HP StorageWorks
XP24000/XP20000 Disk Array Owner Guide
Abstract
This guide describes the operation of the HP StorageWorks XP24000/XP20000 Disk Arrays. Topics include a
description of the disk array hardware, instructions on how to manage the disk array, descriptions of the disk
array control panel and LED indicators, troubleshooting, and regulatory statements. The intended audience is
a storage system administrator or authorized service provider with independent knowledge of HP StorageWorks
XP storage systems and Remote Web Console.
Part Number: AE131-96081
Fifth edition: October 2010
Legal and notice information
© Copyright 2008, 2010 Hewlett-Packard Development Company, L.P.
Confidential computer software. Valid license from HP required for possession, use or copying. Consistent with FAR 12.211
and 12.212, Commercial Computer Software, Computer Software Documentation, and Technical Data for Commercial Items
are licensed to the U.S. Government under vendor's standard commercial license.
The information contained herein is subject to change without notice. The only warranties for HP products and services are set
forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as
constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.
Warranty
WARRANTY STATEMENT: To obtain a copy of the warranty for this product, see the warranty information website:
http://www.hp.com/go/storagewarranty
Acknowledgments
Microsoft, Windows, Windows XP, and Windows NT are U.S. registered trademarks of Microsoft Corporation.
Java is a US trademark of Sun Microsystems, Inc.
UNIX is a registered trademark of The Open Group.
Contents
1 Overview of the HP XP24000/XP20000 Disk Array ............................... 7
Outstanding performance, capacity, and reliability ......................................................................... 7
Continuous data availability ......................................................................................................... 7
Nondisruptive service and upgrades ............................................................................................. 8
Connectivity ............................................................................................................................... 8
Scalability ................................................................................................................................. 9
XP24000 basic configuration ................................................................................................. 9
XP20000 basic configuration ................................................................................................ 9
Adding storage ........................................................................................................... 10
Primary rack expansion ................................................................................................ 10
Secondary rack expansion ............................................................................................ 10
Flexibility ................................................................................................................................. 10
Data encryption ........................................................................................................................ 10
HP XP24000/XP20000 product contents ..................................................................................... 10
Web-based array management ............................................................................................ 11
Operating systems .............................................................................................................. 11
External storage ................................................................................................................. 11
Included components .......................................................................................................... 11
Required additional components .......................................................................................... 12
Software .................................................................................................................................. 12
2 Hardware description of the HP XP24000/XP20000 Disk Array ............ 19
XP24000 system architecture ......................................................................................................
XP20000 system architecture ......................................................................................................
Physical assemblies ...................................................................................................................
Disk control frame .....................................................................................................................
DKC clusters ......................................................................................................................
Unit emergency power off switch ..........................................................................................
Service Processor (SVP) .......................................................................................................
Disk array frames ......................................................................................................................
Disk drives ...............................................................................................................................
RAID options .....................................................................................................................
Backup batteries .......................................................................................................................
Operating specifications ............................................................................................................
XP24000/XP20000 hardware specifications .........................................................................
Temperature specifications ...................................................................................................
Humidity specifications .......................................................................................................
Mechanical vibration specifications ......................................................................................
XP24000/XP20000 AC line voltage requirements ..................................................................
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3 Operating the HP XP24000/XP20000 Disk Array ............................... 33
General safety guidelines .......................................................................................................... 33
Managing the disk array ........................................................................................................... 35
Control panel and LED descriptions ............................................................................................. 36
XP24000/XP20000 Disk Array Owner Guide
3
Powering down the disk array ....................................................................................................
Planned power off ..............................................................................................................
Emergency power off ..........................................................................................................
To power off the disk array in an emergency ...................................................................
Recovering from an unplanned power outage ...............................................................................
Manual restart after power is restored ...................................................................................
To restart the disk array manually ...................................................................................
Automatic restart when power is restored ...............................................................................
38
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4 Troubleshooting the HP XP24000/XP20000 Disk Array ........................ 43
Service information messages .....................................................................................................
HP StorageWorks XP Continuous Track (C-Track) ...........................................................................
HP Insight Remote Support Advanced ..........................................................................................
Failure detection and reporting process .......................................................................................
43
43
43
45
5 Support and other resources .............................................................. 47
Related documentation ..............................................................................................................
HP technical support .................................................................................................................
Customer self repair ..................................................................................................................
Rack stability ............................................................................................................................
Subscription service ..................................................................................................................
HP websites .............................................................................................................................
Documentation feedback ...........................................................................................................
47
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6 Regulatory statements for the HP XP24000/XP20000 Disk Array ........... 49
FCC EMC statement (USA) .........................................................................................................
Notice for the European Union ...................................................................................................
IEC statement (worldwide) ..........................................................................................................
EMC statement (Canada) ...........................................................................................................
Spécification ATI Classe A (France) .............................................................................................
VCCI EMC statement (Japan) .....................................................................................................
BSMI EMC statement (Taiwan) ....................................................................................................
RRL EMC statement (Korea) ........................................................................................................
Harmonics conformance (Japan) .................................................................................................
German noise declaration ..........................................................................................................
Laser safety ..............................................................................................................................
Japan DENAN law cordset caution .............................................................................................
European WEEE statements ........................................................................................................
49
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Glossary ............................................................................................ 57
Index ................................................................................................. 63
4
Figures
1 Disk array simplified SAN connection .......................................................................... 9
2 XP24000 system architecture .................................................................................... 20
3 XP20000 system architecture .................................................................................... 21
4 Disk array frames .................................................................................................... 21
5 Front and rear PCB clusters in the DKC ....................................................................... 22
6 Disk drive installation in the HDU box ........................................................................ 24
7 DKA and HDU interconnections ................................................................................ 24
8 Intermixed RAID groups ........................................................................................... 25
9 Battery de-staging and backup modes ....................................................................... 26
10 Disk array management connections ......................................................................... 35
11 Control panel and LED descriptions ........................................................................... 36
12 Emergency power-off switch location ......................................................................... 39
13 Failure reporting process .......................................................................................... 45
XP24000/XP20000 Disk Array Owner Guide
5
Tables
1 Remote Web Console-based software for XP24000/XP20000 disk arrays ..................... 12
2 Host/Server-based software for the XP24000/XP20000 disk arrays .............................. 15
3 XP Command View Advanced Edition Software for XP24000/XP20000 disk arrays ........ 16
4 XP24000 selected hardware specifications ................................................................. 26
5 XP20000 selected hardware specifications ................................................................ 28
6 XP24000/XP20000 temperature specifications ........................................................... 29
7 XP24000/XP20000 humidity specifications ............................................................... 29
8 XP24000 DKC power specifications for 50-amp, 50 or 60 Hz, single-phase ................... 30
9 XP24000 DKC power specifications for 30-amp, 50 or 60 Hz, single-phase ................... 30
10 XP24000 DKC power specifications for 30-amp, 50 or 60 Hz, three-phase .................... 31
11 XP24000 DKU power specifications for 50-amp, 50 or 60 Hz, single-phase ................... 31
12 XP24000 DKU power specifications for 30-amp, 50 or 60 Hz, single-phase ................... 31
13 XP24000 DKU power specifications for 30-amp, 50 or 60 Hz, three-phase .................... 32
14 XP20000 DKC power specifications for 20-amp, 50 or 60 Hz, single-phase .................. 32
15 XP20000 DKU power specifications for 30-amp, 50 or 60 Hz, single-phase .................. 32
16 Control panel control and LED descriptions ................................................................. 36
17 HP XP24000/XP20000 Disk Array Remote Support Products ....................................... 44
6
1 Overview of the HP XP24000/XP20000
Disk Array
This disk array is part of the HP StorageWorks XP series of high-performance RAID-capable disk array
systems used to store large quantities of data in an efficient and secure manner. XP disk arrays support
multiple operating systems, platforms, and RAID groups. Advantages include:
•
•
•
•
Continuous data availability
Nondisruptive service and upgrades
Connectivity
Scalability
• Data integrity and high availability
Outstanding performance, capacity, and reliability
The HP StorageWorks XP24000/XP20000 Disk Arrays provide high performance, high capacity,
and solid reliability in a large storage system that can start as small as a single frame and expand
as your storage needs grow. Coupled with HP's comprehensive customer support, the
XP24000/XP20000 disk arrays offer a safe data storage investment that will serve your needs for
years to come.
Continuous data availability
XP disk arrays are designed for nonstop operation and continuous access to all user data.
The highest data availability is achieved by the following features:
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•
•
•
•
•
•
•
•
RAID1, RAID5, RAID6 (mixing RAID levels is allowed)
Mirrored write cache
Dual channel adapters (CHAs) and disk adapters (DKAs)
Dual and concurrently active data and control paths through the array
Split power domains on internal data paths
Hot-pluggable boards
Hot-pluggable fans, power supplies, and controllers
Online upgradable firmware
Remote health and alert monitoring by HP customer support using HP StorageWorks XP Continuous
Track software and HP Insight Remote Support Advanced
The following optional features ensure the disk array meets your requirements for high availability:
• Advanced remote diagnostics
• Full solution (host-SAN-storage) support
• Full software and solution integration enabled by HP software products
XP24000/XP20000 Disk Array Owner Guide
7
NOTE:
Although access to data is not compromised, the failure of a key component can cause a temporary
reduction in disk array performance.
Nondisruptive service and upgrades
Without disrupting normal disk array operations (if alternate pathing is used), an HP support
representative can:
• Remove, service, repair, or replace hardware subassemblies
• Use the built-in service processor (SVP) to upgrade microcode
• Perform remote error monitoring, diagnosis, and maintenance
Alternate paths can be established using host failover software, alternate Fibre Channel paths, or
both.
CAUTION:
The disk array has no user-serviceable components. The SVP does not include a keyboard or monitor
and is not a customer-accessible component. Only an HP support representative should open the
cabinets.
The HP StorageWorks XP C-Track monitoring software and HP Insight Remote Support Advanced
product detects problems and automatically reports them to the HP Storage Technology Center (STC).
An HP support representative can then verify the problem and perform the appropriate remote
maintenance activity with no interruption to applications or hosts. For more information about C-Track,
see “HP StorageWorks XP Continuous Track” on page 43. For more information about HP Insight
Remote Support Advanced, see “HP Insight Remote Support Advanced” on page 43
Connectivity
The system can be configured to provide the following types of host connections:
• Fibre Channel: 8 or 16 ports per adapter pair, up to 4 Gbps, SW or LW
• ESCON: 8 ports per adapter pair, up to 17 MB
• FICON: 8 ports per adapter pair, up to 4 Gbps, SW or LW
Figure 1 shows a simple storage area network (SAN) containing an XP24000/XP20000 disk arrays.
8
Overview of the HP XP24000/XP20000 Disk Array
Figure 1 Disk array simplified SAN connection
.
Scalability
The disk arrays are scalable to accommodate your current and future storage capacity needs.
