HP Surestore Disk Array 12h - And FC60 Service manual

HP SureStore E Disk Array 12H
System Administrator’s Guide for
HP-UX, MPE, and MicrosoftWindows NT
with AutoRAID ™ Technology
HP Part Number C5445-90902
Printed in U.S.A.
September 1999

2
Notice
Copyright ©1997, 1998, 1999 Hewlett-Packard Company
The information contained in this document is subject to change without notice.
Hewlett-Packard Company makes no warranty of any kind with regard to this material, including, but not
limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard
shall not be liable for errors contained herein or for incidental or consequential damages in connection with
the furnishing, performance, or use of this material.
This document contains proprietary information, which is protected by copyright. All rights are reserved.
No part of this document may be photocopied, reproduced, or translated to another language without the
prior consent of Hewlett-Packard.
Print History
Edition 1, May 1997
Edition 2, January 1998
Edition 3, May 1998
Edition 4, August 1998
Edition 5, February 1999
Edition 6, June 1999
Edition 7, September 1999
Typographical Conventions
NOTE! Notes contain important information.
CAUTION! Caution messages indicate procedures which, if not observed, could result in
damage to your equipment or loss of your data.
WARNING! Warning messages indicate procedures or practices which, if not observed,
could result in personal injury.

3
About this Book
This book describes the tasks and tools involved in managing the HP SureStore E Disk Array 12H on HP-
UX, MPE, and Windows NT. This material is intended for system administrators and others involved in
the installation, operation, and management of network storage. The content of this book is organized as
follows:
The first section describes the tasks involved in managing the HP SureStore E Disk Array 12H on HP-UX.
• Chapter 1 provides an overview of the management tools, system requirements, and software
installation.
• Chapter 2 describes how to use the HP-UX System Administration Manager (SAM) to manage the disk
array.
• Chapter 3 describes how to manage the disk array using the HP-UX ARM command line utilities.
• Chapter 4 explains how to use the ARDIAG Offline Diagnostic to isolate and solve disk array
problems.
The next section describes the tasks involved in managing the HP SureStore E Disk Array 12H on MPE.
• Chapter 5 provides an overview of the management tools, system requirements, and software
installation.
• Chapter 6 describes how to manage the disk array using the MPE ARM command line utilities.
• Chapter 7 explains how to use the ARDIAG Offline Diagnostic to isolate and solve disk array
problems.
The last section describes management of the HP SureStore E Disk Array 12H on Windows NT.
• Chapter 8 provides an overview of the system requirements and software installation.
• Chapter 9 describes how to use the AutoRAID Manager for Windows to manage the disk array.
• Chapter 10 describes how to manage the disk array using the Windows NT ARM command line
utilities.
During installation of the AutoRAID Manager for Windows NT software, an electronic copy of this book in
AdobeAcrobatformat is included in the Program Files\AutoRAID\Doc directory (default
location).

4
Supporting Documentation
The following documentation is included with the HP SureStore E Disk Array 12H and should be available
for reference when installing and managing the disk array.
• HP SureStore E Disk Array 12H User’s and Service Manual, part number C5445-90901
For Windows NT users, an electronic copy of this book in AdobeAcrobatformat is included in the
Program Files\AutoRAID\Doc directory.
Trademark Credits
AutoRAID™is a trademark of Hewlett-Packard Company.
Microsoft Windowsand Microsoft Windows NTare registered trademarks of Microsoft Corporation.
HP on the World Wide Web
The latest information about your HP SureStore E Disk Array 12H is available on the HP web site at
www.hp.com/go/support
Check our web site for
• Updated editions of product documentation
• Firmware and software upgrades
• Current supported system configurations
• General information for optimizing the operation of your disk array

