SS16i controller module is going to be replaced, the following
factors must be considered when purchasing replacement DIMM modules:
5-6
ƒ
Purchasing a DIMM module: To avoid the compatibility issues, it is
recommended to contact EMD for an updated list of compatible DIMM
modules. We provide tested modules from reliable vendors with reliable chips.
ƒ
DDR RAM DIMM modules supported: The subsystem supports 184-pin,
registered, ECC-capable DDR RAM DIMM modules with memory capacities
ranging from 512MB to 2GB.
ƒ
Installation considerations: When installing the DIMM module, it is necessary
to remove the controller module. The controller board is more susceptible to
damage than other components and must therefore be handled with extreme
care. ALL anti-static precautions specified in Section 2.3 must be strictly
adhered to.
ƒ
Secure installation: When replacing the DIMM module, make sure that the new
DIMM module is firmly in place prior to installing the controller module. If the
DIMM module is not firmly in place, the subsystem will not run and the
controller will need to be removed and the DIMM module correctly installed.
Chapter 5: Subsystem Maintenance and Upgrading
5.3.3 DIMM Module Installation
WARNING!
The pre-installed modules must be removed prior to installing new modules. Do this
with care. Sensitive components can be damaged during the process.
Step 1.
Prepare an anti-static work pad or container for placing a removed
module. Use of an ESD grounding strap is highly recommended.
Step 2.
Remove the BBU module, if installed. Carefully place the module for
it contains Li-ion batteries. Do not drop it to the floor or place it near
any heat source or fire.
Step 3.
Remove the controller module. See Section 0.
Step 4.
Remove the previously installed DIMM module from the DIMM
socket. To do this, push the white module clips on either side of the
DIMM socket down. By doing this, the previously installed modules
will be ejected from the DIMM socket. (See Figure 5-4)
Figure 5-4: Removing a DIMM Module
Step 5.
Gently pull the DIMM module out of the DIMM socket.
Step 6.
Insert the replacement module into the DIMM socket. Make sure the
white clips of the DIMM socket are in the open positions. Align the
DIMM module with the DIMM socket by checking its “keyed”
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SecurStor 16i Installation and Hardware Reference Manual
position. Once aligned, gently and firmly push the DIMM module into
the socket. The white clips on the sides of the socket will close
automatically and secure the DIMM module into the socket.
Step 7.
Reinstall the controller module. After the DIMM module has been
properly installed, install the RAID controller. To do this, align the
controller module with the controller module bay. Then gently push
the controller module in the controller bay. Carefully push the
controller until you feel the contact when the board edge connectors
are being mated to the backplane. Do not use force. If unusual contact
resistance is felt, try it again. Use the ejection levers on the sides of
the controller to secure it into the chassis.
When the controller is inserted with the lever at its the lowest position,
notches on the levers should properly clinch to the round metal
protrusions on the interior walls of module bay. You may then pull the
lever upward to secure the controller into module bay.
Step 8.
Next secure the controller module into the subsystem by fastening the
screws through holes underneath each ejection lever.
5.4 Replacing a Faulty BBU
The BBU is an optional item for the subsystem that can sustain cache memory in the event of a power
failure or in the unlikely event of failing both PSUs. The BBU provides additional data security and helps
minimize the chance of losing data due to power outages.
A BBU consists of a metal bracket, battery cell pack, and a PCB board that connects to the controller
module. Each BBU is secured to the subsystem using retention screws. Please read the BBU handling
precautions below before proceeding with the replacement procedure.
Fault Conditions:
A BBU failure can result from the following:
1.
A BBU has lost its ability to hold electrical charge. This may be the case after the
battery cells have been recharged for many times regardless of how long the module
has been used. Therefore, a stable power source is important for system operation.
2.
The charger circuitry implemented with the controller has failed.
There are other conditions that might trigger the BBU fault events and trigger the BBU fault LED:
5-8
1.
The temperature sensor embedded with the subsystem’s charger circuit reports a
temperature reading exceeding the preset threshold. The charger circuits will enter a
low-power and self-protection state.
2.