XP24000 basic configuration
The XP24000 configuration consists of a disk control frame (primary rack) that can have 128HDDs
and zero to 4 disk array frames (DKU) that can each have 256 HDDs for a total of 1152 hard drives.
The disk array provides a flexible configuration that can include:
• Number of installed channel options: Channel Adapters (CHAs) 1 to 14 adapters (each DKA set
above 4 reduces the maximum number of CHAs by two)
• Fibre Channel: up to 224 ports
• ESCON: up to 112 ports
• FICON: up to 112 ports
• Capacity of cache memory: 4 GB to 512 GB
• Up to 1152 HDDs
Your HP support representative can add DKUs and disk drives online with no interruptions to
applications or hosts.
XP20000 basic configuration
The XP20000 configuration consists of a disk control frame (primary rack) that can have 120 HDDs,
and a disk array frame (secondary rack) that can have 120 HDDs. The disk array provides a flexible
configuration that can include:
• Number of installed channel options: 1 to 3 sets
• Capacity of cache memory: 4 GB to 128 GB
• Up to 240 HDDs/8 disk paths
In the basic configuration, the disk array consists of one primary 19–inch rack containing the following:
• One disk controller that consists of the channel adapters, disk adapters, cache memory adapters,
shared memory adapters, and CSW
• Battery boxes and power supplies that supply power to the components
XP24000/XP20000 Disk Array Owner Guide
9
• One 60-disk chassis
Adding storage
You can add more disk chassis in this order: R0, R1, R2, and R3. Each disk chassis contains 60 hard
disk drives.
Your HP support representative can add disk chassis and disk drives online with no interruptions to
applications or hosts. Additional details about each rack follow.
Primary rack expansion
In addition to the basic disk chassis R0, you can expand the disk array in the primary rack as follows:
• Add 60-disk chassis R1 to the top space of the primary rack. This provides a total of up to 120
drives.
Secondary rack expansion
You can add a second 19-inch rack with additional disk units as follows:
• Add one 60-disk chassis to the second rack for a total of up to 180 drives
• Add a second 60-disk chassis to the second rack for a total of up to 240 drives
Flexibility
The new optional HP StorageWorks XP Thin Provisioning software significantly improves system
flexibility while also decreasing storage costs. Using this solution, you begin operation with a global
pool of LDEVs that are not assigned to physical storage. The disk arrays add virtual capacity from
the pool of LDEVs on the fly as data is written, and only at that time is physical capacity assigned to
LDEVs and consumed.
Later, if you need additional storage capacity, you can add it without downtime. To create new LDEVS,
the system simply continues to use LDEVs from the pool, assigning them to the new physical storage
automatically as required.
For more information, see the HP StorageWorks XP24000/XP20000 Thin Provisioning User Guide.
Data encryption
HP StorageWorks DKA Encryption License Key provides physical disk encryption (AES-256) compatible
with open and mainframe systems. Encryption can be applied to some or all internal drives with no
throughput or latency impacts for data I/O and with little or no disruption to existing applications
and infrastructure. HP DKA Encryption License Key includes integrated key management functionality
that is both simple and safe to use. For more information, see the HP StorageWorks XP24000/XP20000
Disk Encryption User Guide or contact your HP account representative.
HP XP24000/XP20000 product contents
The HP XP24000/XP20000 disk array products include hardware, software, services, and support.
Some additional components are required and others are optional, as described in this section. For
the most current product information, visit the HP website:
http://h18006.www1.hp.com/storage/enterprisestorage.html
10
Overview of the HP XP24000/XP20000 Disk Array
Web-based array management
The XP disk arrays come with HP StorageWorks XP Remote Web Console, a Java-based interface
that runs on the SVP and enables you to manage one disk array. For managing multiple arrays, the
optional HP StorageWorks XP Command View Advanced Edition software runs on a Windows-based
server and can be accessed using remote web-based clients. These software solutions enable
comprehensive disk array management.
Operating systems
The disk arrays support these operating systems:
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HP-UX
Linux
Windows
Sun Solaris
IBM AIX
OpenVMS
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•
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Tru64
NonStop
VMware
Novell NetWare
Selected mainframe systems
For the latest information on supported operating systems and versions, contact your HP support
representative or see the HP StorageWorks Single Point of Connectivity Knowledge (SPOCK) website:
http://spock.corp.hp.com/
External storage
The XP disk array connects to the following external storage systems and can provide access to and
management of external volumes:
• HP StorageWorks XP48, XP128, XP256, XP512, XP1024, XP10000, and XP12000 disk arrays
• HP StorageWorks Modular Smart Array MSA1000 and MSA1500
• HP StorageWorks EVA3000, EVA4000, EVA 4400, EVA5000, EVA6000, EVA6100, and
EVA8000 EVA 8100, disk arrays
• Specific disk array models of other manufacturers. Consult your HP representative for details.
For more information about HP external storage, see the HP StorageWorks XP24000/XP20000
External Storage Software User Guide.
Included components
The base XP disk array includes the following hardware, software, services, and support:
•
•
•
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One DKC
Basic redundant power supplies and backup batteries for base cache and shared memory
HP microcode
Modem
XP24000/XP20000 Disk Array Owner Guide
11
• XP Continuous Track software
• Remote Web Console software
• An XP Disk Array Documentation CD (includes owner's guide, OS configuration guides, and
software user guides)
• Site preparation services
• Installation and configuration services
• Proactive support for one year
• Reactive hardware support for two years
• Software support for one year (included with software title)
Required additional components
•
•
•
•
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Cache memory
Shared memory
DKA pairs
CHA pairs
Hard disk drives
• HP StorageWorks XP Array Manager software
Software
HP offers a full suite of software for the HP StorageWorks XP disk arrays. Sophisticated software
packages enable these capabilities so you can take full advantage of the array's power:
•
•
•
•
•
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Manage the disk array configuration
Monitor the array performance
Optimize your disk array and IT resources
Improve overall storage availability
Simplify disaster recovery
Improve data security
Before installing a software package, refer to the software product documentation to verify equipment
requirements.
To learn more about HP software products, or to obtain software updates, visit the HP website and
navigate to XP storage software:
http://www.hp.com
Table 1 Remote Web Console-based software for XP24000/XP20000 disk arrays
Name
HP StorageWorks Remote Web Console
HP StorageWorks Remote Web Console Error
Codes
12
Description
Obtains system configuration and status information and sends user-requested commands to
the storage systems. Serves as the integrated
user interface for all Resource Manager components.
Overview of the HP XP24000/XP20000 Disk Array
Document
HP StorageWorks
XP24000/XP20000 Remote Web
Console User Guide
HP StorageWorks
XP24000/XP20000 Remote Web
Console Error Codes
Name
Description
Document
HP StorageWorks DKA
Encryption License Key
Enables the user to implement encryption for
both open-systems and mainframe data.
HP StorageWorks
XP24000/XP20000 Disk Encryption User Guide
HP StorageWorks XP
Thin Provisioning Software
Provides “virtual storage capacity” to simplify
administration and addition of storage, eliminate application service interruptions, and reduce costs. See the HP StorageWorks
XP24000/XP20000 Thin Provisioning Software
User Guide.
HP StorageWorks
XP24000/XP20000 Thin Provisioning Software User Guide
HP StorageWorks XP
Continuous Access Software
Hitachi TrueCopy™ for
Mainframe
HP StorageWorks XP
Business Copy Software
Hitachi ShadowImage™
for Mainframe
HP StorageWorks XP for
FlashCopy Mirroring
Software
HP StorageWorks XP
Continuous Access
Journal Software
Hitachi Universal Replicator™ for Mainframe
Enables the user to perform remote copy operations between storage systems in different
locations. TrueCopy provides synchronous and
asynchronous copy modes for open-system and
mainframe data.
Allows the user to create internal copies of
volumes for purposes such as application testing and offline backup. Can be used in conjunction with XP Continuous Access to maintain
multiple copies of data at primary and secondary sites.
HP StorageWorks
XP24000/XP20000 Continuous
Access Software User Guide
Hitachi TrueCopy™ for Mainframe
User Guide: HP XP24000 Disk
Array, HP XP20000 Disk Array
HP StorageWorks
XP24000/XP20000 Business
Copy Software User Guide
Hitachi ShadowImage™ for
Mainframe User Guide: HP
XP24000 Disk Array, HP
XP20000 Disk Array
Provides compatibility with the IBM FlashCopy
mainframe host software function, which performs server-based data replication for mainframe data.
HP StorageWorks
XP24000/XP20000 for FlashCopy Mirroring Software User
Guide
Provides a RAID storage-based hardware
solution for disaster recovery which enables
fast and accurate system recovery, particularly
for large amounts of data which span multiple
volumes. Using XP Continuous Access Journal,
you can configure and manage highly reliable
data replication systems using journal volumes
to reduce chances of suspension of copy operations.
HP StorageWorks
XP24000/XP20000 Continuous
Access Journal Software User
Guide
Hitachi Universal Replicator™ for
Mainframe User Guide: HP
XP24000 Disk Array, HP
XP20000 Disk Array
HP StorageWorks XP for
Compatible Extended
Remote Copy (XRC)
Software
Provides compatibility with the Extended Remote Copy (XRC) mainframe host software
function, which performs server-based asynchronous remote copy operations for mainframe LVIs.
HP StorageWorks
XP24000/XP20000 for Compatible Extended Remote Copy (XRC)
Software User Guide
HP StorageWorks XP
Snapshot Software
Provides ShadowImage functionality using less
capacity of the storage system and less time
for processing than ShadowImage by using
“virtual” secondary volumes. XP Snapshot is
useful for copying and managing data in a
short time with reduced cost. ShadowImage
provides higher data integrity.
HP StorageWorks
XP24000/XP20000 Snapshot
User Guide
XP24000/XP20000 Disk Array Owner Guide
13
Name
Description
Document
HP StorageWorks XP
External Storage Software
Realizes the virtualization of the storage system.
Users can connect other storage systems to the
XP24000/XP20000 disk array and access the
data on the external storage system over virtual
devices on the XP24000/XP20000 disk array.
Functions such as TrueCopy and Cache Residency can be performed on the external data.
HP StorageWorks
XP24000/XP20000 External
Storage Software User Guide
HP StorageWorks XP
Disk/Cache Partition
Software
Provides storage logical partition and cache
logical partition: Storage logical partition allows you to divide the available storage among
various users to reduce conflicts over usage.
Cache logical partition allows you to divide
the cache into multiple virtual cache memories
to reduce I/O contention.
HP StorageWorks
XP24000/XP20000 Disk/Cache
Partition User Guide
HP StorageWorks LUN
Manager
Enables users to configure the Fibre Channel
ports and devices (LUs) for operational environments (for example, arbitrated-loop and fabric
topologies, host failover support). The security
function allows users to restrict host access to
data on the disk arrays. Mainframe users can
restrict host access to LVIs based on node IDs
and logical partition (LPAR) numbers.