5
Table of Contents
CHAPTER 1. MANAGING THE HP SURESTORE E DISK ARRAY 12H ON HP-UX.................... 13
DISK ARRAY MANAGEMENT TOOLS .......................................................................................................... 14
System Administration Manager (SAM)............................................................................................... 14
AutoRAID Management (ARM) utilities.............................................................................................. 14
Disk array control panel........................................................................................................................ 14
WHICH TOOLS TO USE FOR EACH TASK .................................................................................................... 15
INSTALLING THE DISK ARRAY MANAGEMENT SOFTWARE......................................................................... 16
Operating System Support.................................................................................................................... 16
IPR Program......................................................................................................................................... 16
TIPS FOR CONFIGURING THE DISK ARRAY ON HP-UX............................................................................... 17
CHAPTER 2. USING THE HP-UX SYSTEM ADMINISTRATION MANAGER.............................. 19
SELECTING HARDWARE PATHS ON HP-UX 10.20 ..................................................................................... 20
CONFIGURING A NEW DISK ARRAY ........................................................................................................... 23
CHECKING DISK ARRAY STATUS ............................................................................................................... 24
CHANGING DISK ARRAY CONFIGURATION SETTINGS................................................................................. 24
MANAGING LUNS (LOGICAL DRIVES)....................................................................................................... 25
Checking LUN Configuration............................................................................................................... 26
Creating a LUN..................................................................................................................................... 26
Deleting a LUN..................................................................................................................................... 27
ADDING A DISK.......................................................................................................................................... 28
Including a Disk.................................................................................................................................... 29
Downing (Excluding) a Disk ................................................................................................................ 30
REBUILDING THE DISK ARRAY................................................................................................................... 31
Setting Rebuild Priority ........................................................................................................................ 31
SWITCHING PRIMARY CONTROLLERS......................................................................................................... 32
CHAPTER 3. USING THE ARM COMMAND LINE UTILITIES FOR HP-UX................................ 33
INFORMATION IN MAN PAGES..................................................................................................................... 33
COMMAND SYNTAX CONVENTIONS........................................................................................................... 34
THE ARMSERVER PROCESS...................................................................................................................... 34
THE ARRAY MONITOR DAEMON (ARRAYMOND) ....................................................................................... 35
Routing arraymond Error Messages...................................................................................................... 35
SELECTING A DISK ARRAY TO MANAGE .................................................................................................... 36
CONFIGURING A NEW DISK ARRAY ........................................................................................................... 37
CHECKING DISK ARRAY STATUS ............................................................................................................... 39
DISPLAYING DISK ARRAY SERIAL NUMBERS............................................................................................. 40
CHANGING DISK ARRAY CONFIGURATION SETTINGS................................................................................. 40

6
MANAGING LUNS (LOGICAL DRIVES) .......................................................................................................42
Checking LUN Configuration...............................................................................................................42
Creating a LUN.....................................................................................................................................42
Renumbering a LUN.............................................................................................................................43
Deleting a LUN.....................................................................................................................................43
ADDING A DISK..........................................................................................................................................44
Including a Disk....................................................................................................................................45
REBUILDING THE DISK ARRAY...................................................................................................................46
Rebuilding the Disk Array Manually ....................................................................................................46
Setting Rebuild Priority.........................................................................................................................46
Checking the Progress of a Rebuild......................................................................................................47
Canceling a Rebuild..............................................................................................................................47
ANALYZING DISK ARRAY PERFORMANCE..................................................................................................48
Command Examples..............................................................................................................................48
Selecting a Time Period for Analysis....................................................................................................49
Checking the Working Set Metric.........................................................................................................49
PERFORMING DISK ARRAY MAINTENANCE TASKS.....................................................................................50
Shutting Down the Disk Array..............................................................................................................50
Restarting the Disk Array......................................................................................................................50
Resetting the Disk Array.......................................................................................................................51
Downing (Excluding) a Disk.................................................................................................................51
Testing a Disk .......................................................................................................................................52
Displaying Test Results.........................................................................................................................52
Canceling a Disk Test ...........................................................................................................................53
Printing ARMServer Log Contents.......................................................................................................53
Displaying Hardware Logs....................................................................................................................53
Formatting the Disk Array.....................................................................................................................54
Changing SCSI Settings........................................................................................................................55
Changing the Controller SCSI ID..........................................................................................................55
Switching Primary Controllers..............................................................................................................55
Setting Data Resiliency.........................................................................................................................56
Creating a Disk Array Alias..................................................................................................................58
DOWNLOADING FIRMWARE........................................................................................................................59
Firmware Download Procedure With LVM..........................................................................................60
RECOVERING DATA MAPS .........................................................................................................................62
VIEWING THE DISK ARRAY GENERAL CONFIGURATION SETTINGS .............................................................64
Simplified Resiliency Setting................................................................................................................70
CHAPTER 4. USING THE ARDIAG OFFLINE DIAGNOSTIC ON HP-UX......................................73
OPERATING ENVIRONMENT........................................................................................................................73
Support Software...................................................................................................................................73
Minimum hardware...............................................................................................................................73