A BBU module has been charged for over twelve (12) hours. A timer is embedded
with the charger. When this occurs, the charger will enter a timer fault state. The
fault condition usually occurs with a brand new BBU or with a totally discharged
Chapter 5: Subsystem Maintenance and Upgrading
BBU. Charging will resume automatically if you remove and re-install the BBU
module.
5.4.1 BBU Warnings and Precautions
ƒ
Install or replace the BBU with BBUs supplied by your EMD vendors only. Use
of battery cells provided otherwise will void our warranty.
ƒ
Always dispose of a replaced battery in an ecologically responsible manner.
Dispose of used BBUs at authorized battery disposal sites only.
ƒ
Do not use or leave the BBU near a heat source. Heat can melt the insulation and
damage other safety features of battery cells, possibly will cause acid leak and
result in flames or explosion.
ƒ
Do not immerse the BBU in water nor allow it to get wet. Its protective features
can be damaged. Abnormal chemical reactions may occur, possibly cause
functional defects, acid leak, and other hazardous results.
ƒ
Do not disassemble or modify the BBU. If disassembled, the BBU could leak
acid, overheat, emit smoke, burst and/or ignite.
ƒ
Do not pierce the BBU with a sharp object, strike it with a hammer, step on it, or
throw it. These actions could damage or deform it and internal short-circuiting
can occur, possibly cause functional defects, acid leak, and other hazardous
results.
ƒ
If a BBU leaks, gives off a bad odor, generates heat, becomes discolored or
deformed, or in any way appears abnormal during use, recharging or storage,
immediately remove it from the subsystem and stop using it. If this is discovered
when you first use the BBU, return it to EMD.
5.4.2 Replacing a Faulty BBU
To replace the BBU, please follow these steps:
Step 1.
Remove the faulty BBU from the chassis. The BBU module is
secured to the chassis with two (2) screws. Loosen the retention
screws located at the sides of the BBU faceplate, then pull out the
BBU. (See Figure 5-5)
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Figure 5-5: Remove the Retention Screws from BBU Faceplate
Figure 5-6: Remove the BBU Module
Step 2.
5-10
Install the replacement BBU. After the faulty BBU has been
removed, the new BBU module can be installed. To do this, align the
BBU module with the empty slot, and then gently push the BBU
module into the slot. (See Figure 5-7)
Chapter 5: Subsystem Maintenance and Upgrading
Figure 5-7: Install the BBU Module
Step 3.
Secure the BBU module to the enclosure. Tighten the two (2)
retention screws as shown above using a Phillips screwdriver.
Step 4.
Reset the subsystem. Find appropriate time to reset the subsystem for
the subsystem firmware to recognize the replacement module. After
reset, the BBU LED will start flashing to indicate that the BBU is
being charged. When the BBU is fully charged, the LED will be off.
NOTE:
1.
A new or replacement BBU takes approximately seven (7) hours to charge to
its full capacity. Reset the subsystem whenever a BBU is replaced or added in
order for the replacement module to take effect.
2.
The life expectancy of a BBU is more than one year. However, it is
considered a safe procedure to replace the BBU every year. Follow the
procedures above to replace a used BBU with a replacement in order to
maintain the fault tolerance feature.
3.
The chance of BBU charger failure is comparatively low. If the cause of a
failure cannot be determined even after a BBU module is replaced, contact
your system vendor for a replacement controller and return the controller
module through EMD’s standard RMA procedure.
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SecurStor 16i Installation and Hardware Reference Manual
5.5 Replacing a Failed PSU Module
5.5.1 Notes on PSU Module Maintenance
ƒ
Two (1+1) redundant PSU modules: The subsystem comes with two fully
redundant, hot-swappable PSU modules. These modules are located at the rear
section of the subsystem.
ƒ
PSU canister: Each PSU module is housed in a robust steel canister, with the
power supply converter unit in the front and two serial-aligned cooling fans in
the rear section. When the PSU is removed from the chassis, the cooling module
is also removed.
ƒ
Printed text on PSU handle: Before you insert a new PSU, make sure that the
printed text on the PSU handle matches the printed text on a partner PSU.
