HP StorageWorks Smart Array Multipath Software User's Manual
HP StorageWorks
Smart Array Multipath software user guide
Part number: 354907-006
ixth edition: June 2008
S
Legal and notice information
© Copyright 2008 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.
Microsoft, Windows, Windows XP, and Windows NT are U.S. registered trademarks of Microsoft Corporation.
Contents
Aboutthisguide .......................... 7
Intendedaudience...................................... 7
Relateddocumentation.................................... 7
Documentconventionsandsymbols .............................. 8
HPtechnicalsupport..................................... 9
HP-authorizedreseller .................................... 9
1Overview ............................ 11
Softwareoverview...................................... 11
Softwaredistribution..................................... 11
Minimumrequirements .................................... 11
Supportedoperatingsystems ................................ 12
Microsoftfeaturesupport ................................ 12
Linuxfeaturesupport.................................. 12
Multipleoperatingsystemfeaturesupport......................... 12
Supported four-node configurations.............................. 12
Two-server external boot configuration .......................... 12
Two-server internal boot configuration........................... 13
Two-server mixed boot configuration ........................... 13
Two-server cluster configuration ............................. 13
Three-server external boot configuration.......................... 14
Three-server internal boot configuration.......................... 14
Three-server mixed boot configuration........................... 14
2InstallationandoperationinMicrosoftenvironments .......... 17
Pre-installationhardwaresetupforMicrosoft.......................... 17
InstallingSmartArrayMultipathsoftware ........................... 18
Installing Smart Array Multipath software in cluster configurations................. 18
Post-installationhardwaresetupforMicrosoft.......................... 19
UninstallingSmartArrayMultipathsoftware.......................... 19
Usingsilentinstallation................................... 19
InstallingSmartArrayMultipathsoftware ......................... 20
UninstallingSmartArrayMultipathsoftware........................ 21
StaticLUNbalancing.................................... 21
3InstallationandoperationinRedHatEnterpriseLinux3.0and4.0
environments........................... 23
Pre-installationhardwaresetupforRedHatEnterpriseLinux3.0and4.0.............. 23
MultipathinstallationforRedHatEnterpriseLinux3.0and4.0.................. 23
Post-installation configurationforRedHatEnterpriseLinux3.0and4.0............... 24
Static load (read-only) balancing in Red Hat Enterprise Linux 3.0 and 4.0 . . . . . . . . . . . . . 25
4 Installation and operation in Novell SUSE Linux Enterprise Server 9.0
environments........................... 27
Pre-installationhardwaresetupforNovellSUSELinuxEnterpriseServer9.0............. 27
MultipathinstallationforNovellSUSELinuxEnterpriseServer9.0................. 27
Post-installation configurationforNovellSUSELinuxEnterpriseServer9.0.............. 28
Static load (read-only) balancing in Novell SUSE Linux Enterprise Server 9.0 . . . . . . . . . . . . 30
Smart Array Multipath software user guide
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5 Troubleshooting . . ........................ 31
Problemdiagnosis..................................... 31
Problemsduringinstallation................................. 31
HBAfailure........................................ 32
Cablefailure ....................................... 32
AAcronymsandabbreviations ................... 33
Index .............................. 35
4
Tables
1
2
3
4
5
6
7
8
9
Documentconventions............................... 8
Two-server external boot configuration....................... 13
Two-server internal boot configuration ....................... 13
Two-server mixed boot configuration........................ 13
Two-server cluster configuration.......................... 14
Three-server external boot configuration ...................... 14
Three-server internal boot configuration ...................... 14
Three-server mixed boot configuration ....................... 15
Listofcommonreturnvalues ........................... 20
Smart Array Multipath software user guide
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6
About this guide
This guide discusses the following topics:
• Smart Array Multipath software
• Installing the product
• Uninstalling the product
• Troubleshooting
Intended audience
This guide is intended for:
• Network Engi
• Administrators
• Any one who wants to install, monitor, or manage the HP Smart Array Multipath software
NOTE:
HP assumes y
in products with hazardous energy levels.
neers
ou are qualified in the servicing of computer equipment and trained in recognizing hazards
Related documentation
To learn more about HP and HP products, services, and support, visit the HP website: http://www.hp.com.
