HP 500 G2 Safety guide

HP StorageWorks
Smart Array Multipath software user guide
Part number: 354907-006
Sixth edition: June 2008

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 3

5 Troubleshooting . . ........................ 31
Problemdiagnosis..................................... 31
Problemsduringinstallation................................. 31
HBAfailure........................................ 32
Cablefailure ....................................... 32
AAcronymsandabbreviations ................... 33
Index .............................. 35
4

Tables
1Documentconventions............................... 8
2Two-server external boot configuration....................... 13
3Two-server internal boot configuration ....................... 13
4Two-server mixed boot configuration........................ 13
5Two-server cluster configuration.......................... 14
6Three-server external boot configuration ...................... 14
7Three-server internal boot configuration ...................... 14
8Three-server mixed boot configuration ....................... 15
9Listofcommonreturnvalues ........................... 20
Smart Array Multipath software user guide 5

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 Engineers
•Administrators
•Any one who wants to install, monitor, or manage the HP Smart Array Multipath software
NOTE:
HP assumes you are qualified in the servicing of computer equipment and trained in recognizing hazards
in products with hazardous energy levels.
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:
http://www.hp.com/support.
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Smart Array Multipath software user guide 7

Document conventions and symbols
Table 1 liststheconventionsusedinthisdocument.
Table 1 Document conventions
Convention Element
Medium blue text: Related
documentation Cross-reference links and e-mail addresses
Medium blue, underlined text
(http://www.hp.com)Website addresses
Bold font
•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
Italic font Text emphasis
Monospace font
•File and directory names
•System output
•Code
•Text typed at the command line
Monospace, italic font •Code variables
•Command-line variables
Monospace, bold font Emphasis of file and directory names, system output, code, and text
typed at the command line
CAUTION:
Indicates that failure to follow directions can result in damage to equipment or data.
IMPORTANT:
Provides clarifying information or specific instructions.
NOTE:
Provides additional information.
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8About this guide

HP technical support
Telephone numbers for worldwide technical support are listed on the HP support website:
http://www.hp.com/support/
Collect the following information before calling:
•Technical support registration number (if applicable)
•Product serial numbers
•Product model names and numbers
•Applicable error messages
•Operating system type and revision level
•Detailed, specificquestions
For continuous quality improvement, calls may be recorded or monitored.
HP recommends that customers sign up online using Subscriber’s choice website:
http://www.hp.com/go/e-updates.
•Subscribing to this service provides you with e-mail updates on the latest product enhancements,
newer versions of drivers, and firmware documentation updates, as well as instant access to
numerous other product resources.
•After signing up, you can quickly locate your products by selecting Business support and then
Storage 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: http://www.hp.com,andclickContact HP to find locations and
telephone numbers.
Smart Array Multipath software user guide 9

10 About this guide

1Overview
This chapter discusses the following topics:
•Softwareoverview
• Software distribution
• Minimum requirements
• Supported operating systems
• Supported four-node configurations
Software overview
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 that 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:
http://h18007.www1.hp.com/support/files/server.
ForLinuxoperatingsystems,seetheproceduresinthisguidetoconfigure the standard Linux drivers for
multipath usage.
Minimum requirements
Ensure that your solution comprises the following hardware:
•At least one server with two supported HBAs (Smart Array 642 adapters or future supported
adapters) with updated firmware
•A supported operating system installed on the server or MSA500 G2 storage system
•An MSA500 G2 storage system with the following:
• At least one HP StorageWorks Modular Smart Array 500 Generation 2 Controller
•A2-Por
t Shared Storage Module and two SCSI cables
or
• A4-PortSharedStorageModuleandfourSCSIcables
For the latest versions of firmware, see the HP storage website: http://www.hp.com/support/
proliantstorage.
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Smart Array Multipath software user guide 11