Double-check to avoid using a PSU of a different EMD series.
Figure 5-8: Printed Text on PSU Handle
ƒ
Immediate replacement: When a PSU fails, it should ideally be replaced
immediately. Do not remove the PSU module unless a replacement is readily
available. Removing a PSU without a replacement will cause severe disruptions
to the internal airflow and the subsystem will overheat, possibly causing
irreparable damage to some of the subsystem components.
WARNING!
Although the subsystem can operate using a single PSU module, it is not advisable
to run the EMD subsystem with a single PSU module for an extended period of
time.
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Chapter 5: Subsystem Maintenance and Upgrading
5.5.2 Replacing the PSU Module
WARNING!
Before you insert a new PSU, be sure that it has the same warning label on its
extraction handle as that shown on the lever of a remaining PSU. Double-check to
avoid mixing a similar yet different PSU of another EMD series.
To replace a PSU, please follow these steps:
Step 1.
Power off the PSU. The power switch is located on each PSU’s rearfacing panel. (See Figure 5-9)
Step 2.
Disconnect the power cord that connects the PSU to the main power
source.
Step 3.
Remove the retention screw that secures the rejection handle to the
chassis. (See Figure 5-10: Removing the PSU Retention Screw.)
Figure 5-9: PSU Parts Identification
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SecurStor 16i Installation and Hardware Reference Manual
Figure 5-10: Removing the PSU Retention Screw
Step 4.
Remove the PSU module by grabbing the rejection handle and pulling
the handle upwards. The rejection handle should gracefully disconnect
the PSU from the backplane connectors. Once dislodged, gently pull
the PSU module out of the subsystem. If the subsystem is mounted in
a rackmount rack, use another hand to support its weight while
removing the module. (See Figure 5-11)
Figure 5-11: Removing the PSU Module
5-14
Chapter 5: Subsystem Maintenance and Upgrading
WARNING!
1.
When a PSU is removed form the chassis, the cooling module is also removed
from the chassis.
2.
It is recommended that the replacement procedure is completed in less than
five (5) minutes to prevent the subsystem from overheating.
Step 5.
Install the replacement module. Make sure the ejection handle is at
its up-most position so that the saddle notches on the sides of the
handle can snap onto the metal protrusions along the interior walls of
the PSU slot. Push the PSU into chassis, and when you feel the
contact resistance, push the handle downward to secure the module.
Step 6.
Secure the PSU to the subsystem by fastening the retention screw
through the PSU ejection handle.
Step 7.
Replace and Connect the power cord that connects the PSU module
to the mains.
Step 8.
Power on the PSU module.
5.6 Cooling Module Maintenance
5.6.1 Notes on Cooling Module Maintenance
ƒ
Redundant cooling modules: The subsystem is equipped with four (4) cooling
fans, two (2) within each PSU module. These cooling modules control the
internal operating temperature of the subsystem and therefore their working
integrity should be maintained at all times.
Although the cooling modules are fully redundant, it is not advisable to run the
EMD subsystem with fans in a single PSU module for an extended period of
time. If the cooling fans in the only remaining PSU module fail, the subsystem
will quickly overheat.
ƒ
Detecting a failed cooling module: If a cooling module fails, the LEDs located
at the back of the PSU module, an audible alarm, the firmware, the RAIDWatch
manager software, or the Configuration Client can notify you.
ƒ
Replacing a cooling module: Once you are notified that a cooling module has
failed, it should be replaced as soon as possible. A failed cooling module should
only be removed from the subsystem when you have a replacement module
immediately available.
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SecurStor 16i Installation and Hardware Reference Manual
5.6.2 Replacing a Cooling Module
If one of the cooling modules fails, it must be replaced as soon as possible. The cooling module is
secured to the PSU module with the six (6) screws from the top. To replace the cooling module,
follow the steps below:
WARNING!
The fan replacement process should be completed within five (5) minutes. If the
process takes too long, the accumulated heat can damage the subsystem.
Step 1.
To remove the cooling module, remove the PSU module first.