HP StorageWorks
XP24000/XP20000 LUN Manager User Guide
HP StorageWorks SNMP
Agent
Provides support for SNMP monitoring and
management. Enables SNMP-based reporting
on status and alerts. SNMP agent on the SVP
gathers usage and error information and
transfers the information to the SNMP manager
on the host.
HP StorageWorks
XP24000/XP20000 SNMP Agent
Reference Guide
HP StorageWorks Audit
Log
Provides detailed records of all operations
performed using Remote Web Console (and
the SVP).
HP StorageWorks
XP24000/XP20000 Audit Log
User and Reference Guide
HP StorageWorks LUN
Expansion
Allows open-system users to concatenate multiple LUs into single LUs to enable open-system
hosts to access the data on the entire storage
system using fewer logical units.
HP StorageWorks
XP24000/XP20000 LUN Expansion User Guide
HP StorageWorks Virtual
LVI/LUN
Enables users to convert single volumes (LVIs
or LUs) into multiple smaller volumes to improve
data access performance.
HP StorageWorks
XP24000/XP20000 Virtual
LVI/LUN (VLL) and Volume Shredder User Guide
HP StorageWorks Cache
Residency Manager
Allows users to lock and unlock data into cache
in real time to optimize access to your most
frequently-accessed data.
HP StorageWorks
XP24000/XP20000 Cache Residency Manager User Guide
HP StorageWorks XP for
Compatible Parallel Access Volumes Software
Enables the mainframe host to issue multiple
I/O requests in parallel to single LDEVs in the
storage system. Compatible PAV provides
compatibility with the IBM Workload Manager
(WLM) host software function and supports both
static and dynamic PAV functionality.
HP StorageWorks
XP24000/XP20000 for Compatible Parallel Access Volumes Software User Guide
14
Overview of the HP XP24000/XP20000 Disk Array
Name
Description
Document
HP StorageWorks
Volume Security
Allows users to restrict host access to data on
the storage system. Mainframe users can restrict
host access to LVIs based on node IDs and logical partition (LPAR) numbers.
HP StorageWorks
XP24000/XP20000 Volume Security User Guide
HP StorageWorks Database Validator
Prevents corrupted data environments by
identifying and rejecting corrupted data blocks
before they are written onto the data drives,
thus minimizing risk and potential costs in
backup, restore, and recovery operations.
HP StorageWorks
XP24000/XP20000 Database
Validator User Guide
HP StorageWorks Data
Retention Utility
HP StorageWorks XP
Volume Retention Manager
Allows users to protect data from I/O operations performed by hosts. Users can assign an
access attribute to each logical volume to restrict read and/or write operations, preventing
unauthorized access to data.
HP StorageWorks
XP24000/XP20000 Data Retention Utility User Guide
HP StorageWorks
XP24000/XP20000 Volume Retention Manager User Guide
HP StorageWorks Performance Monitor
Performs detailed monitoring of storage system
and volume activity.
HP StorageWorks
XP24000/XP20000 Performance
Monitor User Guide
HP StorageWorks XP
Performance Control
Software
Allows open-system users to designate prioritized ports (for example, for production servers)
and non-prioritized ports (for example, for development servers) and set thresholds and upper limits for the I/O activity of these ports.
HP StorageWorks
XP24000/XP20000 Performance
Control User Guide
HP StorageWorks
Volume Shredder
Enables users to overwrite data on logical
volumes with dummy data.
HP StorageWorks
XP24000/XP20000 Virtual
LVI/LUN (VLL) and Volume Shredder User Guide
Table 2 Host/Server-based software for the XP24000/XP20000 disk arrays
Name
Description
Document
XP RAID Manager
Enables open-system users to perform data replication
and data protection operations by issuing commands
from the host to the storage systems. The RAID Manager
software supports scripting and provides failover and
mutual hot standby functionality in cooperation with host
failover products.
HP StorageWorks XP RAID
Manager User Guide
XP for Data Exchange Software
Enables users to transfer data between mainframe and
open-system platforms using the FICON and/or ESCON
channels, for high-speed data transfer without requiring
network communication links or tape.
HP StorageWorks XP for Data
Exchange Software User
GuideHP StorageWorks XP for
Data Exchange Code Converter User Guide (336pp)
Cache Residency
Manager
Enables users to perform Cache Residency Manager
operations from the mainframe host system. Cache Residency Manager allows you to place specific data in
cache memory to enable virtually immediate access to
this data.
HP StorageWorks
XP24000/XP20000 Cache
Residency Manager User
Guide
XP24000/XP20000 Disk Array Owner Guide
15
Name
Description
Document
Hitachi Dataset
Replication (Logical Volume Divider)
Operates together with the XP Business Copy feature.
Rewrites the OS management information (VTOC, VVDS,
and VTOCIX) and dataset name and creates a user
catalog for a XP Business Copy target volume after a split
operation. Provides the prepare, volume divide, volume
unify, and volume backup functions to enable use of an
XP Business Copy target volume.
Hitachi Dataset Replication
User Guide: Logical Volume
Divider
Table 3 XP Command View Advanced Edition Software for XP24000/XP20000 disk arrays
Name
Description
Document
HP StorageWorks XP Command View Advanced Edition
Software
Enables users to manage the storage systems
and perform functions (e.g., LUN Manager,
XP Business Copy) from virtually any location
via the Command View Advanced Edition
software Device Manager web client, command line interface (CLI), and/or third-party
application.
HP StorageWorks XP Command View Advanced Edition software Device Manager
agent installation and configuration guide
HP StorageWorks XP Command View Advanced Edition software server administrator
guide for Device Manager and Provisioning
Manager HP StorageWorks XP Command
View Advanced Edition software quick installation guide HP StorageWorks XP Command View Advanced Edition software
Device Manager Help HP StorageWorks XP
Command View Advanced Edition software
Device Manager Help
XP Thin Provisioning Software
Designed to handle a variety of storage systems to simplify storage management operations and reduce costs. Works together with
Command View Advanced Edition software
Device Manager to provide the functionality
to integrate, manipulate, and manage storage using provisioning plans.
HP StorageWorks XP24000/XP20000 Thin
Provisioning Software User Guide
XP for Business
Continuity Manager Software
Enables mainframe users to make Point-inTime (PiT) copies of production data, without
interrupting the application or causing any
disruption to end-user operations; for such
uses as application testing, business intelligence, and disaster recovery for business
continuance.
HP StorageWorks XP for Business Continuity
Manager Software Installation GuideHP
StorageWorks XP for Business Continuity
Manager Software MessagesHP StorageWorks XP for Business Continuity Manager
Software Reference GuideHP StorageWorks
XP for Business Continuity Manager Software User Guide
HP StorageWorks XP Replication Manager
Software
Supports management of storage replication
(copy pair) operations, enabling users to
view (report) the configuration, change the
status, and troubleshoot copy pair issues.
Replication Manager is particularly effective
in environments that include multiple storage
systems or multiple physical locations, and
in environments in which various types of
volume replication functionality (such as XP
Business Copy and XP Continuous Access)
are used.
HP StorageWorks XP Replication Manager
Software HelpHP StorageWorks XP Replication Manager software installation and
configuration guideHP StorageWorks XP
Replication Manager software user guide
16
Overview of the HP XP24000/XP20000 Disk Array
Name
HP StorageWorks XP Performance Advisor Software
Description
Document
Collects, monitors, and displays in-depth
performance data at the component level
(LDEV, CHA, DKA, and DKC). Includes XPWatch, a real-time troubleshooting tool to
identify the root cause of performance issues.
HP StorageWorks XP Performance Advisor
Software command-line user interface user
guideHP StorageWorks XP Performance
Advisor Software installation guideHP StorageWorks XP Performance Advisor Software
troubleshooting guideHP StorageWorks XP
Performance Advisor Software user guide
XP24000/XP20000 Disk Array Owner Guide
17
18
Overview of the HP XP24000/XP20000 Disk Array
2 Hardware description of the HP
XP24000/XP20000 Disk Array
The HP StorageWorks XP series of disk arrays are high-performance RAID-capable disk array systems
used to store large quantities of data in an efficient and secure manner.
There are no single points of failure in the disk arrays. They include redundant logic assemblies,
controllers, power supplies, and dual-ported RAID disk drives, all of which can be removed or replaced
without interrupting access to data. This chapter describes the physical components of the disk array.
CAUTION:
Only your HP support representative can remove or replace hardware.
XP24000 system architecture
As Figure 2 shows, the basic XP24000 disk array consists of a DKC cabinet containing two main
sections: a logic box and an HDD box.
The logic box includes channel adapters (CHA) that provide server and other interfaces, disk adapters
(DKA) for controlling disk drives, cache memory adapters (CMA), and shared memory adapters
(SMA).
The HDD box contains the disk drives and a Fibre switch that interfaces the drives to the DKAs.
Additional disk drives can be added by installing up to four optional DKU cabinets containing multiple
additional HDD boxes.
Components interact by way of the data paths shown in the figure.
Also included but not shown in Figure 2 are the AC-DC power supplies and backup batteries.
XP24000/XP20000 Disk Array Owner Guide
19
Figure 2 XP24000 system architecture
.
XP20000 system architecture
Figure 3 shows, the basic XP20000 disk array consists of three main sections: the power supply, a
DKC, and a DKU.
The power supply section consists of the AC-DC power supplies and battery boxes.
The DKC consists of the channel adapters (CHAs), disk adapters (DKAs), cache memory adapters
(CMAs), and shared memory adapters (SMAs).
The DKU consists of the disk drives and Fibre Channel switches (FSW, not shown).
Each component is connected with the cache paths, SM paths, and/or disk paths shown in the figure.
20
Hardware description of the HP XP24000/XP20000 Disk Array
Figure 3 XP20000 system architecture
.
Physical assemblies
The XP24000 disk array includes the following major hardware assemblies (see Figure 4):
• One disk control frame (DKC)
• Zero to four disk array frames (DKUs)
To monitor and manage the array, a management server supplied by the customer is also required.
The following figure shows the disk array with the maximum of four DKUs. The DKC alone constitutes
the minimum configuration.
Figure 4 Disk array frames
.
XP24000/XP20000 Disk Array Owner Guide
21
Disk control frame
The DKC controls the disk array. It contains the control panel, connection hardware, power supplies,
SVP, and control boards for the disk array. It also contains up to 128 disk drives for the XP24000
and contains up to 120 disk drives for the XP20000.
DKC clusters
As the following figure shows, power and PCBs in the DKC are organized into two independent and
redundant clusters. Clustering helps ensure that if power or a PCB associated with one cluster stops
operating, the power and PCBs associated with the other cluster can continue to operate and support
the disk drives.
Cluster 1 consists of the assemblies at the front of the DKC.