Supported operating systems
The Smart Array Multipath software supports the following operating systems:
•Microsoft
•Windows200
0 Server and Advanced Server with Service Pack 4
• Windows Server 2003 with Service Pack 1 (x86)
• Windows Server 2003 R2
•WindowsSe
rver 2003 x64 Edition
• Windows Server 2003 x64 Edition R2
•Linux
•RedHatEnt
erprise Linux
• UnitedLinux
• Novell SUSE Linux Enterprise Server 9.0
For information about the most current operating system support, errata kernels, and service pack
requirements, see the HP ProLiant Packaged Clusters website: http://www.hp.com/products/
sharedstorage.
Microsoft feature support
•Static LUN balancing enables the administrator to optimize I/O by assigning specific volumes to
specific paths in the storage system. If one path fails, the storage system moves volumes to the
path for the redundant HBA for I/O management.
•Server-based PCI Hot Plug functionality supports online HBA addition and replacement.
•Logical volume hot-add functionality supports online array expansion, extension, or both.
•Device Manager extension provides point-and-click multipath management.
•Configuration flexibility enables boot volumes for DAS solutions to reside on the storage system.
Linux feature support
•Static load (read-only) balancing enables the HBAs to optimize I/O with dual paths, to the same
volumes in the storage system. If one HBA fails, the storage system moves volumes to the path
for the redundant HBA for I/O management.
•Depending on the operating system, servers maintain boot volumes and enable greater storage
capacity on the storage system.
Multiple operating system feature support
•For multipath configurations with multiple operating systems, use Shared Storage Presentation
(SSP) to restrict HBAs from accessing logical volumes containing data from a different operating
system. For more information about SSP, see the documentation shipped with the 4-Port Shared
Storage Module.
Supported four-node configurations
The following sections discuss supported multipath configurations with their respective 4-Port Shared
Storage Module connections and locations, for boot and data volumes. These configurations require two
or three servers attached with four SCSI cables, to the MSA500 G2 storage system.
Two-server external boot configuration
All boot and data volumes reside on the MSA500 G2 storage system. lists the boot volume and data
volume location for the two-server external boot configuration.
12 Over view

Table 2 Two-server external boot configuration
Server Port (bus) Boot volume location Data volume location
1A1
B1 Storage system* Storage system
2A2
B2 Storage system* Storage system
* Red Hat Enterprise Linux operating systems support boot volumes on servers only. For a mixed or external
boot configuration in a multiple operating system environment, always locate the Linux boot volumes on
servers.
Two-server internal boot configuration
Boot volumes reside on their respective servers, while data volumes reside on the MSA500 G2 storage
system. Table 3 lists the boot volume and data volume location for the two-server internal boot
configuration.
Table 3 Two-server internal boot configuration
Server Port (bus) Boot volume location Data volume location
1A1
B1 Server 1 Storage system
2A2
B2 Server 2 Storage system
Two-server mixed boot configuration
One boot volume resides on the respective server, while the other boot volume resides on the MSA500
G2 storage system. Both data volumes reside on the MSA500 G2 storage system. Table 4 lists the boot
volume and data volume location for the two-server mixed boot configuration.
Table 4 Two-server mixed boot configuration
Server Port (bus) Boot volume location Data volume location
1A1
B1 Storagesystem* Storagesystem
2A2
B2 Server 2 Storage system
*Red Hat Enterprise Linux operating systems support boot volumes on servers only. For a mixed or external
boot configuration in a multiple operating system environment, always locate the Linux boot volumes on servers.
Two-server cluster configuration
Identical servers (hardware and software configuration) connect to the MSA500 G2 storage system. Boot
volumes reside on their respective servers, while both data volumes reside on the storage system. Table 5
lists the boot volume and data volume location for the two-server cluster configuration.
Smart Array Multipath software user guide 13

Table 5 Two-server cluster configuration
Server Port (bus) Boot volume location Data volume location
1A1
B1 Server 1 Storage system
2A2
B2 Server 2 Storage system
Three-server external boot configuration
All boot and data volumes reside on the MSA500 G2 storage system. One server connects to two ports.
Table 6 lists the boot volume and data volume location for the two-server cluster configuration.
Table 6 Three-server external boot configuration
Server Port (bus) Boot volume location Data volume location
1A1
B1 Storage system* Storage system
2A2 Storage system* Storage system
B2 Storage system* Storage system
*RedHatEnt
erprise Linux operating systems support boot volumes on servers only. For a mixed or external
boot configuration in a multiple operating system environment, always locate the Linux boot volumes on servers.
Three-server internal boot configuration
Boot volumes reside on their respective servers, while data volumes reside on the MSA500 G2 storage
system. One server connects to two ports. Table 7 lists the boot volume and data volume location
for the three-server internal boot configuration.
Table 7 Three-server internal boot configuration
Server Port (bus) Boot volume location Data volume location
1A1
B1 Server 1 Storage system
2A2 Server 2 Storage system
B2 Server 3 Storage system
Three-server mixed boot configuration
Two boot volumes reside on their respective servers, while one boot volume resides on the MSA500 G2
storage system. All data volumes reside on the MSA500 G2 storage system. One server connects to two
ports. Table 8 lists the boot volume and data volume location for the three-server mixed boot configuration.
14 Overview