Please follow the PSU removal process listed in the previous
discussion.
Step 2.
Use a medium-size Phillips screwdriver to remove the six screws
from the top of the PSU module. (See Figure 5-12: Removing a
Cooling Module)
Figure 5-12: Removing a Cooling Module
Step 3.
Remove the cooling fan assembly by the following steps:
Step 3-1.
Make sure the PSU handle is in the down position so
that you can grab the edge of the cooling fan assembly.
Step 3-2.
Use your thumb and middle fingers to seize the
cooling assembly, your thumb by the upper edge of the fan guard
and your middle finger at the hemispheric indent.
5-16
Chapter 5: Subsystem Maintenance and Upgrading
Step 3-3
Tilt the fan a little bit and remove the fan assembly
with a precisely vertical motion.
Figure 5-13: Removing a Cooling Module
Step 4.
Install the replacement module by aligning it with the module bay
on the PSU module and gently lowering it into. The fan outlet
should be aligned with the PSU faceplate and that the side with
screw holes should be facing up. Do this with a precisely vertical
motion so that the cooling module’s connector can correctly mate
with the connector in the module bay.
5-17
SecurStor 16i Installation and Hardware Reference Manual
Step 5.
Secure the module by fastening the screws you previously
removed.
Step 6.
Reinstall the PSU module into chassis. When powered on, check
if the cooling fan LEDs are lit. If not, that means your cooling fans
are operating properly.
5.7 Replacing a Failed Hard Drive
5.7.1 Hard Drive Maintenance Overview
•
Hot-swappable drive trays: The drive trays are all hot-swappable. A disk drive
failure can be corrected online.
•
Handles: If the failed hard drive is behind either the left or right front handle,
unfold the handles to open the front access to the drive trays.
Figure 5-14: Open the Front Handles
Step 1.
Open flap: Once the front flap on the drive tray has been opened, the
drive tray must be removed from the subsystem. Failure to remove
the drive tray from the subsystem after the front flap has been
opened may cause data errors.
Step 2.
Slowly remove a faulty drive: When removing a drive tray from the
subsystem, pull the drive tray out only about one inch and
then wait for at least 30 seconds for the hard drive motor
to spin down before taking it out completely. Any impact to
the hard drive while the drive motor is spinning can damage the hard
drive.
There are situations that healthy drives can be removed. In
operations such as Copying & Replacing member drives with drives
of larger capacity, you may need the replaced disk drives in other
installations.
5-18
Chapter 5: Subsystem Maintenance and Upgrading
Step 3.
Keep a replacement on hand: If a hard drive has failed, make sure
you have a replacement drive readily available before removing the
failed drive from the subsystem. Do not leave the drive tray slot
open for an extended period of time or the normalized airflow will
be disrupted and subsystem components will overheat and may
become permanently damaged.
5.7.2 Replacing a Hard Drive
To replace a hard drive, please follow these steps:
WARNING!
Hard drives are fragile; therefore, always handle them with extreme care.
ƒ
Do not drop the hard drive.
ƒ
Always be slow, gentle, and careful when handling a hard drive.
ƒ
Handle a hard drive only by the edges of its metal cover, and avoid touching
its circuits part and interface connectors.
Step 1.
Identify the location of the drive tray that contains a hard drive
indicated as faulty. You may use firmware utility or RAIDWatch
software to locate a faulty drive. The drive tray LED should also
light red.
Step 2.
Make sure the rotary bezel lock is in the unlocked position, i.e.,
the groove on its face is in a horizontal orientation. If the groove is
in a vertical position, as shown below, then the bezel lock is
locked and the front flap on the drive tray cannot be opened.
Figure 5-15: Front View of an Individual Drive Tray
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SecurStor 16i Installation and Hardware Reference Manual
Step 3.
Open the front flap on the drive tray. Push the release button on the
front of the drive tray. The front flap will automatically swing up into
position.
Figure 5-16: Opening the Drive Tray Front Flap
Step 4.
