HP Modular Smart Array 500 Starter Kit User's Manual
Contents
1. vi Technical Support iier t rra DRE eben nb rede eg eed eta bee seeds vii llc E vii Authorized Reseller eerie cate cbesndes tre rete tret tte e eH dne epe eua ede vii Reader s Comments o oconeeio mpi esos ien ndn D odo Tr dna ees viii Chapter 1 System Preparation OOVET VIEW c 1 1 Minimum Requirement sess esent nennen sn tens enten tenis tns entere nene 1 1 Supported Operating Systems cece eeeeseescecseeceseceseceseceeeseeeeeaeeeaeecaaecsaecaecsaecesecsaeenes 1 2 Microsoft beature Suppott 2i eiie tebree este ttt era sad reta od b Peu be EH eO EGET 1 3 Linux Feature Support 00 cee eee eeseeeseeeseeeneecsaecaecsaecesecsseeseesseeseeeseeeeeaeeeaeeenaeenaees 1 3 Multiple Operating System Support sse 1 3 Supported Four Node Configurations 00 0 0 ccc cesceeceseceseeseeeeeeeeeseeeaeeeaaecaaecaecsaecsaeesseeees 1 4 Additional Microsoft Preparations ccccccecssccessseceeeeceeeeeceaeeeeaaeceeeeeceeeesaeceeaeeeeneessas 1 7 Additional Red Hat and SuSE Linux Preparations eene 1 8 Editing the Active Linux Kernel eese nennen 1 8 Modifying the RAIDTAB Configuration File eee 1 12 HP Smart Array Multipath Software User Guide iii Contents Chapter 2 Installation and Operation Preparing for Software Installation ee2. eeessseseeeeeeeeee eene 1 7 iv HP Smart Array Multipath Software User Guide About This Guide This guide provides installation and troubleshooting procedures for the Smart Array Multipath software for the HP StorageWorks Modular Smart Array 500 system Audience Assumptions This guide is for the person who installs administers and troubleshoots servers and storage systems HP assumes you are qualified in the servicing of computer equipment and trained in recognizing hazards in products with hazardous energy levels A Important Safety Information Before installing this product read the Important Safety Information document included with the server HP Smart Array Multipath Software User Guide v About This Guide Symbols in Text These symbols may be found in the text of this guide They have the following meanings WARNING Text set off in this manner indicates that failure to follow directions in the warning could result in bodily harm or loss of life CAUTION Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of information IMPORTANT Text set off in this manner presents essential information to explain a concept or complete a task NOTE Text set off in this manner presents additional information to emphasize or supplement important points of the main text Related Documents For additional information on the topics covered in this
3. website HP vii Index 2 HP Smart Array Multipath Software User Guide
4. B1 2 A2 Server 2 3 B2 Server 3 Linux operating systems support boot volumes on servers only For a mixed boot configuration in a multiple operating system environment always locate Linux boot volumes on servers Additional Microsoft Preparations Before installing Smart Array Multipath software on a server with a Microsoft operating system connect only one of the SCSI cables from one HBA to the MSAS500 system Leave the second SCSI cable to the redundant HBA disconnected After the multipath software is installed connect the second SCSI cable HP Smart Array Multipath Software User Guide 1 7 System Preparation Additional Red Hat and SuSE Linux Preparations IMPORTANT For Red Hat and SuSE operating sytems configure the system for multipath before installing the software from the CD For configuration instructions for UnitedLinux operating systems refer to Chapter 2 Installation and Operation Before installing Smart Array Multipath software on a server with a Red Hat or SuSE Linux operating system perform the following procedures e Always edit the active Linux kernel that enables the system to recognize the multipath hardware configuration Refer to Editing the Active Linux Kernel in this chapter e Always modify the raidtab configuration file to be sure it contains the appropriate information Refer to Modifying the RAIDTAB Configuration File in this chapter Editing the Active Linux Kernel To
5. Two Server External Boot Configuration Microsoft Only All boot and data volumes reside on the MSA500 system Table 1 1 Two Server External Boot Configuration Microsoft Only Server Port Bus Boot Volume Data Volume Location Location 1 A1 Storage system Storage system B1 2 A2 Storage system Storage system B2 Two Server Internal Boot Configuration Boot volumes reside on their respective servers while data volumes reside on the MSAS500 system Table 1 2 Two Server Internal Boot Configuration Server Port Bus Boot Volume Data Volume Location Location 1 A1 Server 1 Storage system B1 2 A2 Server 2 Storage system B2 HP Smart Array Multipath Software User Guide System Preparation Two Server Mixed Boot Configuration One boot volume resides on its respective server while the other boot volume resides on the MSA500 system Both data volumes reside on the storage system Table 1 3 Two Server Mixed Boot Configuration Server Port Bus Boot Volume Data Volume Location Location 1 A1 Storage system Storage system B1 2 A2 Server 2 Storage system B2 Linux operating systems support boot volumes on servers only For a mixed boot configuration in a multiple operating system environment always locate Linux boot volumes on servers Two Server Cluster Configuration Identical servers hardware and software configuration connect to the MSA500 system Boot volumes reside on their respective servers whil