Cluster 2 consists of the assemblies at the rear.
Figure 5 Front and rear PCB clusters in the DKC
.
22
Hardware description of the HP XP24000/XP20000 Disk Array
Unit emergency power off switch
The UNIT EMERGENCY POWER OFF switch is located on the back of the DKC cabinet. For more
information about this switch, see “Emergency power off” on page 39.
Service Processor (SVP)
The Service Processor inside the controller performs these functions:
• Collects performance data on the system for diagnostic testing and analysis
• Provides your HP support representative with maintenance access to the system
• Hosts system management software
Your HP support representative uses the SVP to configure, maintain, and upgrade the system software
and hardware. The SVP is not a customer-accessible component.
To protect your security, the SVP does not have access to any user data stored on array disks.
If you have extreme availability requirements, an optional second SVP is available.
Disk array frames
DKUs are optional cabinets that allow you to expand the disk array's storage capacity. DKUs contain
physical disk drives. The disk array can include up to four DKUs. Four DKUs fully populated with disk
drives (plus the disk drives in the DKC) provide up to 1152 total hard disk drives for the XP24000
and 240 total hard disk drives for the XP20000.
Disk drives
The DKC can hold up to 128 hard disk drives for the XP2400 and 120 hard disk drives for the
XP20000. Each DKU can contain up to 256 hard disk drives installed on the XP24000 and 240 hard
disk drives installed on the XP20000. There can be from zero to four DKU's. The disk array
automatically detects and corrects disk errors, and an HP support representative can replace or add
disk drives without disrupting user activity.
The disk array can contain up to 40 spare disk drives for the XP24000 and 16 spare disk drives on
the XP20000. Any of the spare disk drives can back up any other disk drive of equal rotational speed
and equal or lesser capacity, in any DKU, even if the failed disk and the spare disk are in different
array domains.
The XP24000/XP20000 disk arrays support several sizes of Fibre Channel, SATA, and solid state
disk drives. Fibre Channel drives are intended as a high-capacity, high-performance storage option
for high-priority applications.
As shown in Figure 6, disk drives install in the Hard Drive Unit (HDU) boxes mounted in the DKC and
DKU frames. Each box holds four groups of 16 drives for the XP24000 and holds four groups of 15
drives for the XP20000. The drives in the HDU connect to the DKA through a Fibre Switch (FSW) and
the FC-AL path. The lower drives in an HDU (FSW-L) connect to the DKA pair in Cluster 1, and the
upper drives in an HDU connect to the DKA pair in Cluster 2.
XP24000/XP20000 Disk Array Owner Guide
23
Figure 6 Disk drive installation in the HDU box
.
Figure 7 shows how the disk adapters connect to the HDUs in a fully expanded system.
Figure 7 DKA and HDU interconnections
.
RAID options
The disk array supports RAID1 (2D+2D or 4D+4D), RAID5 (3D+1P or 7D+1P), and RAID6 (6D+2P)
array groups. RAID levels may be intermixed, as illustrated by Figure 8.
24
Hardware description of the HP XP24000/XP20000 Disk Array
Figure 8 Intermixed RAID groups
.
Backup batteries
The XP24000/XP20000 disk arrays use batteries and two modes of backup operation to provide
backup power protection for cache memory, shared memory, the DKAs, CHAs, and disk drives. If
AC input power is lost, the disk array continues normal operation for 200 ms or 1 minute, depending
on whether the disk array is set for Backup Mode or De-stage Mode. See Figure 9.
If Backup Mode is selected and AC power is lost for more than 200 ms, the disk array enters the
Backup Mode, which maintains the contents of cache and shared memory for 36 to 48 hours,
depending on the amount of cache memory installed. This mode is the default and the only available
mode for the base battery configuration.
If De-stage Mode is selected and sufficient optional DKC and DKU backup batteries are installed, the
batteries maintain normal operation for 1 minute. After 1 minute without AC power, the disk array
executes the De-stage Mode, which saves the contents of cache and shared memory to disk, maintains
the contents of cache and shared memory for 16 to 24 hours, and powers down the system. Even if
power is restored shortly after one minute, the de-stage and power down processes continue until
they are completed.
XP24000/XP20000 Disk Array Owner Guide
25
Figure 9 Battery de-staging and backup modes
.
When AC power is restored, the disk array powers on again automatically if the AUTO POWER-ON
jumper is set to ENABLE. If the jumper is set to DISABLE, the disk array must be manually powered
on again using the control panel PS ENABLE and PS ON/OFF switches. Before installation HP
representatives will help you determine the best battery mode and power-on mode for your configuration
and will configure the selected mode for you.
Operating specifications
This section provides some general specifications. For complete specifications, see the HP StorageWorks
Disk Array Site Preparation Guide available on the HP storage manuals website:
http://www.hp.com/support/manuals
XP24000/XP20000 hardware specifications
The following tables provide selected hardware specifications for the XP24000/XP20000 Disk Arrays.
For additional specifications, see the HP StorageWorks Disk Array Site Preparation Guide.
Table 4 XP24000 selected hardware specifications
Feature
Specification
Power
Single-phase, 50 or 60 Hz, or 3-phase
DKC/DKU
One XP24000 DKC, zero to four XP24000 DKUs
Maximum hard disk drives
1152
Maximum spare disk drives
40
Maximum array groups/subsystem
287
26
Hardware description of the HP XP24000/XP20000 Disk Array
Feature
Maximum storage capacity (not including
external storage)
Cache
Specification
332 TB (where 1 TB = 1012 bytes)
(Usable storage is always less than the maximum raw storage
capacity.)
4 to 512 GB
• 73 GB 15000 RPM FC
• 73 GB Solid State
• 146 GB 15000 RPM FC
• 146 GB Solid State
• 200 GB Solid State
• 300 GB 10000 RPM FC
Hard disk and flash drives
• 300 GB 15000 RPM FC
• 400 GB Solid State
• 750 GB 7200 RPM SATA
• 400 GB 10000 RPM FC
• 1TB 7.2k SATA Array Group
• 450GB 15K RPM HDD
• 8 Port 8 GB FC CHA
• 8 GB LW Transceiver
Shared memory
2 to 32 GB (Available shared memory depends on the configuration)
Up to two adapters supporting two DKA pairs (4 DKAs total) per
DKU. DKAs are sold in sets of 2 pairs.
• 2 DKA pairs = up to 256 HDDs, 16 paths
Disk Adapters (DKAs)
• 4 DKA pairs = up to 640 HDDs, 32 paths
• 6 DKA pairs = up to 768 HDDs, 48 paths
• 8 DKA pairs = up to 1152 HDDs, 64 paths
1 to 14 adapters (each DKA set above 4 reduces the maximum
number of CHAs by two)
Channel Adapters (CHAs)
• Fibre Channel: up to 224 ports
• ESCON: up to 112 ports
• FICON: up to 112 ports
Configuration disk
XP24000-specific
SVP code
XP24000-specific
High-availability secondary SVP
Optionally available
• RAID1 (2D+2D)
• RAID1 (4D+4D)
RAID level
• RAID5 (3D+1P)
• RAID5 (7D+1P)
• RAID6 (6D+2P)
LDEVs
Up to 64K
XP24000/XP20000 Disk Array Owner Guide
27
Feature
Specification
LUNs per port
Up to 1024
Table 5 XP20000 selected hardware specifications
Feature
Specification
Power
Single-phase, 50 or 60 Hz
DKC/DKU
One XP20000 DKC, zero to one XP20000 DKU
Maximum hard disk drives
240
Maximum spare disk drives
16
Maximum array groups/subsystem
287
Maximum storage capacity (excluding
external storage)
Cache
69.2 TB (where 1 TB = 1012 bytes)
(Usable storage is always less than the maximum raw storage
capacity.)
4 to 128 GB
• 73 GB 15000 RPM FC
• 73 GB Solid State
• 146 GB 15000 RPM FC
• 146 GB Solid State
• 200 GB Solid State
• 300GB 10000 RPM HDD
Available hard disk drives
• 300 GB 10000 RPM or 15,000 RPM FC
• 400 GB 10,000 RPM or 15,000 RPM FC
• 400 GB Solid State
• 750 GB 7200 RPM SATA
• 1TB 7.2k SATA Array Group
• 450GB 15000 RPM HDD
• 600 GB 15K FC HDD
• 2TB 7.2K HDD
Shared memory
2 to 16 GB (Available shared memory depends on the configuration)
Disk Adapters (DKAs)
Up to two adapters supporting two DKA pairs (4 DKAs total) per
DKU. DKAs are sold in sets of 2 pairs.
• 1 DKA pair = up to 240 HDDs
1 to 6 adapters (each DKA set above 4 reduces the maximum
number of CHAs by two)
Channel Adapters (CHAs)
• Fibre Channel: up to 48 ports
• ESCON: up to 24 ports
• FICON: up to 24 ports
Configuration disk
28
XP20000-specific
Hardware description of the HP XP24000/XP20000 Disk Array
Feature
Specification
SVP code
XP20000-specific
High-availability secondary SVP
Optionally available
• RAID1 (2D+2D)
• RAID1 (4D+4D)
RAID level
• RAID5 (3D+1P)
• RAID5 (7D+1P)
• RAID6 (6D+2P)
LDEVs
Up to 64K
LUNs per port
Up to 1024
Temperature specifications
Table 6 XP24000/XP20000 temperature specifications
Temperature range type
Range
Recommended operating temperature
range
21 to 24 degrees C, 70 to 75 degrees F
Operating temperature
16 to 32 degrees C, 61 to 89 degrees F
Nonoperating temperature range
–10 to +43 degrees C, 14 to 109 degrees F
Shipping and storage temperature
(product packed in factory packing)
–25 to +60 degrees C, –13 to +140 degrees F
Temperature shock immunity (maximum
rate of temperature change)
10 degrees C per hour, 18 degrees F per hour
Over-temperature warning
At 40 degrees C, 104 degrees F
Over-temperature shutdown
At 60 degrees C, 140 degrees F
Humidity specifications
Protect the disk array from excessive humidity. You should not observe condensation in or around the
product under any conditions. There is no procedure for recovery from moisture condensation.
Table 7 XP24000/XP20000 humidity specifications
Humidity range type
Noncondensing relative humidity (RH)
Recommended operating humidity range at 22 degrees C (71 degrees
F)
50% to 55%
Operating humidity range at 22 degrees C (71 F)
20% to 80%
Nonoperating humidity range
8% to 90%
XP24000/XP20000 Disk Array Owner Guide
29
Humidity range type
Noncondensing relative humidity (RH)
Shipping and storage humidity range (product packed in factory packing)
5% to 95%
Mechanical vibration specifications
Maximum operating acceleration is 0.05G at a frequency range of 10 to 300 Hz.