7
Minimum software................................................................................................................................ 73
DEFINITION OF TERMS ............................................................................................................................... 74
ARDIAG OPERATIONAL COMMANDS ....................................................................................................... 75
ARDIAG INTERFACE COMMANDS ............................................................................................................ 76
OPERATIONAL COMMAND DESCRIPTIONS.................................................................................................. 77
CLRLOG .............................................................................................................................................. 77
DELETELUN....................................................................................................................................... 78
DESCRIBE........................................................................................................................................... 79
DOWNLOAD....................................................................................................................................... 81
FORMAT.............................................................................................................................................. 85
INQUIRY ............................................................................................................................................. 87
READLOG ........................................................................................................................................... 88
RECOVER............................................................................................................................................ 92
REQSENSE.......................................................................................................................................... 94
RESTART ............................................................................................................................................ 95
REVISION............................................................................................................................................ 96
ROMT................................................................................................................................................... 97
SETOPTIONS...................................................................................................................................... 99
SHUTDOWN ..................................................................................................................................... 102
WRTMT ............................................................................................................................................. 103
INTERFACE COMMAND DESCRIPTIONS...................................................................................................... 105
DISPMAP........................................................................................................................................... 105
DISPMECH........................................................................................................................................ 106
RANGE............................................................................................................................................... 107
SHOWENV ........................................................................................................................................ 108
TESTDISK ......................................................................................................................................... 109
TESTLEVEL...................................................................................................................................... 110
ODE INTERFACE...................................................................................................................................... 111
ARDIAG INTERFACE TO ODE................................................................................................................. 113
CHAPTER 5. MANAGING THE HP SURESTORE E DISK ARRAY 12H ON MPE...................... 115
DISK ARRAY MANAGEMENT TOOLS ........................................................................................................ 116
AutoRAID Management (ARM) utilities............................................................................................ 116
Disk array control panel...................................................................................................................... 116
WHICH TOOLS TO USE FOR EACH TASK .................................................................................................. 117
INSTALLING THE DISK ARRAY MANAGEMENT SOFTWARE....................................................................... 118
Operating System Support.................................................................................................................. 118
TIPS FOR CONFIGURING THE DISK ARRAY ON MPE ................................................................................ 119
CONFIGURING AUTORAID SCSI LUNS FOR MPE/IX ............................................................................. 121
Configuration Requirements............................................................................................................... 121
MPE/iX SYSGEN Configuration ....................................................................................................... 122
Device Adapter Configuration:........................................................................................................... 123