6. edited properly Ifthe server has a Microsoft operating system be sure that the SCSI cable from the redundant HBA was disconnected before Smart Array Multipath software installation IMPORTANT After establishing a redundant configuration and adding a logical volume use Windows Disk Manager to detect the new volume If these steps do not solve the installation problem contact an authorized reseller 3 2 HP Smart Array Multipath Software User Guide Troubleshooting HBA Failure If one of the HBAs in the server fails the redundant HBA performs all I O operations To replace the failed HBA 1 Power down the HBA in one of the following ways Fora PCI based HBA in a Microsoft operating system environment use the PCI Hot Plug functionality in the server to power down the HBA while the server is online For an embedded HBA in a Microsoft operating system environment power down the server Foran HBA in a Linux operating system environment power down the server 2 Disconnect the SCSI cable from the connector on the HBA or from the external VHDCI connector on the server Remove the failed HBA Refer to the server maintenance and service guide 4 Install a replacement HBA Refer to the documentation that ships with the server or HBA 5 Connect the SCSI cable to the connector on the HBA or to the external VHDCI connector on the server 6 Power up the replacement HBA in one of the following way
7. overwrite the active config file Enter cp kernel 2 4 9 i686 enterprise config config When prompted to overwrite the existing file enter Y HP Smart Array Multipath Software User Guide 1 9 System Preparation SLES 7 Operating System To overwrite the active config file for the SLES 7 operating system 1 Locate the specific config file for the modified kernel a From the root level enter cd boot b Identify the appropriate config file by name for example vmlinuz config Copy the kernel to the root level directory and overwrite the active config file Enter cp vmlinuz config usr src linux arch i386 Go to the root directory Enter cd usr src linux arch i386 Save the current config in file in the current directory to a backup filename Copy the new config file and overwrite the config in file Enter cp vmlinuz config config in When prompted to overwrite the existing file enter Y Editing the Makeconfig File and Making the Kernel To edit the Makeconfig file l Open the configuration menu Enter make menuconfig Select Multi device support RAID and LVM Select RAID support Be sure that the RAID support option is checked with an asterisk If it is not checked use the space bar to cycle through the settings until an asterisk appears next to the option Select Multipath I O support HP Smart Array Multipath Software User Guide System Preparation 6 Be sure that the M
8. the command in the rc etc configuration files for mounted filesystems at boot time To start the RAID device enter raidstart dev mdo This command can be placed in shutdown scripts in etc For more information refer to the operating system documentation 1 16 HP Smart Array Multipath Software User Guide 2 Installation and Operation Preparing for Software Installation To prepare for software installation 1 Complete the MSA500 system hardware installation a Install the MSA500 system b Install the 4 Port Shared Storage Module c Install the controllers d Update the system firmware if needed 2 Complete the server installation a Install all hardware including a second supported HBA IMPORTANT For Microsoft operating system installation the server only supports one SCSI path during installation If the server is already cabled for a multipath configuration disconnect the SCSI cable connected from the redundant HBA to the storage system b Install a supported operating system c Rebootthe server 3 Install a multipath cabling configuration Refer to Supported Four Node Configurations in Chapter 1 HP Smart Array Multipath Software User Guide 2 1 Installation and Operation Depending on the operating system do one of the following Ifthe server has a Microsoft operating system be sure that only one SCSI cable is connected from the server to the MSA500 system During installati