XP24000/XP20000 AC line voltage requirements
Each DKC or DKU has two or four power cords. In case of a failure of the power source for one cord,
the power requirements, and therefore the current requirement for the remaining power cord, will
double.
For details about cabling and connectors, current requirements, and other electrical specifications,
see the HP StorageWorks XP24000/XP20000 Disk Array Site Preparation Guide.
Table 8 XP24000 DKC power specifications for 50-amp, 50 or 60 Hz, single-phase
Parameter
Number of
power cords
Recommended
circuit breakers
Number of
circuit breakers
200 VAC
50/60 Hz
208 VAC
60 Hz
220 VAC
50 Hz
230 VAC
50/60 Hz
240 VAC
50 Hz
2
2
2
2
2
50A
50A
50A
50A
50A
2
2
2
2
2
Table 9 XP24000 DKC power specifications for 30-amp, 50 or 60 Hz, single-phase
Parameter
Number of
power cords
Recommended
circuit breakers
30
200 VAC
50/60 Hz
208 VAC
60 Hz
220 VAC
50 Hz
230 VAC
50/60 Hz
240 VAC
50 Hz
4
4
4
4
4
30A
30A
30A
30A
30A
Hardware description of the HP XP24000/XP20000 Disk Array
Parameter
Number of
circuit breakers
200 VAC
50/60 Hz
208 VAC
60 Hz
220 VAC
50 Hz
230 VAC
50/60 Hz
240 VAC
50 Hz
4
4
4
4
4
Table 10 XP24000 DKC power specifications for 30-amp, 50 or 60 Hz, three-phase
Parameter
Number of
power cords
Recommended
circuit breakers
Number of
circuit breakers
200
VAC
50/60
Hz
208
VAC
60 Hz
220
VAC
50 Hz
230
VAC
50/60
Hz
240
VAC
50 Hz
380
VAC
50 Hz
400
VAC
50 Hz
415
VAC
50 Hz
2
2
2
2
2
2
2
2
30A
30A
30A
30A
30A
30A
30A
30A
2
2
2
2
2
2
2
2
Table 11 XP24000 DKU power specifications for 50-amp, 50 or 60 Hz, single-phase
Parameter
Number of
power cords
Recommended
circuit breakers
Number of
circuit breakers
200 VAC
50/60 Hz
208 VAC
60 Hz
220 VAC
50 Hz
230 VAC
50/60 Hz
240 VAC
50 Hz
2
2
2
2
2
50A
50A
50A
50A
50A
2
2
2
2
2
Table 12 XP24000 DKU power specifications for 30-amp, 50 or 60 Hz, single-phase
Parameter
Number of
power cords
Recommended
circuit breakers
200 VAC
50/60 Hz
208 VAC
60 Hz
220 VAC
50 Hz
230 VAC
50/60 Hz
240 VAC
50 Hz
4
4
4
4
4
30A
30A
30A
30A
30A
XP24000/XP20000 Disk Array Owner Guide
31
Parameter
Number of
circuit breakers
200 VAC
50/60 Hz
208 VAC
60 Hz
220 VAC
50 Hz
230 VAC
50/60 Hz
240 VAC
50 Hz
4
4
4
4
4
Table 13 XP24000 DKU power specifications for 30-amp, 50 or 60 Hz, three-phase
Parameter
Number of
power cords
Recommended
circuit breakers
Number of
circuit breakers
200
VAC
50/60
Hz
208
VAC
60 Hz
220
VAC
50 Hz
230
VAC
50/60
Hz
240
VAC
50 Hz
380
VAC
50 Hz
400
VAC
50 Hz
415
VAC
50 Hz
2
2
2
2
2
2
2
2
30A
30A
30A
30A
30A
30A
30A
30A
2
2
2
2
2
2
2
2
Table 14 XP20000 DKC power specifications for 20-amp, 50 or 60 Hz, single-phase
Parameter
Number of
power cords
Recommended
circuit breakers
Number of
circuit breakers
200 VAC
50/60 Hz
208 VAC
60 Hz
220 VAC
50 Hz
230 VAC
50/60 Hz
240 VAC
50 Hz
4
4
4
4
4
20A
20A
20A
20A
20A
4
4
4
4
4
Table 15 XP20000 DKU power specifications for 30-amp, 50 or 60 Hz, single-phase
Parameter
Number of
power cords
Recommended
circuit breakers
Number of
circuit breakers
32
200 VAC
50/60 Hz
208 VAC
60 Hz
220 VAC
50 Hz
230 VAC
50/60 Hz
240 VAC
50 Hz
4
4
4
4
4
30A
30A
30A
30A
30A
4
4
4
4
4
Hardware description of the HP XP24000/XP20000 Disk Array
3 Operating the HP XP24000/XP20000
Disk Array
During normal operations, the disk array does not require your intervention and you should not attempt
to open the disk array cabinets.
The disk array reports any service information messages (SIMs) to the SVP and the Device Manager
server. If the array is set up for remote support using either the modem or Internet option, the SVP
automatically reports SIMs to the HP Storage Technology Center (STC). For more information about
SIMs and the remote support capabilities, including the modem-based and Internet-based options,
see “HP StorageWorks XP Continuous Track” on page 43, and also “Failure detection and reporting
process” on page 45.
General safety guidelines
Carefully read these safety guidelines and follow them when working with the disk array.
• Fully understand and follow all hazard warnings in this guide and on warning labels on the disk
array. These hazard warnings help you to prevent or reduce the risk of death, personal injury, or
product damage. Hazard warnings include alert headings consisting of an alert symbol and the
word Caution or Warning.
CAUTION:
This indicates a hazardous situation which, if not avoided, will or can result in serious product
damage or loss of data.
WARNING!
This indicates a potentially hazardous situation which, if not avoided, can result in death or serious
injury.
• Replace any warning label that becomes dirty or starts peeling off.
• Keep in mind that the hazard warnings in this guide and on the disk array cannot cover every
possible hazard because it is impossible to predict and evaluate all potentially hazardous circumstances. Be alert and use common sense. If you have any questions, contact your HP support
representative.
• Follow the safety guidelines and procedures in all documentation for this and related products.
XP24000/XP20000 Disk Array Owner Guide
33
CAUTION:
Disk array maintenance must be done only by trained and qualified HP support representatives.
Only an HP support representative can power off the disk array, except in an emergency.
CAUTION:
Do not perform any procedures not described in this guide. If you have any questions or concerns,
contact your HP support representative.
WARNING!
Do not touch areas marked HAZARDOUS, even with the power off. These areas contain
high-voltage power.
CAUTION:
If you detect any abnormal noise, smell, or smoke coming from the disk array, immediately power
off the disk array by following the emergency power off procedure later in this chapter. For routine
power off in non-emergency situations, contact your HP support representative.
CAUTION:
Do not power off the system unless it is an emergency situation and you follow the procedure for
Emergency power off.
CAUTION:
Keep the front and rear doors closed at all times.
CAUTION:
Keep the tops and sides of the cabinets clear to allow air to flow properly.
CAUTION:
Use the supplied power cord. The power cord may not be used with other products.
34
Operating the HP XP24000/XP20000 Disk Array
Managing the disk array
The Remote Web Console software allows browser-based management of a single disk array. You
can install the optional HP StorageWorks XP Array Manager software and the HP StorageWorks
Command View XP Advanced Edition software on an optional management server to enable additional
management capabilities, including the ability to manage multiple arrays. You can also install other
HP StorageWorks XP Disk Array software on the management server.
You may use an existing host (such as your storage administrator's PC) as the management server
provided that it meets system requirements for the software you plan to deploy. To protect your security,
the disk array management software does not have access to user data stored on the disk array. The
management server connects to the disk array(s) using an Ethernet LAN connection, as shown in
Figure 10.
Figure 10 Disk array management connections
.
1. Host computer
2. Host connection (Fibre Channel or other connection type)
3. DKC
4. Ethernet LAN
5. Management server
XP24000/XP20000 Disk Array Owner Guide
35
Control panel and LED descriptions
Once the disk array is powered on and running normally, no user operations are required at the
control panel, except when you are instructed by your HP support representative.
Figure 11 shows the control panel location and layout. Table 16 explains the control panel functions.
Figure 11 Control panel and LED descriptions
.
Table 16 Control panel control and LED descriptions
Item
Label
Indicator
Description
During normal operation, this LED should be on.
1
SUB-SYSTEM
READY
LED (Green)
• ON: Input/output operation on the channel interface
is enabled.
• OFF: The system is not accepting data.
36
Operating the HP XP24000/XP20000 Disk Array
Item
Label
Indicator
Description
During normal operation, this LED should be off.
• ON: One or more of the following:
• DKC DC power is under voltage.
• DC power is over current.
2
SUB-SYSTEM
ALARM
• The temperature is abnormally high.
LED (Red)
• An unrecoverable failure has occurred. If the disk
array is set up for remote support, your HP support
representative is notified automatically. If the disk
array is not set up for remote support, place a service
call to HP to have the message evaluated to determine
if any action is required.
• BLINKING: DKU DC power is under voltage.
During normal operation, this LED should be off.
3
SUB-SYSTEM
MESSAGE
LED (Amber)
• ON: A service information message (SIM) has been
issued from either storage cluster. If the disk array is
set up for remote support, your HP support representative is notified automatically. If the disk array is not
set up for remote support, place a service call to HP
to have the message evaluated to determine if any
action is required.
• BLINKING: An SVP failure has occurred. The disk array will continue to operate normally. Place a service
call to HP to ensure notification. SVP failures may not
be reported automatically to STC.
4
5
6
SUB-SYSTEM RESTART
REMOTE MAINTENANCE PROCESSING
REMOTE MAINTENANCE ENABLE/DISABLE
Switch
LED (Amber)
Used to recover from a FICON/ESCON port failure. Do
not change the switch position unless directed to do so
by HP service personnel.
During normal operation, this LED may be on if remote
maintenance is allowed (the REMOTE MAINTENANCE
ENABLE/DISABLE switch is in the ENABLE position).
• ON: Remote maintenance is in progress. An HP support representative is probably working on the system,
but the system is online and accepting data.
Used to permit remote service maintenance. During normal operation, this switch should be in the ENABLE position.
Switch
• DISABLE: Remote maintenance is disabled.
• ENABLE: An HP support representative can perform
remote maintenance. Do not change the switch position unless directed to do so by HP service personnel.
During normal operation, this LED should be on.
7
EMERGENCY
LED (Red)
• ON: The UNIT EMERGENCY POWER OFF switch
on the back of the disk array cabinet is in the ON
position.
• OFF: The UNIT EMERGENCY POWER OFF switch
is in the OFF position. Place a service call to HP to
have an HP support representative reset the switch.
XP24000/XP20000 Disk Array Owner Guide
37
Item
Label
Indicator
Description
During normal operation, this LED should be on.
8
BS-ON
LED (Amber)
• ON: The disk array is plugged in and receiving power
from the primary AC outlet. The SVP is receiving
power from the outlet.