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SCSI Target Configuration: ................................................................................................................123
LDEV (SCSI LUN) Configuration......................................................................................................124
CHAPTER 6. USING THE ARM COMMAND LINE UTILITIES FOR MPE..................................125
SETTING UP MPE POSIX SHELL.............................................................................................................125
INFORMATION IN MAN PAGES...................................................................................................................126
COMMAND SYNTAX CONVENTIONS .........................................................................................................126
THE ARMSERVER PROCESS ....................................................................................................................127
SELECTING A DISK ARRAY TO MANAGE...................................................................................................128
CONFIGURING A NEW DISK ARRAY..........................................................................................................129
CHECKING DISK ARRAY STATUS..............................................................................................................131
DISPLAYING DISK ARRAY SERIAL NUMBERS ...........................................................................................132
CHANGING DISK ARRAY CONFIGURATION SETTINGS ...............................................................................132
MANAGING LUNS (LOGICAL DRIVES) .....................................................................................................134
Checking LUN Configuration.............................................................................................................134
Creating a LUN...................................................................................................................................134
Renumbering a LUN...........................................................................................................................135
Deleting a LUN...................................................................................................................................135
ADDING A DISK........................................................................................................................................136
Including a Disk..................................................................................................................................136
REBUILDING THE DISK ARRAY.................................................................................................................138
Rebuilding the Disk Array Manually ..................................................................................................138
Setting Rebuild Priority.......................................................................................................................138
Checking the Progress of a Rebuild....................................................................................................139
Canceling a Rebuild............................................................................................................................139
ANALYZING DISK ARRAY PERFORMANCE................................................................................................140
Command Examples............................................................................................................................140
Selecting a Time Period for Analysis..................................................................................................141
Checking the Working Set Metric.......................................................................................................141
PERFORMING DISK ARRAY MAINTENANCE TASKS...................................................................................142
Shutting Down the Disk Array............................................................................................................142
Restarting the Disk Array....................................................................................................................142
Resetting the Disk Array.....................................................................................................................143
Downing (Excluding) a Disk...............................................................................................................143
Testing a Disk .....................................................................................................................................144
Displaying Test Results.......................................................................................................................144
Canceling a Disk Test .........................................................................................................................145
Printing ARMServer Log Contents.....................................................................................................145
Displaying Hardware Logs..................................................................................................................145
Formatting the Disk Array...................................................................................................................146
Changing SCSI Settings......................................................................................................................147
Changing the Controller SCSI ID........................................................................................................147

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Switching Primary Controllers............................................................................................................ 148
Setting Data Resiliency....................................................................................................................... 148
Creating a Disk Array Alias................................................................................................................ 150
DOWNLOADING FIRMWARE ..................................................................................................................... 151
Firmware Download Procedure.......................................................................................................... 152
RECOVERING DATA MAPS ....................................................................................................................... 153
VIEWING THE DISK ARRAY GENERAL CONFIGURATION SETTINGS........................................................... 155
Simplified Resiliency Setting.............................................................................................................. 161
CHAPTER 7. USING THE ARDIAG OFFLINE DIAGNOSTIC ON MPE....................................... 165
OPERATING ENVIRONMENT...................................................................................................................... 165
Support Software ................................................................................................................................ 165
Minimum hardware............................................................................................................................. 165
Minimum software.............................................................................................................................. 165
DEFINITION OF TERMS ............................................................................................................................. 166
ARDIAG OPERATIONAL COMMANDS ..................................................................................................... 167
ARDIAG INTERFACE COMMANDS .......................................................................................................... 168
OPERATIONAL COMMAND DESCRIPTIONS................................................................................................ 169
CLRLOG ............................................................................................................................................ 169
DELETELUN..................................................................................................................................... 170
DESCRIBE......................................................................................................................................... 171
DOWNLOAD..................................................................................................................................... 173
FORMAT............................................................................................................................................ 177
INQUIRY ........................................................................................................................................... 179
READLOG ......................................................................................................................................... 180
RECOVER.......................................................................................................................................... 184
REQSENSE........................................................................................................................................ 186
RESTART .......................................................................................................................................... 187
REVISION.......................................................................................................................................... 188
ROMT................................................................................................................................................. 189
SETOPTIONS.................................................................................................................................... 191
SHUTDOWN ..................................................................................................................................... 194
WRTMT ............................................................................................................................................. 195
INTERFACE COMMAND DESCRIPTIONS...................................................................................................... 197
DISPMAP........................................................................................................................................... 197
DISPMECH........................................................................................................................................ 198
RANGE............................................................................................................................................... 199
SHOWENV ........................................................................................................................................ 200
TESTDISK ......................................................................................................................................... 201
TESTLEVEL...................................................................................................................................... 202
ODE INTERFACE...................................................................................................................................... 203
ARDIAG INTERFACE TO ODE................................................................................................................. 205