9. the removal Click Cancel Shut down the server Disconnect the SCSI cable from the redundant HBA First Time Installation 1 To install the Smart Array Multipath software refer to the HP Smart Array Multipath Software CD Installation Instructions that ship with the CD After completing the installation instructions depending on the operating system do one of the following Ifthe server has a Microsoft operating system go to step 3 Ifthe server has a Linux operating system go to step 4 For a Microsoft operating system a Reconnect the SCSI cable from the redundant HBA to the MSA500 system b Cycle the server power Repeat steps 1 through 3 for subsequent servers Use the appropriate software for specific Microsoft or Linux multipath operations For Microsoft operating systems refer to Static LUN Balancing in this chapter For Red Hat or SuSE Linux operating systems refer to Static Load Read Only Balancing in this chapter For the UnitedLinux operating system refer to UnitedLinux Configuration in this chapter HP Smart Array Multipath Software User Guide Installation and Operation UnitedLinux Configuration After installing Smart Array Multipath software on a server with a UnitedLinux operating system configure for multipath operations Review the following sample configuration procedure This sample assumes that the user wants to set dev cciss c1d0p2 a
10. HP Smart Array Multipath Software User Guide ca October 2003 Third Edition Part Number 307958 003 2003 Hewlett Packard Development Company L P Microsoft and WindowsGare U S registered trademarks of Microsoft Corporation Hewlett Packard Company shall not be liable for technical or editorial errors or omissions contained herein The information in this document is provided as is without warranty of any kind and is subject to change without notice The warranties for HP products are set forth in the express limited warranty statements accompanying such products Nothing herein should be construed as constituting an additional warranty 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 HP Smart Array Multipath Software User Guide October 2003 Third Edition Part Number 307958 003 Contents About This Guide Audience ASSUMPU OMS ss eec ete nett eee eee een eei epe eta e ER eed vr as eee auod eene dune V Important Safety InfOrimatiOR c eet steer orte rette ee p et Pe rte be e Re ehe uta V Symbols in VOX ac m M AEE vi Related Documents si ie iR egre eC deno a da EV p PIE E e ST Ee env wees vi eub
11. at proc mdstatus Problems During Installation This section provides systematic instructions on what to try and where to go for help for the most common problems encountered during software installation If you encounter problems during installation 1 Ina Microsoft environment be sure to uninstall any previous version of the multipath software first Refer to Upgrade Procedures for Microsoft Operating Systems in Chapter 2 Installation and Operation 2 Be sure that the firmware is upgraded for all of the HBAs and both of the HP StorageWorks Modular Smart Array 500 controllers if installed HP Smart Array Multipath Software User Guide 3 1 Troubleshooting Be sure that the hardware installation meets the minimum requirements for the software Refer to Minimum Requirements in Chapter 1 System Preparation Be sure that the SCSI cabling configuration is complete Refer to Supported Four Node Configurations in Chapter 1 System Preparation Be sure that the HBA is functioning properly Refer to the appropriate server and HBA documentation If the HBA has failed refer to HBA Failure in this chapter Be sure that the SCSI cable is functioning properly If the cable has failed refer to Cable Failure in this chapter Be sure that you followed operating system specific instructions Ifthe server has a Red Hat or SuSE Linux operating system be sure that the active kernel is
12. configure the system for multipath operations 1 Modify the makefile Overwrite the active config file Edit the make config and make the kernel YN Make and install the module The procedures in this section provide examples for all these basic steps Modifying the Makefile IMPORTANT The following procedure is for Red Hat Linux only To modify the Makefile 1 Identify the name of the active kernel a At the root level enter uname a 1 8 HP Smart Array Multipath Software User Guide System Preparation b Identify the kernel An example is 2 4 9 e 3enterprise where enterprise is the name of the kernel Remember the name for use in later procedures Use an editor to modify the Makefile For example enter vi Makefile In the EXTRAVERSION field replace the current value typically e 3custom by entering e 3enterprise using the name of your kernel in place of enterprise Overwriting the Active Config File Depending on the operating system use the procedures below IMPORTANT Before overwriting any file create a backup of the original file Red Hat Operating Systems To overwrite the active config file for Red Hat operating systems 1 Locate the specific config file for the modified kernel a From the root level enter cd configs b Identify the appropriate config file by name for example 2 4 9 1686 enterprise config Copy the kernel to the root level directory and