Table 8 Three-server mixed boot configuration
Server Port (bus) Boot volume location Data volume location
1A1
B1 Storagesystem* Storagesystem
2A2 Server 2 Storage system
B2 Server 3 Storage system
* Red Hat Enterprise Linux operating systems support boot volumes on servers only. For a mixed or external
boot configuration in a multiple operating system environment, always locate the Linux boot volumes on servers.
Smart Array Multipath software user guide 15

16 O ve r view

2 Installation and operation in
Microsoft environments
This chapter discusses the following topics:
• Pre-installation hardware setup for Microsoft
• Installing Smart Array Multipath software
• Installing Smart Array Multipath software in cluster configurations
• Post-installation hardware setup for Microsoft
• Uninstalling Smart Array Multipath software
• Using silent installation
•StaticLUNbalancing
Pre-installation hardware setup for Microsoft
To prepare for software installation, complete the following steps:
1. Complete the MSA500 G2 storage system hardware installation, as follows:
NOTE:
For hardware and option installation procedures, see the appropriate storage system user guide or
the documentation that is shipped with the option.
a. Install the MSA500 G2 storage system.
b. Install the 4-Port Shared Storage module.
c. Install the MSA500 G2 controllers.
d. Update the system firmware, if needed.
2. Complete the server installation, as follows:
a. Install all hardware, including a second supported HBA. For more information, see the
appropriate server user guide.
IMPORTANT:
The server supports only one SCSI path during installation. If the server is already cabled for
amultipathconfiguration, disconnect the SCSI cable connected from the redundant HBA to
the storage system.
b. Install one of the supported operating systems.
c. Reboot the server.
3. Install multipath cabling for one of the Supported four-node configurations.
4. Ensure that only one SCSI cable is connected from the server to the MSA500 G2 storage
system. During installation, the Smart Array Multipath software supports only one SCSI path
per Microsoft based server.
5. Power up the storage system.
Wait for the controller display to provide a Startup Complete message.
6. Power up one of the servers.
Smart Array Multipath software user guide 17

Installing Smart Array Multipath software
CAUTION:
Before installing Smart Array Multipath software, update the HBA and MSA500 G2 controller drivers.
To install the Smart Array Multipath software, complete the following steps:
NOTE:
You can install this software prior to attaching the hardware.
1. Ensure that only a single path is connected to the storage devices.
2. Configure the storage sets.
3. Insert the Smart Array Multipath software CD-ROM on your server or a network drive.
4. Choose one of the following options to access the CD-ROM:
• From your server: If you have enabled AutoRun on your server, the setup program starts
automatically. Otherwise, select Start >Run, and then locate the Launch.exe program on
the CD-ROM drive.
• From your network drive: If you are accessing the CD-ROM on a network drive, select Start >
Run, and then locate the Launch.exe program on the network drive.
5. In the launch window, click Install Smart Array Multipath software.
6. Follow the on-screen instructions to complete the installation.
7. Restart the server.
8. Add the redundant paths to the storage devices.
Installing Smart Array Multipath software in cluster
configurations
To install Smart Array Multipath software on each member of a cluster configuration, complete the
following steps:
NOTE:
In a cluster configuration,SmartArrayMultipathsoftwaremustbeinstalledononenodeatatimefor
all nodes of the cluster.
1. Complete the pre-installation tasks.
2. Using Cluster Administrator, perform the following tasks :
a. Move all cluster resources owned by the current node to another node in the cluster.
b. Pause the current cluster node.
c. Select Resource Attributes >Disable failback for all groups containing resources managed
by the current node.
3. Install Smart Array Multipath software on the current node by following the steps described
in Installing Smart Array Multipath software.
4. Resume the current cluster node using the Cluster Administrator.
NOTE:
Repeat steps 2–4 for all nodes in the cluster.
18 Installation and operation in Microsoft environments