Remove the drive tray by pulling it one inch away from the drive
bay. Wait for at least 30 seconds for the disk drive to spin down (if
the disk drive is removed for a different purpose, e.g., cloning the
members of a logical drive or Copy & Replace), and then gently and
carefully withdraw the drive tray from the chassis.
Figure 5-17: Removing a Drive Tray
Step 5.
5-20
Remove the four (4) retention screws that secure the hard drive
from the sides of the drive tray (two on each side.)
Chapter 5: Subsystem Maintenance and Upgrading
Figure 5-18: Loosening the Hard Drive Screws
Step 6.
Install the replacement hard drive. Please refer to the complete hard
drive installation procedures in Section 2.6.
5-21
Appendix A
Specifications
A.1 Technical Specifications
Environmental Specifications
Humidity
5 to 95% (non condensing – operating and non-operating)
Temperature
Operating: 0º to 40ºC (35ºC if BBU is applied)
Non-operating: -40º to 60ºC
Altitude
Operating: Sea level to 12,000ft
Packaged: Sea level to 40,000ft
Power Requirements
Input Voltage
100VAC @ 9A
240VAC @ 4.5A with PFC (auto-switching)
Frequency
47 to 63Hz
Power Consumption
530W
Dimensions
With Forearm Handles
Without Forearm Handles
(Not including rear-end
protrusions)
Height
131mm (5.2 inches)
130mm (5.1 inches)
Width
482.6mm (19 inches)
445mm (17.5 inches)
Length
504.3mm (19.8 inches)
488.2mm (19.2 inches)
System Weight
Net Weight
28kg (61.7 pounds)
Gross Weight
31kg (68.3 pounds)
A-1
SecurStor 16i Installation and Hardware Reference Manual
Certifications
•
•
FCC Class-B
CE
•
•
•
CB
UL60959 / IEC 60950
BSMI
Shock
Half-sine
Operating: 5G peak, 11ms duration
Non-operating: 15G, 11ms duration
Vibration
Operating
5 to 500Hz, 0.2G, X/Y/Z
Non-operating
5 to 500Hz, 1.0G, X/Y/Z
Warning Alarms
•
•
•
A-2
Audible alarms
System LEDs
Event notification via the RAIDWatch Manager (LAN broadcast, email, fax, MSN, SMS,
and SNMP traps) and RS-232C terminal screen
Appendix A
Specifications
A.2 Controller Specifications
Configuration
Specification
RAID Levels
Host O/S Compatibility
Host Interface
Host Channels
Drive Interface
Drive Channels
Cache Mode
Cache Memory
Number of LUN’s
Multiple Target
IDs/Host Channel
Firmware on Flash
Memory
0, 1(0 + 1), 3, 5, 6, 10, 30, 50, 60, JBOD, and non-RAID disk
spanning
Host O/S independent; also dependent on iSCSI offload utilities and
hardware
RJ-45 Gigabit Ethernet
4 pre-configured host channels
Supports up to 16 channels of 3Gbps SATA-II; SATA-I backward
compatible
All drive channels are pre-configured and cannot be changed
Write-through, write-back, and adaptive write policy
Pre-installed 512MB (or above) DDR RAM DIMM with/without
ECC, registered; in one DIMM socket
Up to 32 per host ID
Yes
Yes
Architecture
Specification
CPU
Gigabit Ethernet Chip
Controllers
DIMM Slot
933MHz PowerPC 750GL
ASIC
Excel-Meridian Data 64-bit chipset (ASIC400)
Flash ROM
64Mbit (8MB)
NVRAM
128Mbit with RTC (with Embedded RAIDWatch utility)
Hardware XOR
Yes
Real-time Clock
For event messages with time record and task scheduling
Intel 82546 x 2
One 184-pin DDR DIMM module
A-3
SecurStor 16i Installation and Hardware Reference Manual
A.3 Drive Tray Specifications
Specification
Height
28mm
Width
110mm
Depth
218.92mm
Key Lock
Yes
A.4 Power Supply Specifications
Specification
Nominal Power
DC Output
Input Frequency
530W with active PFC
12.0V: 32A (Max.)
5.0V: 32A (Max.)