• OFF: The disk array is not receiving power from the
primary AC outlet. Check the electrical outlets in your
building.
During normal operation, this LED should be on.
9
PS-ON
LED (Green)
• ON: The PS ON/OFF switch is on. If the SUB-SYSTEM
READY light (1) is also on, the disk array is ready to
receive data.
• OFF: The PS ON/OFF switch is off and the disk array
is not ready to receive data.
Used to enable the PS ON/OFF switch (11). During
normal operation, this switch should be in the “Disable”
position (opposite the ENABLE position).
10
PS ENABLE
Switch
• ENABLE: The PS ON/OFF switch can be used.
• DISABLE: The PS ON/OFF switch cannot be used.
Do not change the switch position unless directed to
do so by HP service personnel.
Used to power on/off the disk array. During normal operation, this switch should be in the ON position.
The switch functions only if:
11
PS ON/OFF
Switch
the PS ENABLE switch (10) is in the ENABLE position,
AND the PS REMOTE/LOCAL switch (12) is in the LOCAL
position. Do not change the switch position unless
directed to do so by HP service personnel.
Determines how the disk array is powered on or off.
During normal operation, this switch may be in either
position, depending on your operating environment.
12
PS
REMOTE/LOCAL
Switch
• REMOTE: Disk array is powered on/off by the instructions of the host PCI (mainframe only).
• LOCAL: Disk array is powered on/off by the PS
ON/OFF switch (11). Do not change the switch position unless directed to do so by HP service personnel.
13
CHK RST
Switch
Used by an HP support representative to test the functioning of the LEDs on the control panel or to reset alarms.
Do not change the switch position unless directed to do
so by HP service personnel.
Powering down the disk array
Two situations may arise when you need to power down the system:
• Planned power off
• Emergency power off
38
Operating the HP XP24000/XP20000 Disk Array
Planned power off
Occasionally, you may need to plan a site power outage, such as during alterations to the data
center, inspections, or work by the electric company. If a scheduled power outage will affect the disk
array, contact your HP support representative to schedule a planned power off.
CAUTION:
Only a trained HP support representative can shut down and power off the disk array.
Do not attempt to power down the disk array other than during an emergency.
Emergency power off
In an emergency, it is critical to remove power to the disk array as quickly as possible.
CAUTION:
Performing the emergency power off procedure immediately shuts down the disk array, neglecting
the array's normal power off sequence. Jobs in process are aborted and their integrity after recovery
is not guaranteed. Use this power off method only in an emergency. Only a qualified HP support
representative can reset the switch and restore power to the disk array.
Emergency situations in which you should consider performing the emergency power off procedure
are:
• A physical location catastrophe such as a flood, hurricane, tornado, or earthquake
• Any circumstance that presents the threat of injury or death to a person
• You detect any smoke, abnormal loud noise, or smell coming from the disk array
To power off the disk array in an emergency
1.
Locate the UNIT EMERGENCY POWER OFF switch on the back side of the DKC, as shown in
Figure 12.
Figure 12 Emergency power-off switch location
.
XP24000/XP20000 Disk Array Owner Guide
39
2.
Pull the switch up and then out towards you.
The disk array shuts down immediately. The UNIT EMERGENCY POWER OFF switch mechanically
locks itself in the off position to prevent anyone from restoring power in a potentially hazardous
situation.
WARNING!
The UNIT EMERGENCY POWER OFF switch provides only partial power off capability. AC input
power remains present at the primary circuit.
3.
When the emergency situation is over, call the HP technical support center. Only a qualified HP
support representative can reset the switch and restore power to the disk array.
Recovering from an unplanned power outage
Unplanned power outages occur when the primary building power is lost due to electrical blackouts,
thunderstorm activity, or similar occurrences, and input AC power is not received by the disk array.
The disk array will maintain its state and recover when power is restored.
The disk array cache is powered by backup batteries that will maintain the array state for up to 48
hours, depending on the selected battery operation mode. For more information, see “Backup
batteries” on page 25.
Manual restart after power is restored
CAUTION:
After power is restored to your site and before restoring power to the disk array, HP recommends
that you have an electrician verify the power to ensure that all phases are restored and input power
to the disk is stable.
Contact your HP representative for help recovering from a power outage.
To restart the disk array manually
1.
40
Move the PS ENABLE switch to the ENABLE position.
Operating the HP XP24000/XP20000 Disk Array
2.
Move the PS ON/OFF switch to the ON position.
The following LED power sequence occurs:
• BS-ON turns amber.
• PS-ON turns green.
• SUB-SYSTEM MESSAGE may turn amber if the disk array is not configured for remote support.
This indicates the system has produced a service information message because of the power
outage.
• SUB-SYSTEM READY turns green, signifying the system is ready.
CAUTION:
Powering on the disk array can take up to 10 minutes and is complete only when the
SUB-SYSTEM READY LED turns green.
3.
Move the PS ENABLE switch to “DISABLE” (opposite ENABLE).
Automatic restart when power is restored
CAUTION:
As with all sophisticated electronic equipment, unstable power conditions during a restart can cause
problems. HP recommends automatic power on restart only if the power to the disk array is subject
to power conditioning equipment, such as an uninterruptible power supply (UPS), to ensure that the
power restored to the disk array is stable.
If your site does not have a UPS, HP recommends that the disk array be configured for manual restart,
meaning the POWER ENABLE switch on the control panel is in the DISABLE position. After a power
outage, follow the manual restart procedure only after power has been restored and verified stable.
With automatic restart enabled, the disk array automatically restarts and returns to service when
power is restored.
During the automatic restart, the following LED power sequence occurs:
• BS-ON turns amber.
• PS-ON turns green.
• SUB-SYSTEM MESSAGE may turn amber if the disk array is not configured for remote support.
This indicates the system has produced a service information message because of the power outage.
• SUB-SYSTEM READY turns green, signifying the system is ready.
CAUTION:
Powering on the disk array can take up to 10 minutes and is complete only when the SUB-SYSTEM
READY LED turns green.
To enable automatic restart:
•
Move the AUTO PS-ON ENABLE/DISABLE switch to the ENABLE position.
XP24000/XP20000 Disk Array Owner Guide
41
42
Operating the HP XP24000/XP20000 Disk Array
4 Troubleshooting the HP
XP24000/XP20000 Disk Array
Service information messages
The system generates service information messages (SIMs) to identify normal operations, service
requirements, and failures. SIMs are generated by the SVP and the system microprocessors. Your HP
support representative uses the SIMs to monitor and troubleshoot the system as explained below. You
can view SIMs using the system's management software.
HP StorageWorks XP Continuous Track (C-Track)
The HP StorageWorks XP Continuous Track (C-Track) remote support solution detects and reports
system problems to the HP Storage Technology Centers (STCs). C-Track transmits heartbeats, system
information messages (SIMs), and configuration information for remote data collection and monitoring
purposes. C-Track also enables the STCs to remotely diagnose issues and perform maintenance, if
you permit remote device access (RDA).
The C-Track solution offers an Internet connectivity option for the XP24000/XP20000 disk arrays in
addition to a modem connectivity option.
The C-Track solution offers an Internet connectivity option for the XP24000/XP20000 disk arrays in
addition to a modem connectivity option. If you choose the Internet-based remote support solution,
additional infrastructure and site preparation are required. This additional preparation may include
server and router requirements, and HP and the customer may both have implementation responsibilities.
For more information about the C-Track Internet-based solution, ask your HP representative.
If you use the modem connectivity option, you can disable C-Track remote diagnosis and maintenance
by setting the Remote Maintenance Enable/Disable switch to the Disable position. When the switch
is in this position, HP technical support cannot perform remote disk array maintenance. However, the
C-Track remote data collection and monitoring functions remain enabled.
If you use the Internet connectivity option, you can disable remote diagnosis and maintenance by
configuring the Customer Access System (CAS) component of the solution to prevent external login
by HP support personnel. The Remote Maintenance Enable/Disable switch position is irrelevant for
the Internet connectivity option, and the C-Track remote data collection and monitoring functions
remain enabled even though remote diagnosis and maintenance are disabled.
By implementing certain configuration settings, HP can disable remote data collection and monitoring,
or remote diagnosis and maintenance, or both.
HP Insight Remote Support Advanced
HP strongly recommends that you install HP Insight Remote Support software to complete the installation
or upgrade of your product and to enable enhanced delivery of your HP Warranty, HP Care Pack
Service or HP contractual support agreement. HP Insight Remote Support supplements your monitoring,
XP24000/XP20000 Disk Array Owner Guide
43
24x7 to ensure maximum system availability by providing intelligent event diagnosis, and automatic,
secure submission of hardware event notifications to HP, which will initiate a fast and accurate
resolution, based on your product’s service level. Notifications may be sent to your authorized HP
Channel Partner for on-site service, if configured and available in your country. The HP Insight Remote
Support products available for the XP24000/XP20000 disk arrays are described in Table
17 on page 44.
NOTE:
HP Insight Remote Support Standard is not supported on XP Disk Arrays.
Table 17 HP XP24000/XP20000 Disk Array Remote Support Products
HP
Product
Description
Application
AE241A
HP XP Remote
Device Access
w/LAN Support (Recommended)
For customers that fully commit to use HP Remote Support. It uses HP Insight
Remote Support for XP Remote Device Monitoring utilizing LAN/Internet
connectivity and Remote Device Access Support. This configuration is required to meet the objectives of XP disk array’s Internet connectivity with
Remote Device Access initiative and prerequisites for Critical Support contracts. HP recommends that the AE241A product with Internet connectivity
should be utilized for all new XP installations, to ensure the optimal support
model and highest TCE.
AE242A
HP XP No Remote
Device Access
w/LAN Supp (Default)
For customers that commit to utilize Internet and Insight Remote Support
connectivity for XP Remote Device Monitoring but will not allow for Remote
Device Access to the XP array from HP for proactive and critical support
processes. With no Remote Device Access, Critical Support contract prerequisites cannot be met.
HP XP Modem Remote Support
For customers that will commit to utilize remote support connectivity via
modem rather than LAN/Internet connectivity. Modem is older technology
that is significantly less reliable than LAN/Internet connectivity, is less capable, does not support some features for Remote Device Access, and generally should not be considered for new installations. The AE243A product
is only allowed for customers that have valid reasons for not using Internet
connectivity. The initial cost of this configuration only covers the additional
warranty support cost to HP during warranty period. Other additional costs
can also be incurred for support contracts for customers who do not have
LAN configured. Factory Authorization will be required to order this product.
Proof of a valid reason that Internet connectivity is not allowed must be
provided for Factory Authorization approval.
