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HP StorageWorks
Smart Array Multipath software user guide

Part number: 354907-006

Sixth edition: June 2008

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Summary of Contents for 500 G2

Page 1: ...HP StorageWorks Smart Array Multipath software user guide Part number 354907 006 Sixth edition June 2008 ...

Page 2: ...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 erro...

Page 3: ...are in cluster configurations 18 Post installation hardware setup for Microsoft 19 Uninstalling Smart Array Multipath software 19 Using silent installation 19 Installing Smart Array Multipath software 20 Uninstalling Smart Array Multipath software 21 Static LUN balancing 21 3 Installation and operation in Red Hat Enterprise Linux 3 0 and 4 0 environments 23 Pre installation hardware setup for Red ...

Page 4: ...5 Troubleshooting 31 Problem diagnosis 31 Problems during installation 31 HBA failure 32 Cable failure 32 A Acronyms and abbreviations 33 Index 35 4 ...

Page 5: ...nfiguration 13 4 Two server mixed boot configuration 13 5 Two server cluster configuration 14 6 Three server external boot configuration 14 7 Three server internal boot configuration 14 8 Three server mixed boot configuration 15 9 List of common return values 20 Smart Array Multipath software user guide 5 ...

Page 6: ...6 ...

Page 7: ... 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 websit...

Page 8: ...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 directio...

Page 9: ...ng 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 Catego...

Page 10: ...10 About this guide ...

Page 11: ...re 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 For Linux operating systems see the procedures in thi...

Page 12: ...ibility 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 enabl...

Page 13: ...figuration 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 1 A1 B1 Storag...

Page 14: ...ation 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 serve...

Page 15: ...Storage system 2 A2 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 ...

Page 16: ...16 Overview ...

Page 17: ...ared 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 a multipath configuration disconnect th...

Page 18: ...t 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 Smart Array Multipath sof...

Page 19: ...ultipath 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 furthe...

Page 20: ...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 ...

Page 21: ...onfigured either for Boot From SAN or systems with page hibernate or dump files on the disk array uninstalling the last DSM may not remove all the related components To work around this issue ensure that the MPIO framework is installed along with the DSM during the subsequent installation of any supported HP MPIO DSM Failure to do so can result in an unsuccessful system boot Static LUN balancing T...

Page 22: ...22 Installation and operation in Microsoft environments ...

Page 23: ...rt 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 See the server user guide or the documentation that ships with the option b Install one of the supported operating systems c Reboot the server 3 Install multipath cabling for one of the Supported fo...

Page 24: ...ystem for multipath use complete the following steps 1 Ensure that the MSA500 G2 storage system contains two identical MSA500 G2 controllers connected to the same logical volume 2 To create multipath device dev md0 enter the following command mdadm create level multipath n 2 dev md0 dev cciss c1d0p2 dev cciss c2d0p2 3 To review the status enter the following command mdadm D dev md0 The output disp...

Page 25: ...nter the following command echo DEVICE device1 devicen dev mdadm conf mdadm detail scan etc mdadm conf For more information on the mdadm command enter the following command man mdadm Configuration is complete Static load read only balancing in Red Hat Enterprise Linux 3 0 and 4 0 The Smart Array Multipath software and Linux operating system support static load read only balancing functionality To ...

Page 26: ...26 Installation and operation in Red Hat Enterprise Linux 3 0 and 4 0 environments ...

Page 27: ... 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 See the server user guide or the documentation that ships with the option b Install one of the supported operating systems c Reboot the server 3 Install multipath cabling for one ...

Page 28: ... of your choice edit the file etc sysconfig kernel and add your driver to the INITRD_MODULES variable For example If your system contains a controller that is accessed by the cciss driver you are using ReiserFS as a filesystem and qla2xxx driver edit the variable to be INITRD_MODULES cciss reiserfs qla2xxx After applying this change be sure to recreate the INITRD by running the mkinitrd command NO...

Page 29: ...Working Devices 2 Failed Devices 0 Spare Devices 0 Number Major Minor RaidDevice State 0 106 2 0 active sync dev cciss c2d0p2 1 105 2 1 active sync dev cciss c1d0p2 UUID b1ec5895 5ed49b44 7ec7d4a8 397e19b1 IMPORTANT You can also review status by entering the following command cat proc mdstat The output displayed must be similar to the following Personalities multipath read_ahead 1024 sectors md0 a...

Page 30: ...read only balancing functionality To create add or extend logical volumes use ACU Version 7 10 or later Locate ACU on the SmartStart CD For more information on the ACU see HP Array Configuration Utility User Guide on the SmartStart CD or see the HP website http www hp com 30 Installation and operation in Novell SUSE Linux Enterprise Server 9 0 environments ...

Page 31: ...ersion of the multipath software first 2 Ensure that the firmware is upgraded for all HBAs and both the MSA500 G2 controllers if installed 3 Ensure that the hardware installation meets the Minimum requirements 4 Ensure that the SCSI cabling matches one of the Supported four node configurations 5 Ensure that the HBA is functioning properly See the appropriate server and HBA documentation If the HBA...

Page 32: ...tionality to restore power Power up the server IMPORTANT In a Microsoft environment the software recognizes the replacement HBA and automatically restores redundancy 7 If operating in a Linux environment reconfigure I O for multipath operation Cable failure To replace the failed cable complete the following steps 1 Power down the HBA in one of the following ways For a PCI based HBA in a Microsoft ...

Page 33: ...ules HBA host bus adapter LBA logical block addressing LUN logical unit number MPIO Multipath IO MSA Modular Storage Array RPM Red Hat Package Manager SCSI Small Computer System Interface SSP Selective Storage Presentation VHDCI Very High Density Cable Interconnect Smart Array Multipath software user guide 33 ...

Page 34: ...34 Acronyms and abbreviations ...

Page 35: ... Management Agents 31 management pack overview 1 1 Microsoft procedures 17 Microsoft support 12 Minimum hardware configuration 1 1 multipath operations 25 30 multipath software overview 1 1 O overview management pack 1 1 overview product 1 1 overview web interface 1 1 P PCI Hot Plug functionality 12 powering up 17 Problem diagnosis 31 ProLiant Storage Manager 31 S SCSI cabling 32 Selective Storage...

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