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CHAPTER 8. MANAGING THE HP SURESTORE E DISK ARRAY 12H ON WINDOWS NT....207
AUTORAID MANAGER COMPONENTS.....................................................................................................208
HP OPENVIEW INTEGRATION ..................................................................................................................209
Disk Array Events...............................................................................................................................209
SYSTEM REQUIREMENTS..........................................................................................................................210
Checking the System Hardware Configuration ...................................................................................210
INSTALLING AUTORAID MANAGER SOFTWARE ......................................................................................211
Installation Tips...................................................................................................................................211
Controlling Access to the Disk Arrays................................................................................................213
SETTING UP AUTORAID MANAGER FOR WINDOWS NT..........................................................................214
The HPAutoRAID Manager GUI........................................................................................................215
What is a view?...................................................................................................................................216
How do I add a customized view?.......................................................................................................217
DISCOVERINGDISK ARRAYS.....................................................................................................................219
MANAGING DISK ARRAYS ON A REMOTE HOST .......................................................................................219
EDITING THE DISK ARRAY LIST................................................................................................................220
SOLVING COMMON INSTALLATION PROBLEMS.........................................................................................220
CHAPTER 9. USING AUTORAID MANAGER FOR WINDOWS NT..............................................223
ONLINE HELP...........................................................................................................................................223
SELECTING A DISK ARRAY.......................................................................................................................223
CONFIGURING A NEW DISK ARRAY..........................................................................................................224
CHECKING DISK ARRAY STATUS..............................................................................................................224
CHANGING DISK ARRAY CONFIGURATION SETTINGS ...............................................................................225
MANAGING LOGICAL DRIVES...................................................................................................................226
Creating a Logical Drive.....................................................................................................................226
Renumbering a Logical Drive.............................................................................................................227
Deleting a Logical Drive.....................................................................................................................227
ADDING A DISK........................................................................................................................................228
Including a Disk Manually..................................................................................................................229
REBUILDING THE DISK ARRAY.................................................................................................................230
Rebuilding the Disk Array Automatically...........................................................................................230
Rebuilding the Disk Array Manually ..................................................................................................231
Checking the Progress of a Rebuild....................................................................................................231
Canceling a Rebuild............................................................................................................................232
ANALYZING DISK ARRAY PERFORMANCE................................................................................................232
Selecting a Time Period for Analysis..................................................................................................232
Displaying Performance Metric Thresholds........................................................................................233
PERFORMING DISK ARRAY MAINTENANCE TASKS...................................................................................234
Shutting Down the Disk Array............................................................................................................234
Restarting the Disk Array....................................................................................................................235
Resetting the Disk Array.....................................................................................................................235

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Formatting the Disk Array.................................................................................................................. 235
Formatting a Logical Drive................................................................................................................. 236
Testing a Disk..................................................................................................................................... 236
Downing a Disk .................................................................................................................................. 237
Switching Array Controllers ............................................................................................................... 237
Displaying Hardware Logs ................................................................................................................. 238
DOWNLOADING CONTROLLER FIRMWARE ............................................................................................... 239
CHAPTER 10. USING THE ARM COMMAND LINE UTILITIES FOR WINDOWS NT............. 241
ONLINE HELP........................................................................................................................................... 241
COMMAND SYNTAX CONVENTIONS......................................................................................................... 242
SELECTING A DISK ARRAY TO MANAGE .................................................................................................. 242
CONFIGURING A NEW DISK ARRAY ......................................................................................................... 243
CHECKING DISK ARRAY STATUS ............................................................................................................. 244
DISPLAYING DISK ARRAY SERIAL NUMBERS........................................................................................... 245
CHANGING DISK ARRAY CONFIGURATION SETTINGS............................................................................... 246
MANAGING LOGICAL DRIVES .................................................................................................................. 247
Checking Logical Drive Configuration............................................................................................... 247
Creating a Logical Drive..................................................................................................................... 247
Renumbering a Logical Drive............................................................................................................. 248
Deleting a Logical Drive..................................................................................................................... 248
ADDING A DISK........................................................................................................................................ 249
Including a Disk Manually.................................................................................................................. 250
REBUILDING THE DISK ARRAY................................................................................................................. 251
Rebuilding the Disk Array Manually.................................................................................................. 251
Setting Rebuild Priority ...................................................................................................................... 251
Checking the Progress of a Rebuild.................................................................................................... 252
Canceling a Rebuild............................................................................................................................ 252
ANALYZING DISK ARRAY PERFORMANCE ............................................................................................... 253
Command Examples........................................................................................................................... 253
PERFORMING DISK ARRAY MAINTENANCE TASKS .................................................................................. 254
Shutting Down the Disk Array............................................................................................................ 254
Restarting the Disk Array.................................................................................................................... 254
Resetting the Disk Array..................................................................................................................... 255
Downing (Excluding) a Disk .............................................................................................................. 255
Testing a Disk..................................................................................................................................... 256
Displaying Test Results ...................................................................................................................... 256
Canceling a Disk Test......................................................................................................................... 257
Printing ARMServer Log Contents..................................................................................................... 257
Displaying Hardware Logs ................................................................................................................. 257
Formatting the Disk Array.................................................................................................................. 258
Changing SCSI Settings...................................................................................................................... 259