13. e Driver in this chapter 2 Upgrade to Windows Server 2003 3 Install Smart Array Multipath software v2 0 or later Refer to First Time Installation in this chapter Upgrading from v1 0 to v2 0 1 Uninstall Smart Array Multipath software v1 0 Refer to Uninstalling Smart Array Multipath Software Driver in this chapter 2 Install Smart Array Multipath software v2 0 or later Refer to First Time Installation in this chapter Uninstalling Smart Array Multipath Software Driver To uninstall the software CAUTION Before uninstalling the software driver in a Microsoft Windows Server 2003 clustering environment use the Cluster Administrator to stop the cluster service on the appropriate node 1 Power down the server 2 Disconnect all SCSI cables from any Smart Array 532 Controllers in the system unless the boot drive is attached Power up the server Select Start gt Settings gt Control Panel Select Add Remove Programs OV Oy oP a From the list of components select Compaq Smart Array Redundancy Filter Driver NOTE For Microsoft Windows Server 2003 only the selection is Compaq Smart Array Multipath Driver 7 Click Change Remove HP Smart Array Multipath Software User Guide 2 3 Installation and Operation 9 10 11 Click OK NOTE A Microsoft Windows Server 2003 system does not indicate progress during the removal Wait at least 10 minutes to allow the system to complete
14. e both data volumes reside on the storage system Table 1 4 Two Server Cluster Configuration Server Port Bus Boot Volume Data Volume Location Location 1 A1 Server 1 Storage system B1 2 A2 Server 2 Storage system B2 HP Smart Array Multipath Software User Guide 1 5 System Preparation Three Server External Boot Configuration Microsoft Only All boot and data volumes reside on the MSA500 system One server connects to two ports Table 1 5 Three Server External Boot Configuration Microsoft Only Server Port Bus Boot Volume Data Volume Location Location 1 A1 Storage system Storage system B1 2 A2 3 B2 Three Server Internal Boot Configuration Boot volumes reside on their respective servers while data volumes reside on the MSAS500 system One server connects to two ports Table 1 6 Three Server Internal Boot Configuration Server Port Bus Boot Volume Data Volume Location Location 1 A1 Server 1 Storage system B1 2 A2 Server 2 3 B2 Server 3 1 6 HP Smart Array Multipath Software User Guide System Preparation Three Server Mixed Boot Configuration Two boot volume resides on their respective servers while one boot volume resides on the MSA500 system All data volumes reside on the storage system One server connects to two ports Table 1 7 Three Server Mixed Boot Configuration Server Port Bus Boot Volume Data Volume Location Location 1 Al Storage system Storage system
15. e nearest authorized reseller In the United States call 1 800 345 1518 In Canada call 1 800 263 5868 Elsewhere see the HP website for locations and telephone numbers HP Smart Array Multipath Software User Guide vii About This Guide Reader s Comments HP welcomes your comments on this guide Please send your comments and suggestions by e mail to ServerDocumentation hp com viii HP Smart Array Multipath Software User Guide 1 System Preparation Overview Smart Array Multipath software delivers dual path functionality and supports failover capability for redundant host bus adapters HBAs in a server with redundant cabling to an HP StorageWorks Modular Smart Array 500 system This fault tolerant tool enhances availability in clustering and direct attached storage 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 operating system functionality Minimum Requirements Be sure that your solution consists of the following hardware e At least one server with two supported HBAs Smart Array 5i 5i or 532 controllers with updated firmware e A supported
16. ev md0 spare filesystem Configuration is complete To perform multipath operations refer to Static Load Read Only Balancing in this chapter 2 6 HP Smart Array Multipath Software User Guide Installation and Operation Multipath Operations Microsoft Browser Security Settings For Windows Server 2003 the modified version of Internet Explorer 6 0 defaults all servers to the Internet zone which enables the highest level of security At this security level browsing to HP Management agents generates many security messages To avoid these security messages 1 Open Internet Explorer 6 0 Select Tools gt Internet Options 2 3 Select the Security tab 4 Click Local intranet 5 Manually set the servers to the Local intranet zone by entering http lt servername or IP address gt 2301 https lt servername or IP address gt 2381 Static LUN Balancing The Smart Array Multipath software and Microsoft operating system support static LUN balancing The movement of drives to specific paths can be done two ways e Locally with a Device Manager Extension DME e Remotely with the Smart Array Multipath found on the Smart Array Multipath Software CD To balance LUNs with the DME 1 From the desktop right click My Computer 2 Click Manage The Device Manager window opens 3 Click SCSI and RAID Controllers HP Smart Array Multipath Software User Guide 2 7 Installation and Operation Right click o