3.3V: 30A (Max.)
47 to 63Hz
AC Input
Power Factor
Correction
Hold-up Time
100VAC @ 9A or 240VAC @ 4.5A with PFC
Over-temperature
Protection
Auto shutdown when lost cooling or exceeded ambient temperature;
over-voltage protection is also available.
No fans specific for PSU; heated air is drawn by the cooling fan
module fixed in the rear section of PSU.
Cooling Fans
Yes
At least 20ms at 115/230VAC full load after a loss of AC input
A.5 Cooling Module Specifications
Specification
Speed
Max. Air Flow (each
module)
High or low rotation speed controlled by firmware proactive mechanisms
Input Power
13.2W max.
Input Current
1.1A max.
Rated Voltage
DC 12V
Temperature
Acoustic Noise
A-4
High speed: 90 CFM
Low speed: 70.7 CFM
Operating: -10 to +70ºC
Storage: -30 to +70ºC
High speed: 51dB Max.
Low speed: 46dB Max.
Appendix A
Specifications
A.6 RAID Management
Specification
•
•
•
Configuration
Performance Monitoring
Remote Control and
Monitoring
Event Broadcast/Alert
Event Notification
Hardware Connection
Configuration on Disk
Failure Indicator
Text-based firmware-embedded utility over RS-232C
through the included audio jack-to-DB-9 serial cable
LCD keypad panel
The RAIDWatch Manager program using the management
port (10/100BaseT)
Yes
Yes
Yes (via RAIDWatch sub-modules, the Configuration Client utility,
NPC, or Embedded, browser-based RAIDWatch)
Yes (via RAIDWatch sub-modules, Configuration Client, NPC, or
Embedded, browser-based RAIDWatch)
over Ethernet or RS-232C
Configuration data stored on disks for logical drive assemblies to
exist after controller replacement; basic settings, e.g., channel mode
settings, are stored on NVRAM
Via audible alarm, LCD panel, RAIDWatch Manager session, or
terminal emulation
A.7 Fault Tolerance Management
Specification
Drive S.M.A.R.T. support
Battery Back-up Option
Sensors and Module Presence
detection through an I2C serial
bus.
Automatic Drive Failure
Detection
Automatic Rebuild on Spare
Drives
Regenerate Logical Drive Parity
Bad Block Reassignment
Automatic Rebuild upon Failed
Drive Replacement
Manual Clone of Suspected
Failed Drive
Concurrent Rebuild on Multiple
Drives in a RAID (0 + 1) or
RAID6 Logical Drive
Salvage the 2nd Temporarily
Failed Drive in a RAID 1, 3 5, or
Yes, with user-configurable detect-only, clone-and-replace,
and perpetual-clone options.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
A-5
SecurStor 16i Installation and Hardware Reference Manual
6 Logical Drive
Salvage the 1st Temporarily
Failed Drive in a RAID 0 Logical
Drive
A-6
Yes
Appendix B
Pinouts
B.1. D-SUB 9 and Audio Jack Pinouts
B.1.1. COM1 Serial Port Cable
COM1 Cable: This cable connects the COM1 serial port on the controller module to the serial
port of a management computer. The serial port’s defaults and requirements are:
1.
Set at 38400 baud, 8 bit, 1 stop bit, and no parity.
2.
In most cases, connecting RD, TD, and SG is enough to establish communications with a
terminal.
Figure C-19: Adapter Cable for COM1 - Connector Pinouts
CN1 Pin Number
1
2
3
CN2 Pin Number
1
2
3
4
5
6
7
8
9
Pin Name
Ground
TXD
RXD
Pin Name
NC
RXD
TXD
DTR (Shorted)
GND
DSR (Shorted)
RTS (Shorted)
CTS (Shorted)
NC
Table B-1: COM1 Adapter Cable CN1 and CN2
Pin Out Definitions
B-1
SecurStor 16i Installation and Hardware Reference Manual
B.1.2. COM2 Serial Port Cable to UPS
COM2 Cable: Use this cable to connect the COM2 port to a UPS.