12
Changing the Controller SCSI ID........................................................................................................259
Switching Primary Controllers............................................................................................................259
DOWNLOADING FIRMWARE......................................................................................................................260
Downloading Firmware to a Disk Module..........................................................................................260
Downloading Firmware to the Disk Array Controllers .......................................................................261
Copying Firmware From the Primary Controller to the Secondary Controller ...................................262
VIEWING THE DISK ARRAY GENERAL CONFIGURATION SETTINGS ...........................................................263
Simplified Resiliency Setting..............................................................................................................269
Setting Data Resiliency.......................................................................................................................272
Creating a Disk Array Alias................................................................................................................273
INDEX........................................................................................................................................................275

13
HP-UX
Chapter 1. Managing the HP SureStore E
Disk Array 12H on HP-UX
This chapter introduces the tools available for managing your HP SureStore E Disk Array 12H on HP-UX.
These tools provide complete control over all aspects of disk array operation.
The following information is included in this chapter:
• A brief description of each management tool
• Which tools can be used for each management task.
• Instructions for installing the disk array management software

Managing the HP SureStore E Disk Array 12H on HP-UX
Disk Array Management Tools
14
HP-UX
Disk Array Management Tools
Three disk array management tools are available for managing the disk array — two online tools and the
disk array control panel.
System Administration Manager (SAM)
Most of the common tasks involved in managing the disk array can be performed using the HP-UX System
Administration Manager, or SAM. This allows you to manage the host system and the disk array using the
same tool.
AutoRAID Management (ARM) utilities
Included with the disk array is a set of ARM utilities, which provide advanced capabilities for managing the
disk array. Although you will primarily use SAM to manage the disk array, you will need to use the ARM
utilities to perform functions such as formatting or diagnostics.
Disk array control panel
An alternative to the online management tools is the disk array control panel. Although you can use the disk
array control panel to perform most of the management tasks available through the ARM utilities, the added
convenience and functionality provided by SAM and the ARM utilities make them better tools for managing
the disk array.

Managing the HP SureStore E Disk Array 12H on HP-UX
Which Tools to Use for Each Task
15
HP-UX
Which Tools to Use for Each Task
The various management tasks have been divided between SAM and the command- line utilities. In general,
the more common tasks are available from SAM while the more advanced tasks are performed from the
ARM utilities. Most tasks can also be performed using the disk array control panel.
Table 1. Tools and Tasks
Tasks Tools
SAM ARM
Utilities Control Panel
Including a disk Yes Yes (arraycfg) Yes
Checking disk array status Yes Yes (arraydsp) Yes
Creating/deleting LUNs Yes Yes (arraycfg) Yes
Renumbering LUNs No Yes (arraycfg) Yes
Starting/canceling a Rebuild No Yes (arrayrbld) Yes
Downing (excluding) a disk Yes Yes (arraycfg) No
Formatting a LUN or array No Yes (arrayfmt) Yes
Shutting down the disk array No Yes (arraymgr) Yes
Changing operating settings Yes Yes (arraymgr) Yes
Changing SCSI settings No Yes (arraymgr) Yes
Monitoring performance No Yes (arraydsp) No
Switching primary controller Yes Yes (arraymgr) Yes
Testing a disk No Yes (drivetest) No
Displaying disk test results No Yes (dteststat) No
Displaying disk array serial
numbers Yes Yes (arraydsp) Yes
Changing controller SCSI ID No Yes (arraymgr) Yes
Resetting/restarting the disk array No Yes (arraymgr) Yes
Setting data resiliency No Yes (arraymgr) No
Creating a disk array alias No Yes (arraymgr) No
Recovering data maps No Yes (arrayrecover) Yes