HP XP Mission Critical No LAN Support
For a customer whose strict security protocols specifically prohibit inbound/
outbound traffic to/from the data center and thus will not allow Remote
Support connection by either modem or LAN/internet connectivity; but does
have Mission Critical Services with Customer Engineer onsite included in
the terms of the support contract. Factory Authorization will be required to
order this product. Proof of valid Customer Engineer onsite Mission Critical
support contract must be provided for Factory Authorization approval.
AE243A
AE244A
44
Troubleshooting the HP XP24000/XP20000 Disk Array
HP
Product
AE245A
Description
Application
HP XP No Mission
Critical No LAN
Support
For a customer whose strict security protocols specifically prohibit inbound/
outbound traffic to/from the data center and thus will not allow Remote
Support connection by either modem or LAN and does not have a Mission
Critical Services on-site contract. The added cost of this configuration only
covers the additional warranty support cost to HP during warranty period.
Other additional costs can also be incurred for support contracts for customers who do not have remote support configured.
Details for both versions are available at:
http://www.hp.com/go/insightremotesupport
To download the software, go to Software Depot:
http://www.software.hp.com
Select Insight Remote Support from the menu on the right.
Failure detection and reporting process
If a failure occurs in the system, the failure is detected and reported to the system log, the SIM log,
and HP technical support, as shown in Figure 13.
Figure 13 Failure reporting process
.
1. A failure is detected in the system.
XP24000/XP20000 Disk Array Owner Guide
45
2. The failure is reported to the system.
3. The system stores the failure information in the system log.
4. The generated SIMs are stored on the system for use by HP technical support representatives, and logged
on the management server as remote SIMs (R-SIMs). If the system is not set up for remote support, when a SIM
is generated, the amber message LED on the system control panel turns on. Call HP to determine the reason
for the message.
5. If the system is set up for remote support, C-Track reports the SIMs to HP technical support through a dedicated
dialup or secure Internet connection. SIMs are classified according to severity: service, moderate, serious, or
acute. Service and moderate levels do not require immediate attention and are addressed during routine
maintenance. These failures are often corrected before the failure becomes apparent. Serious and acute levels
are reported immediately to HP support to ensure that the problem is addressed as soon as possible.
46
Troubleshooting the HP XP24000/XP20000 Disk Array
5 Support and other resources
Related documentation
The following documents provide related information:
• HP StorageWorks XP24000/XP20000 Disk Array Site Preparation Guide
• HP StorageWorks XP24000/XP20000 Remote Web Console User Guide
• HP StorageWorks XP Disk Array Mainframe Host Attachment and Operations Guide
You can find these documents on the HP Manuals website:
http://www.hp.com/support/manuals
In the Storage section, click Disk Storage Systems and then select a product.
HP technical support
For worldwide technical support information, see the HP support website:
http://www.hp.com/support
Before contacting HP, collect the following information:
•
•
•
•
•
•
Product model names and numbers
Technical support registration number (if applicable)
Product serial numbers
Error messages
Operating system type and revision level
Detailed questions
Customer self repair
HP customer self repair (CSR) programs allow you to repair your StorageWorks product. If a CSR
part needs replacing, HP ships the part directly to you so that you can install it at your convenience.
Some parts do not qualify for CSR. Your HP-authorized service provider will determine whether a
repair can be accomplished by CSR.
For more information about CSR, contact your local service provider. For North America, see the CSR
website:
http://www.hp.com/go/selfrepair
This product has no customer replaceable components.
Rack stability
Rack stability protects personnel and equipment.
XP24000/XP20000 Disk Array Owner Guide
47
WARNING!
To reduce the risk of personal injury or damage to equipment:
•
•
•
•
•
Extend leveling jacks to the floor.
Ensure that the full weight of the rack rests on the leveling jacks.
Install stabilizing feet on the rack.
In multiple-rack installations, fasten racks together securely.
Extend only one rack component at a time. Racks can become unstable if more than one component
is extended.
Subscription service
HP recommends that you register your product at the Subscriber's Choice for Business website:
http://www.hp.com/go/e-updates
After registering, you will receive email notification of product enhancements, new driver versions,
firmware updates, and other product resources.
HP websites
For additional information, see the following HP websites:
•
•
•
•
http://www.hp.com
http://www.hp.com/go/storage
http://www.hp.com/support/manuals
http://www.hp.com/storage/spock
Documentation feedback
HP welcomes your feedback.
To make comments and suggestions about product documentation, please send a message to
storagedocsFeedback@hp.com. All submissions become the property of HP.
48
Support and other resources
6 Regulatory statements for the HP
XP24000/XP20000 Disk Array
FCC EMC statement (USA)
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference, in which case
the user will be required to correct the interference at his or her own expense. The end user of this
product should be aware that any changes or modifications made to this equipment without the
approval of Hewlett-Packard could result in the product not meeting the Class A limits, in which case
the FCC could void the user's authority to operate the equipment.
Hewlett-Packard's device certification tests were conducted with HP computer systems and HP shielded
cables, such as those you received with your product. Changes or modifications not expressly approved
by Hewlett-Packard could void the user's authority to operate the equipment. Cables used with this
device must be properly shielded to comply with the requirements of the FCC.
Notice for the European Union
This product complies with the following EU directives:
• Low Voltage Directive 2006/95/EC
• EMC Directive 2004/108/EC
Compliance with these directives implies conformity to applicable harmonized European standards
(European Norms) which are listed on the EU Declaration of Conformity issued by Hewlett-Packard
for this product or product family.
This compliance is indicated by the following conformity marking placed on the product:
This marking is valid for non-Telecom products and
EU harmonized products (e.g., Bluetooth).
Certificates can be obtained from http://www.hp.com/go/certificates.
Hewlett-Packard GMbH, HQ-TRE, Herrenberger Strasse 140, 71034 Boeblingen, Germany
XP24000/XP20000 Disk Array Owner Guide
49
IEC statement (worldwide)
This is a Class A product. In a domestic environment this product may cause radio interference, in
which case the user may be required to take adequate measures.
EMC statement (Canada)
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment
Regulations.
Cet appareil numérique de la Classe A respecte toutes les exigences du Règlement sur le matériel
brouilleur du Canada.
Spécification ATI Classe A (France)
DECLARATION D'INSTALLATION ET DE MISE EN EXPLOITATION d'un matériel de traitement de
l'information (ATI), classé A en fonction des niveaux de perturbations radioélectriques émis, définis
dans la norme européenne EN 55022 concernant la Compatibilité Electromagnétique.
VCCI EMC statement (Japan)
BSMI EMC statement (Taiwan)
RRL EMC statement (Korea)
50
Regulatory statements for the HP XP24000/XP20000 Disk Array
Harmonics conformance (Japan)
German noise declaration
XP24000/XP20000: Schalldruckpegel Lp = 70 dB(A)
Am Arbeitsplatz (operator position)
Normaler Betrieb (normal operation)
Nach ISO 7779:1988 / EN 27779:1991 (Typprüfung)
Laser safety
When equipped with native Fibre Channel adapters, this product contains a laser internal to the
Optical Link Module (OLM) contained on the Channel Adapter boards for connection to a fibre
communications network.
In the USA, the OLM is certified as a Class 1 laser product conforming to the PRT requirements
contained in the Department of Health and Human Services (DHHS) regulation 21 CFR, Subchapter
J. The certification is indicated by a label on the plastic OLM housing. Outside the USA, the OLM is
certified as a Class 1 laser product conforming to the requirements contained in IEC 825-1:1993
and EN 60825-1:1994, including Amendment 11:1996.
The following figure shows the Class 1 information label that appears on the plastic housing of the
OLM.
CLASS 1 LASER PRODUCT
Complies with
21 CFR 1040.10 and 1040.11
Each communications port consists of a transmitter and receiver optical subassembly. The transmitter
subassembly contains an internal semiconductor laser diode in the wavelength range of 770 to 850
nanometers. In the event of a break anywhere in the fibre path, the OLM control system prevents laser
emissions from exceeding Class 1 levels. Class 1 laser products are not considered hazardous.
WARNING!
There are no user maintenance operations, service operations, or adjustments to be performed on
the Optical Link Module.
Japan DENAN law cordset caution
Please use the supplied power cord. The power cord may not be used with other products.
XP24000/XP20000 Disk Array Owner Guide
51
European WEEE statements
Czech
Danish
Dutch
English
52
Regulatory statements for the HP XP24000/XP20000 Disk Array
Estonian
Finnish
French
German
XP24000/XP20000 Disk Array Owner Guide
53
Greek
Hungarian
Italian
Latvian
54
Regulatory statements for the HP XP24000/XP20000 Disk Array
Lithuanian
Polish
Portuguese
Slovak
XP24000/XP20000 Disk Array Owner Guide
55
Slovenian
Spanish
Swedish
56
Regulatory statements for the HP XP24000/XP20000 Disk Array
Glossary
ACP
Array control processor.
AL
Arbitrated loop.
AL-PA
Arbitrated loop physical address.
allocation
The ratio of allocated storage capacity versus total capacity as a percentage.
Allocated storage refers to those logical devices (LDEVs) that have paths assigned
to them. Allocated storage capacity is the sum of the storage of these LDEVs.
Total capacity is the sum of the capacity of all LDEVs on the disk array.
array group
A group of four or eight physical hard disk drives (HDDs) installed in an XP array
and assigned a common RAID level. RAID1 array groups consist of four (2D+2D)
or eight HDDs (4D+4D). RAID5 array groups include a parity disk, but also
consist of four (3D+1P) or eight HDDs (7D+1P). All RAID6 array groups are
made up of eight HDDs (6D+2P).
BC
HP Business Copy. An HP StorageWorks application that lets you maintain up
to nine local copies of logical volumes on the disk array.
cache
Very high speed memory that is used to speed I/O transaction time. All reads
and writes to the XP array family are sent to the cache. The data is buffered there
until the transfer to/from physical disks (with slower data throughput) is complete.
The benefit of cache memory is that it speeds I/O throughput to the application.
The larger the cache size, the greater the amount of data buffering that can occur
and the greater throughput to the applications.
XP arrays support a range of cache memory. In the event of power loss, battery
power maintains the contents of cache for a specified time period.
CAS
Customer Access System.
CHA
Channel adapter. A device that provides the interface between the array and
the external host system. Occasionally, this term is used synonymously with the
term channel host interface processor (CHIP).
CHIP
Channel host interface processor. Synonymous with the term CHA.
CHP
Channel processor. The processors located on the CHA. Synonymous with CHIP.
command device
A volume on the disk array that accepts HP StorageWorks Continuous Access
or HP StorageWorks Business Copy control operations which are then executed
by the array.
Continuous Access
The HP StorageWorks XP Continuous Access program, which enables you to
replicate data stored on a local disk array to a remote disk array.
control unit
To organize the storage space attached to the DKC, you can group similarly
configured LDEVs with unique CU images. CUs are numbered sequentially. The
XP24000/XP20000 Disk Array Owner Guide
57
disk array supports a certain number of CUs, depending on the disk array model.