Figure C-20: Connector Pinouts - Adapter Cable for COM2
CN1 Pin Number
1
2
3
CN2 Pin Number
1
2
3
4
5
6
7
8
9
Pin Name
Ground
TXD
RXD
Pin Name
TXD
RXD
NA
NA
NA
NA
NA
NA
Ground
Table B-2: COM2 Adapter Cable CN1 and CN2
Pin Out Definitions
B.2. Null Modem
A null modem has its wires swapped and is necessary for connecting COM1 CN2 to the
serial port of a management computer.
B-2
Appendix B: Pinouts
Figure B-21: Null Modem Pinouts
Swap pin 2 and pin 3
Swap pin 4 and pin 6
Swap pin 7 and pin 8
Table B-3: Null Modem Pinouts
B.3. Ethernet Port Pinouts
Figure B-22: Ethernet Port Pinouts
B-3
SecurStor 16i Installation and Hardware Reference Manual
Pin
Pin Name
Pin
Pin Name
1
LAN_TXP
5
N2
2
LAN_TXN
6
LAN_RXN
3
LAN_RXP
7
N1
4
N2
8
N1
Table B-4: Ethernet Port Pinouts
B.4. STP LAN Cable
This shielded twisted pair cable is an optional accessory item. More details are shown below:
Description: SFTP CAT5E Ethernet cable.
Color: black.
Connector: 8P8C plug (covered by metal shield)
Cable type: round cable, #24AWG*4P braided wire OD: 6.2mm
metal shield – braided wire – metal shield
Figure B-23: STP Ethernet Cable Pinouts
B.5. Main Power
IEC-type receptacle. Unless specified otherwise, cable type will be determined by the shipped-to area.
B-4
Appendix C
Uninterruptible Power Supply
C.1 Uninterruptible Power Supply Overview
An uninterruptible power supply (UPS) is a separately purchased battery backup unit that is
connected to an EMD Storage subsystem. If the UPS is sufficiently large, it should allow the
whole subsystem to safely finish the ongoing I/Os in the event of an AC power failure.
C.2 Compatible UPS Supplies
The APC SMART-UPS 700VA is compatible with the SecurStor subsystem.
C.3 Serial Communication Cable
The subsystem is shipped with a customized audio-jack to DB9 serial communication cable.
The cable is used to connect the controller module on a subsystem to a PC hyperterminal for
subsystem management. If you wish to use a UPS with your subsystem, an additional audiojack to DB9 serial communication cable (see Figure C-24) must be purchased.
Figure C-24: Audio-Jack to DB9 Serial Communication Cable
CAUTION!
The pinouts on the COM2 audio-jack to DB9 serial cable used to connect
to the UPS are different from the pinouts on the serial cable that was
shipped with the subsystem. When connecting the UPS device, please
make sure you use the correct cable type. The cable pinouts are listed in
Appendix B.
C.4 Connecting the UPS to the Subsystem
C.4.1 Connect the PSU Module Power Cords
The two (2) power cables shipped with the subsystem must be plugged into the
power cord sockets in the rear of the PSU modules. The plug at the other end of the
C-1
SecurStor 16i Installation and Hardware Reference Manual
power cable must be inserted into a socket on the UPS. (See Figure C-25) Please
refer to the UPS manual to determine the location of these sockets. The UPS must
then be connected to main power.
C.4.2 Set the Baud Rate
The default baud rate for the COM 2 serial port is 38400 and must be changed to
2400. For instructions on changing the baud rate, please refer to the SCSI to SATA
RAID Subsystem’s Operation Manual that came with the subsystem.
C.4.3 Connect COM2
The separately purchased audio-jack to DB9 serial cable connects the COM2 port on
the controller module to the UPS directly. (See Figure C-25) The cable transmits
UPS status updates to the controller module and will in turn determine the write
policy of the controller module. To connect the serial communication cable to the
subsystem controller, insert the audio jack connector on one end of the cable into the
COM2 port on the controller module. To see how to connect the DB9 connector to
the UPS, please refer to the documentation that came with your UPS.