Managing the HP SureStore E Disk Array 12H on HP-UX
Installing the Disk Array Management Software
16
HP-UX
Installing the Disk Array Management Software
The AutoRAID Manager (ARM) disk array management software is distributed on the IPR (Independent
Product Release) CD-ROM (B6191AA). The IPR CD-ROM should have been ordered and delivered with
your disk array.
The IPR CD-ROM includes an instruction sheet for installing the software. Follow the instructions to install
the ARM software.
NOTE! The HP SureStore E Disk Array 12H disk array requires IPR CD-ROM release
IPR9810 or later. Earlier releases of the IPR CD-ROM do not contain the required
software.
At the time of printing the following ARMServer patches were available:
PHCO_15699 for HP-UX 10.X
PHCO_15700 for HP-UX 11.0
The latest patches are available from the HP Patch web site:
(www.hp.com/go/support)
which will indicate if the above patches have been superceded.
Operating System Support
The HP SureStore E Disk Array 12H is currently supported on the following HP-UX releases:
• 10.01
• 10.10
• 10.20
• 11.0
IPR Program
To provide you with the latest software patches and drivers, Hewlett-Packard offers the Independent
Product Release (IPR) program. As a subscriber to this program you will receive a complete collection of
all updated patches and drivers at regular intervals, thus ensuring you always have the latest software. Using
the latest software upgrades will ensure optimal performance of the disk array and other hardware
peripherals.
Contact your Hewlett-Packard sales representative for more details on subscribing to the IPR program.

Managing the HP SureStore E Disk Array 12H on HP-UX
Tips for Configuring the Disk Array On HP-UX
17
HP-UX
Tips for Configuring the Disk Array On HP-UX
Before installing a new disk array, you should determine what is more important for your operating
environment — performance or capacity. This decision will influence how you configure the disk array
hardware and LVM. There are several configuration options that impact the performance of the disk array.
Table 2 identifies the various configuration options, their impact on disk array performance, and any
considerations regarding disk array capacity.
NOTE! Overall system performance is a complex issue influenced by many factors. The
configuration options described here will increase the potential performance of the disk array.
However, the actual performance of the disk array will be determined largely by host demand.
AutoRAID technology is particularly suited to I/O-intensive application environments such as
OLTP and NFS. It is in these environments that the performance benefits offered by AutoRAID
will be fully realized.
Table 2. Configuration Options
Configuration
Option Impact on Performance and Capacity
Number of LUNs
per disk array Performance. Increase the number of LUNs per disk array to improve
performance. More LUNs increases the size of the I/O command queue
allocated by HP-UX, which increases throughput. The recommended
number of LUNs is 4 to 6.
Capacity. To allow for future capacity expansion, avoid creating the
maximum number of LUNs (8) on the disk array. New capacity is made
available through the creation of a new LUN. If the maximum number of
LUNs have already been created, it will be necessary to delete and
recreate an existing LUN to increase capacity.
Number of disk
arrays per SCSI
host adapter
Performance. Limit the number of disk arrays per host adapter to
improve performance. The recommended configuration for maximum
performance is:
NIO adapter - 3 disk arrays
GSC adapter - 8 disk arrays
Capacity. If maximum capacity is more important than performance,
connect the maximum number of disk arrays to each adapter.