5. Using Cluster Administrator, perform the following tasks:
a. Restore failback for all groups containing resources, as needed.
b. Redistribute cluster, resources as desired.
Post-installation hardware setup for Microsoft
To prepare for software operation, complete the following steps:
1. Reconnect the SCSI cable from the redundant HBA to the MSA500 G2 storage system.
2. Cycle the server power.
3. Repeat steps 1 and 2 for each server.
4. Use the appropriate software for multipath operations.
Uninstalling Smart Array Multipath software
To remove Smart Array Multipath software, you must reconfigure SAN and reboot your server.
CAUTION:
Removing multipathing software from a multipath hardware configuration can cause data loss or
corruption. You must disconnect the server from the multipath storage, or eliminate all but one path to
that storage from the server, prior to removing Smart Array Multipath software.
To remove Smart Array Multipath software, complete the following steps:
1. Back up all user data on multipath storage.
2. If possible, disconnect the storage from the server. If it is necessary to maintain single-path
connection from the server to the storage (as in the case of servers that boot from a SAN device),
use the following guideline:
• If it is a one-host or one-storage array, HP recommends removing redundant cable
connections.
NOTE:
Ensure that you perform step 1 and step 2 before proceeding further.
3. Select Start >Settings >Control Panel >Add or Remove Programs.
4. Select Smart Array Multipath software from the Remove Program drop-down list.
5. Click Remove, and follow the on-screen instructions.
The system displays a cautionary message advising of the potential data loss or corruption
that may result from removing this software.
6. Close the Add/Remove Programs window.
NOTE:
The LUNs may be inaccessible at this time.
7. Reboot the system.
Using silent installation
Silent installation can be run from the CD-ROM on your system, or from a network drive. Smart Array
Multipath software installs with little manual intervention. Silent installation is useful if you are installing
thesoftwareonalargenumberofserversthatrequiresoftwareinstallation.
Smart Array Multipath software user guide 19

This section describes the following topics:
• Installing Smart Array Multipath software
• Uninstalling Smart Array Multipath software
Following is the syntax of the command for executing silent installation:
<install drive>:\MPInstall\setup.exe /s /f1“C:\setup.iss” /f2“C:\MPSIn-
stallLog.txt”
The <install drive> refers to the drive which contains the installation media. The setup.iss is
the response file from which information is taken for silent installation. The MPSInstallLog.txt file
records information about the silent installation.
The ResponseResult section of the MPSInstallLog.txt log file displays the result code, indicating
whether or not the silent installation succeeded. An integer value is assigned to the ResultCode keyname
in the ResponseResult section.
lists the common return values along with their descriptions in the ResultCode key.
Table 9 List of common return values
Result Code Description
0Success
–1 General error
–3 Required data not found in the setup.iss file
–4 Not enough memory available
–5 File does not exist
–6 Cannot write to the response file
–7 Unable to write to the log file
–8 Invalid path to the InstallShield Silent response ( .iss ) file
–51 Cannot create the specified folder
–52 Cannot access the specified file or folder
NOTE:
The C: in /f1C: and /f2C: refers to a local drive on the system, or a network drive that is used to obtain
the response file and write the MPSInstallLog.txt (provided there is write permission in the directory).
<Default_Target_Dir> = C:\Program Files\Hewlett-Packard\HP MPIO DSM\SMART ARRAY DSM
<User_Target_Dir> = a directory on the system on which the new installation is to be done or the
directory of an existing installation.
You must enclose the paths to the response file and the log file, which records the information about the
silent installation, in quotes(”).
Installing Smart Array Multipath software
To perform silent installation, complete the following steps:
1. Create a copy of the new.iss file in the installation kit.
2. Rename this copy of the file as setup.iss.
3. Choose one of the following options:
• To install the Microsoft MPIO Framework component along with the DSM component, use the
renamed default setup.iss file.
20 Installation and operation in Microsoft environments