Figure C-25: Connecting the UPS to the Subsystem
C.5 Power On
When powering on the subsystem, the UPS must be powered on before the subsystem. For
instruction on how to power on the UPS, please refer to the documentation that came with
your UPS. Note that the power on sequence described in Chapter 4 will be altered. The power
on sequence when a UPS is connected is shown below:
Step 1. Power on SCSI channel connection devices (including hubs and
switches).
Step 2. Power on the UPS.
Step 3. Power on the subsystem.
Step 4. Power on the host computers.
C-2
Appendix C: Uninterruptible Power Supply
Step 5. Trigger the firmware to allow the subsystem to detect the UPS.
To see how to do this please, refer to the Generic Operation
Manual that came with the subsystem.
NOTE:
•
A UPS can be connected to the subsystem after the subsystem has
been powered on, but you will have to trigger the firmware to allow
the subsystem to detect the UPS.
•
If you are daisy chaining systems together, be sure to make all the
cable connections and then power on the SecurStor 16i subsystem
that is not directly connected to host computer before powering on the
first subsystem.
C.6 UPS Status Monitoring
If a UPS has been correctly connected to the subsystem, the status of the UPS will be
constantly monitored by the controller through the COM2 (audio jack) serial port. The status
of the UPS will determine the controller’s write policy, and messages that appear on the LCD
panel and other monitoring devices will keep you informed of the UPS status.
C.6.1 Normal Operational Status
If the UPS has been connected to main power and the UPS battery power level is
above 50%, then no status messages will appear and the default “Write Back” write
policy will be implemented by the controller.
C.6.2 UPS Messages
The following messages may appear on the LCD screen:
Message 1: “UPS connection is absent”
This message appears when COM2 has not been connected to the UPS.
Message 2: “UPS connection detected”
This message appears when the COM2 ports on the subsystem have been connected
to the UPS.
Message 3: “Warning: UPS AC Power-Loss detected”
This message appears when the UPS battery power level remains above 50% but its
connection to the AC power supply has been disrupted in some way. The write policy
changes from write back to write through.
Message 4: “Warning: UPS Battery Low 50%. Please shut down to protect data
loss”
This message appears when the UPS battery power level has dipped below 50% of its
capacity and the UPS has either been disconnected from the AC power supply or the
AC power supply has been disrupted. The write policy will be changed from the
C-3
SecurStor 16i Installation and Hardware Reference Manual
default write back to write through. If this message appears, the subsystem should be
properly shut down to avoid data loss.
Message 5: “Warning: UPS Battery Low 50%”
This message appears when the UPS battery power level has dipped below 50% of its
capacity. The default write policy will be changed from the default write back to
write through.
Message 6: “UPS Battery restored to safe level”
This message appears when the UPS battery power level has been restored to above
50% of its capacity. The write policy will be changed from write through to write
back.
Message 7: “UPS AC Power Restored”
This message appears when the AC power supply to the UPS has been reconnected.
If the UPS battery power level is below 50%, the write policy will remain as write
through. If the battery power level is above 50%, the write policy will change from
write through to write back.
C.6.3 UPS Message Summary
Table C-1 below summarizes the UPS messages described above. It is
important that you become familiar with these messages and their meanings
to help maintain the integrity of the data running through your subsystem.
Message
AC Power
Battery
Power
Level (BPL)
Write
Policy
Status
UPS connection is absent
N/A
N/A
Write back
UPS connection detected
N/A
N/A
Write back
Warning: UPS AC PowerLoss detected
Disconnected
BPL > 50%
Write through
Warning: UPS Battery
Low 50%. Please shut
down to protect data loss
Disconnected
BPL < 50%
Write through
Warning: UPS
Low 50%.
Connected
BPL < 50%
Write through
UPS AC Power Restored
Reconnected
BPL > 50%
Write back
UPS AC Power Restored
Reconnected
BPL < 50%
Write through
UPS Battery restored to
safe level
Reconnected
BPL > 50%
Write back
Battery
Table C-1: UPS Status Messages
C-4
Appendix C: Uninterruptible Power Supply
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C-5
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