Each CU can manage multiple LDEVs. Therefore, to uniquely identify a particular
LDEV requires both the CU number and the LDEV number.
CSR
Customer Self Repair.
C-Track
Continuous track. An HP StorageWorks software program that detects internal
hardware component problems on a array and automatically reports them to
the HP Storage Technology Center (STC).
CU
Control unit.
CVS
Custom volume size. CVS devices (OPEN-x CVS) are custom volumes configured
using array management software to be smaller than normal fixed-size OPEN
system volumes. Synonymous with VSC.
disk group
A named group of disks selected from all the available disks in a disk array.
One or more virtual disks can be created from a disk group. Also refers to the
physical disk locations associated with a parity group.
disk type
The manufacturing ID written into the physical disk controller firmware. In most
cases, the disk type is identical to the disk model number.
DKA
Disk adapter.
See also ACP
DKC
Disk controller.
DKU
Disk array frame. The array hardware that houses the disk array physical disks.
DRR unit
Disk recovery and restore unit. The unit responsible for data recovery and
restoration in the event of a cache failure. Located on the ACP.
emulation mode
The LDEVs associated with each RAID group are assigned an emulation mode
that makes them operate like OPEN system disk drives. The emulation mode
determines the size of an LDEV.
OPEN-3: 2.46 GB
OPEN-8: 7.38 GB
OPEN-9: 7.42 GB
OPEN-E: 13.56 GB
OPEN-K: Not available
OPEN-L: 36 GB
OPEN-M Not available
OPEN-V: User-defined custom size
EPO
Emergency power-off.
ESCON
Enterprise systems connection An optical interface used to connect the mainframe
to the control unit; a predecessor to FICON.
expanded LUN
A LUN is normally associated with only a single LDEV. The LUN Size Expansion
(LUSE) feature allows a LUN to be associated with 2-36 LDEVs. Essentially, LUSE
makes it possible for applications to access a single large pool of storage. LUSE
is an optional feature.
ExSA
Extended serial adapter.
58
Glossary
failover
An operation that reverses replication direction so that the destination becomes
the source and the source becomes the destination. Failovers can be planned or
unplanned and can occur between DR groups, managed sets, fabrics or paths,
and array controllers.
FC
Fibre Channel. A network technology primarily used for storage networks.
FC-AL
Fibre Channel arbitrated loop.
FCP
Fibre Channel protocol.
fence level
A method of setting rejection of P9000 or XP Continuous Access write I/O
requests from the host according to the condition of mirroring consistency.
FICON
Fibre connectivity. Hardware that connects the mainframe to the control unit.
FSW
Fibre switch.
GLM
Gigabit link module. A 1 Gb/s fiber optic transceiver.
HA
High availability.
HBA
Host bus adapter. A built-in function or a card installed in a PC or other host
computer to enable connection of the host to the SAN.
HDD
Hard disk drive.
HDU
Hard disk unit.
host mode
Each port can be configured for a particular host type. These modes are
represented as two-digit hexadecimal numbers. For example, host mode 08
represents an HP-UX host.
hot standby
The act of using one or more servers (or disks) as a standby in case of a primary
server (disk) failure.
LD, LDEV
Logical device. An LDEV is created when a RAID group is carved into pieces
according to the selected host emulation mode (that is, OPEN-3, OPEN-8,
OPEN-9). The number of resulting LDEVs depends on the selected emulation
mode. The term LDEV is also known as term volume.
local disk
A disk in the local array. Sometimes refers to a disk in a local host.
LUN
Logical unit number. A LUN results from mapping a SCSI logical unit number,
port ID, and LDEV ID to a RAID group. The size of the LUN is determined by the
emulation mode of the LDEV, and the number of LDEVs associated with the LUN.
For example, a LUN associated with two OPEN-3 LDEVs has a size of 4,693
MB.
LUSE
Logical Unit Size Expansion. The LUSE feature is available when the HP
StorageWorks LUN Manager product is installed, and allows a LUN, normally
associated with only a single LDEV, to be associated with 1 to 36 LDEVs.
Essentially, LUSE makes it possible for applications to access a single large pool
of storage.
MCU
Main control unit.
XP24000/XP20000 Disk Array Owner Guide
59
mirroring
consistency
The consistency (usability) of data in a volume (for example, S-VOL).
MIX
A circuit board in the disk control unit that includes disk adapters and channel
adapters for interfacing disk drives and the host to cache memory.
MR
Magnetoresistive.
ms, msec
Millisecond.
mutual hot
standby system
Two servers that are poised to cover for each other if necessary.
NAS
Network attached storage.
node
Logically speaking, an environment where instances can be executed. Physically,
a processor, which is an element of a cluster system.
NVS
Nonvolatile storage.
OFC
Open Fibre Control.
OLM
Optical link module.
OLM
Optical link module.
PA
Physical address.
partition
The act of dividing a specific physical disk into two or more areas as if there are
two or more physical disks.
path
A path is created by associating a port, a target, and a LUN ID with one or more
LDEVs. Also known as a LUN.
PCI
Peripheral component interconnect. The PCI bus typically runs at speeds of 33
MHz or 66 MHz and is usually 32 bits wide. This means that it passes 32 bits
of data simultaneously as if down 32 separate wires. Some of the most recent
computers include wider 64-bit PCI buses, and already certain very high-end
video capture cards offer improved performance if connected to a 64-bit PCI
bus.
port
A physical connection that allows data to pass between a host and the disk
array. The number of ports on an XP disk array depends on the number of
supported I/O slots and the number of ports available per I/O adapter. The XP
family of disk arrays supports FC ports as well as other port types. Ports are
named by port group and port letter, such as CL1-A. CL1 is the group, and A is
the port letter.
P-P
Point-to-point.
RAID group
A group of disks configured to provide enhanced redundancy, performance, or
both. Specifically, four or eight physical hard disk drives (HDDs) installed in an
XP disk array and assigned a common RAID level.
RAID level
A RAID level is one of the ways that disk drives are grouped together to improve
performance, data availability/reliability, or both. RAID levels are defined from
RAID0 to RAID6. HP StorageWorks Disk Arrays in the XP product family support
RAID1, RAID5 and RAID6. Not all of these RAID levels are supported by all XP
60
Glossary
family members. Consult the owner’s guide or your HP representative for the
details about which RAID levels are supported by your specific XP disk array.
RS
Russellstoll (registered trademarked), a brand of electrical plugs and receptacles
manufactured by Thomas & Betts Corporation.
R-SIM
Remote service information message.
R/W, r/w
Read/write.
SAN
Storage area network. A network of storage devices available to one or more
servers.
script file
A file containing a shell script.
shell script
A sequence of two or more commands executed by a UNIX shell.
sidefile
An area of cache used to store the data sequence number, record location,
record length, and queued control information.
SIM
Service information message.
SMI-S
Storage Management Initiative Specification.
SMS
System Managed Storage.
SPOCK
HP StorageWorks Single Point of Connectivity Knowledge.
SSID
Subsystem identifier; storage system identifier.
STC
HP Storage Technology Center.
SVP
Service processor. A notebook computer built into the disk array. The SVP
provides a direct interface to the disk array and used only by the HP service
representative.
TB
Terabyte. Equivalent to 1,000 Gb for data storage and statistics, or 1,024 Gb
for memory.
TID
Target ID.
VOLID
Volume ID.
VSC
Volume size customization. Also known as CVS.
volume
Synonymous with LDEV.
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Glossary
Index
A
AC line voltage, 30
AC power cords, 30
array management, 11
automatic restart, 41
B
backup battery operation mode, 25
batteries, backup, 25, 40
C
C-Track, 7, 8, 37, 43, 46
cache battery backup, 25
Command View XP Advanced Edition, 11, 35
Command View XP Advanced Edition, 11, 35
components
hardware, 21
included, 11
required additional, 12
connectivity, 8
control panel, 36, 38
customer self repair, 47
D
data integrity, 7
data availability, 7
destage battery operation mode, 25
disk array features
hardware, 11
scalability, 9
disk drives, 23
disk array features
continuous data availability, 7
disk array features
connectivity, 8
data encryption, 10
data integrity, 7
nondisruptive service and upgrades, 8
software, 7, 11
summary of, 10
disk control frame. See DKC, 22
disk drives
encryption of, 10
DKA, 10
DKC, 21, 22
DKU, 21
document
related documentation, 47
documentation
HP website, 47
providing feedback, 48
E
emergency power off, 34, 39
emergency power off switch, 23
encryption
HP DKA Encryption License Key, 10
environmental specifications, 26
external storage, 11
F
failure detection and reporting process, 45
features
data integrity, 7
high availability, 7
software, 7
H
hardware
control panel, 36, 38
disk control frame, 22
disk drives, 23
features, 11
normal operations, 33
physical components, 21
RAID options, 24
service processor. See SVP, 23
specifications, 26
hazard warnings, 33
help
obtaining, 47
high availability, 7
HP
technical support, 47
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HP Insight Remote Support Advanced, 8
HP Storage Technology Center. See STC, 8
humidity specifications, 30
I
Internet-based remote support, 43
L
LED
Control Panel Descriptions, 36
displayed with SIM, 46
during restart, 40, 41
during restart, 40, 41
line voltage, 30
M
maintenance, remote, 37
management server, 21, 35
manual restart, 40
mechanical vibration specifications, 30
N
normal operations, 33
O
operating systems, 11
P
physical components. See hardware, 21
power off
emergency, 34, 39
power cords, 30
power off
emergency, 34, 39
planned, 39
recovery from unplanned, 40, 41
recovery from unplanned, 40, 41
unplanned, 25
powering down, 38
powering down the disk array, 34
R
rack stability
warning, 47
RAID options, 24
RAID levels, 7
recovering from a power outage, 40, 41
recovering from a power outage, 40, 41
64
regulatory statements, 49, 51
related documentation, 47
remote support, 7, 37, 46
See also XP Continuous Track, 37
remote maintenance, 37
remote support, 7, 37, 46
Remote Web Console XP, 35
restart
automatic, 41
manual, 40
S
safety guidelines, 33
scalability, 9
service, 8
service information messages, 43
service processor. See SVP, 23
software
and solution integration, 7
features, 7, 11
products for XP disk arrays, 12
specifications, 26
STC, 7, 8, 37, 45
Storage Technology Center. See STC, 8
Subscriber's Choice, HP, 48
support
Internet-based remote, 43
SVP, 23, 43
T
technical support
HP, 47
technical support, 7, 48
temperature specifications, 29
U
unit emergency power off switch, 23, 34, 37
upgrades, 8
V
vibration specifications, 30
W
warning
rack stability, 47
websites
customer self repair, 47
HP, 48
HP Subscriber's Choice for Business, 48
product manuals, 47
X
XP Continuous Track, 7, 8, 37, 43, 46
XP Continuous Track, 7, 8, 37, 43, 46
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