Managing the HP SureStore E Disk Array 12H on HP-UX
Tips for Configuring the Disk Array On HP-UX
18
HP-UX
Configuration
Option Impact on Performance and Capacity
Number of disk
drives Performance. Increase the number of disk mechanisms in the disk array
for maximum performance. As the number of individual disks is
increased, the number of potential I/Os that can be performed
simultaneously increases as well. This will improve performance in
environments that place heavy I/O demand on the disk array.
Capacity. The capacity of a disk array that is fully populated with disk
mechanisms can only be increased by replacing lower capacity disks with
higher capacity disks.
Unallocated disk
array capacity Performance. Unallocated capacity is used as additional RAID 0/1
space. The amount of RAID 0/1 space required to maintain optimal
performance is determined by the write working set parameter.
Capacity. To create the maximum amount of storage capacity, allocate
all available capacity to LUNs.
LVM configuration Performance. To improve performance, configure LVM as follows:
• Stripe logical volumes across LUNs on different disk arrays.
Including LUNs on different disk arrays will improve throughput by
spreading I/Os across arrays.
• Divide LUN access between both disk array controllers. Mapping
every LUN to the same controller does not utilize the two data paths
available on the disk array. The default path is through the primary
disk array controller, but this can be changed to the secondary
controller when adding the physical volume to an LVM volume group.
The process for changing the path differs for each version of HP-UX:
HP-UX 10.1. From the Disk Devices list, select the disk hardware
path through the secondary controller before adding the disk to
a volume group.
HP-UX 10.2. When adding the disk to a volume group, in the
“Creating A Volume Group” dialog change the hardware path to
the secondary controller
Capacity. These LVM configurations have no impact on disk array
capacity configuration.

19
HP-UX
Chapter 2. Using the HP-UX System
Administration Manager
Most disk array management can be done using the HP-UX System Administration Manager, or SAM.
Using SAM you can:
• Check disk array status
• Change configuration settings
• Manage the disk array LUNs
• Add a disk to the array configuration
• Set the rebuild priority
You must login as superuser or root to use SAM or the disk array utilities.
LUNs and Logical Drives. To maintain consistency with HP-UX terminology, the term LUN is
used to refer to a disk array logical drive. The two terms are used interchangeably and refer to the
same logical entity on the disk array.
NOTE! Before SAM can be used to manage the HP SureStore E Disk Array 12H, the AutoRAID
Manager (ARM) utility software must be installed as described in “Installing the Disk Array
Management Software“.
To run the SAM disk array management utilities:
1. Run SAM by typing sam at the system prompt.
2. On the main SAM screen, select “Disks and File Systems.”
3. On the “Disks and File Systems” screen, select “Disk Devices.” A list of disk devices including arrays
will be displayed.
You are now ready to work with the disk array. The remaining procedures in this chapter assume that you
have already performed these steps.

Using the HP-UX System Administration Manager
Selecting Hardware Paths on HP-UX 10.20
20
HP-UX
Selecting Hardware Paths on HP-UX 10.20
On dual controller disk arrays, each controller provides a separate hardware path to the disk array. The host
identifies one of these paths as the default hardware path and will use the default as the primary data path
for access to the LUNs created on the disk array.
To improve disk array performance, the paths to the LUNs on the disk array should be shared by both
controllers. Dividing the primary data paths across both controllers balances the I/O load and optimizes disk
array performance. The primary hardware path to each LUN is established when adding the LUN to a
volume group.
On HP-UX 10.01 and 10.10, both controller hardware paths are displayed on the Disk Devices windows.
The hardware path for a LUN is established by selecting the appropriate path.
On HP-UX 10.20 and later, only the primary controller hardware path is displayed in the Disk & File
Systems window (with an indication that there are two paths to the device). This makes the selection of an
alternate path to the LUN a bit more involved. The following steps should clarify the process of defining an
alternate path for a LUN.
To select an alternate hardware path:
1. From the Disk & File Systems window select the LUN you want to add.
2. From the Actions menu select “Add…” , and then select “Using The Logical Volume Manager”.