For FAQs, software updates, and contact information for HP products, visit the HP Support website:
h
ttp://www.hp.com/support.
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Document conventions and symbols
Table 1 liststheconventionsusedinthisdocument.
Table 1 Docum
ent conventions
Convention
Medium blue text: Related
documentation
Medium blu
(h
ttp://w
Bold font
Italic f
Monospace font
Monospace, italic font
Monospace, bold font
TION:
CAU
icates that failure to follow directions can result in damage to equipment or data.
Ind
e, underlined text
ww.hp.com)
ont Text emphasis
Element
Cross-reference links and e-mail addresses
Website addresses
• Key names
• Text typed into a GUI element, such as into a box
• GUI elements that are clicked or selected, such as menu and list
items, buttons, and check boxes
• File and directory names
• System output
• Code
• Text typed at the command line
• Code variables
• Command-line variables
hasis of file and directory names, system output, code, and text
Emp
ed at the command line
typ
IMPORTANT:
Provides clarifying information or specific instructions.
NOTE:
Provides additional information.
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8
About this guide
HP technical support
Telephone numbers for worldwide technical support are listed on the HP support website:
h
ttp://www.hp.com/support/
Collect the f
• Technical support registration number (if applicable)
• Product serial numbers
• Product mod
• Applicable error messages
• Operating system type and revision level
• Detailed,
For continuous quality improvement, calls may be recorded or monitored.
HP recommends that customers sign up online using Subscriber’s choice website:
h
ttp://www.hp.com/go/e-updates.
• Subscrib
newer ver
numerous other product resources.
• After signing up, you can quickly locate your products by selecting Business support and then
Storage
ollowing information before calling:
el names and numbers
specificquestions
ing to this service provides you with e-mail updates on the latest product enhancements,
sions of drivers, and firmware documentation updates, as well as instant access to
under Product Category.
HP-authorized reseller
For the name of your nearest HP-authorized reseller:
• In the United States, call 1-800-345-1518.
• In Canada, call 1-800-263-5868.
• Elsewhere, visit the HP web site: h
telephone numbers.
ttp://www.hp.com,andclickContact HP to fi nd locations and
Smart Array Multipath software user guide
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10
About this guide
1Overview
This chapter discusses the following topics:
•Softwareoverview
• Software distribution
• Minimum requirements
• Supported operating systems
• Supported four-node configurations
Software ove
Smart Array Multipath software delivers dual path functionality, and supports failover capability for a
redundant HBA in a server with redundant cabling to an HP StorageWorks Modular Smart Array 500
Generation 2 storage system. This fault-tolerant tool enhances availability in clustering and DAS solutions
with up to two servers, managing up to 2 TB of stored data.
The software supports multiple I/O paths to the same logical volumes. When a path fails, the software
moves the logical drives from the failed path to the path of the redundant HBA in the same server.
Smart Array Multipath software works differently with Microsoft and Linux products, to provide specific
features t
rview
hat are compatible with the operating system functionality.
Software distribution
Smart Array Multipath software is included with the 4-port U320 Shared Storage Module option.
Smart Array Multipath software version 2.0B and later contain only Multipath I/O deliverables for
Microsoft Windows operating systems and is available only for web download from the HP website:
h
ttp://h18007.www1.hp.com/support/files/server.
ForLinuxoperatingsystems,seetheproceduresinthisguidetoconfigure the standard Linux drivers for
multipath usage.
Minimum r
Ensure t
• At least one server with two supported HBAs (Smart Array 642 adapters or future supported
• A suppor
• An MSA500 G2 storage system with the following:
equirements
hat your solution comprises the following hardware:
adapters) with updated firmware
ted operating system installed on the server or MSA500 G2 storage system
• At least one HP StorageWorks Modular Smart Array 500 Generation 2 Controller
•A2-Por
or
• A4-PortSharedStorageModuleandfourSCSIcables
t Shared Storage Module and two SCSI cables
For the latest versions of firmware, see the HP storage website: h
ntstorage.
prolia
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