17. guide refer to the following documentation e HP StorageWorks Modular Smart Array 500 System User Guide e HP StorageWorks Modular Smart Array 500 System Hardware Configuration and Installation poster e 4 Port Shared Storage Module Installation Instructions e HP Array Configuration Utility User Guide Getting Help If you have a problem and have exhausted the information in this guide you can get further information and other help in the following locations vi HP Smart Array Multipath Software User Guide About This Guide Technical Support In North America call the HP Technical Support Phone Center at 1 800 652 6672 This service is available 24 hours a day 7 days a week For continuous quality improvement calls may be recorded or monitored Outside North America call the nearest HP Technical Support Phone Center Telephone numbers for worldwide Technical Support Centers are listed on the HP website www hp com Be sure to have the following information available before you call HP Technical support registration number if applicable Product serial number Product model name and number Applicable error messages Add on boards or hardware Third party hardware or software Operating system type and revision level HP Website The HP website has information on this product as well as the latest drivers and flash ROM images You can access the HP website at www hp com Authorized Reseller For the name of th
18. l preparations 1 7 Array Configuration Utility 2 9 array controllers supported 1 1 authorized reseller vii C cable failure 3 4 Config file overwriting 1 9 configurations four node 1 4 D Device Manager Extension 2 7 F firmware updates 2 1 H HBA failure 3 3 HP website vii l Insight Management Agents 3 1 installation preparation 2 1 installation procedure 2 4 Index K kernel procedures 1 10 L Linux additional preparations 1 8 feature support 1 3 M Makefile modifications 1 8 Microsoft additional preparations 1 7 feature support 1 3 minimum requirements 1 1 modules in Linux 1 11 multipath operations 2 7 O operating systems feature support 1 3 Linux preparations 1 8 Microsoft preparations 1 7 multiple support 1 3 support 1 2 overview 1 1 HP Smart Array Multipath Software User Guide Index 1 Index P PCI Hot Plug functionality 1 3 R raidtab configuration file 1 12 requirements minimum 1 1 S static load read only balancing functionality 2 9 support 1 3 static LUN balancing support 1 3 with Device Manager 2 7 with ProLiant Storage Manager 2 8 support array controllers 1 1 configurations four node 1 4 multiple operating systems 1 3 operating systems 1 2 static LUN balancing 1 3 symbols in text vi T technical support vii telephone numbers vii troubleshooting cable failure 3 4 HBA failure 3 3 installation 3 1 U updating firmware 2 1 Ww
19. multipath nr raid disks 2 persistent superblock 1 chunk size 8 device dev cciss c0d2p2 raid disk 0 device dev cciss cid2p2 raid disk 1 HP Smart Array Multipath Software User Guide System Preparation raiddev dev md2 raid level nr raid disks persistent superblock chunk size device raid disk device raid disk multipath 2 al 8 dev cciss c0d2p3 0 dev cciss cid2p3 1 Completing the Linux Multipath Setup After a valid raidtab file is created in the etc directory verify that the correct drivers and modules are loaded To verify properly loaded files 1 Verify that the md and multipath drivers are loaded either statically or by a module load Enter lsmod This command reveals which modules are running Examining the boot time messages reveals the static loaded drivers IMPORTANT If you have made configuration changes to the kernel including the multipath or dev md driver and have not rebooted from the new kernel you must reboot before continuing Red Hat and SuSE typically include the md driver in the kernel HP Smart Array Multipath Software User Guide System Preparation 2 Verify that the md driver is in the kernel Enter dmesg grep md more This command shows the boot time messages If the md driver was loaded several messages should appear similar to the following messages md md driver version X X md Autodetecting RAID arrays md autorun md autoru
20. n DONE 3 Ifthe multipath driver was built as a module but not loaded load the module Enter insmod multipath This command loads the driver If the driver does not load the multipath module rebuild the module Refer to Making and Installing the Module in this chapter 4 After verifying loaded drivers make the raid files For the sample partition table in the Sample RAIDTAB Configuration File section enter mkraid dev mdO mkraid dev md1i mkraid dev md2 mkraid dev md3 CAUTION Do not use Fdisk or mkraid to create any other partitions on this logical drive This action results in data corruption and data loss 5 If mkraid responds that the partition contains existing data do the following a Force the mkraid to run Enter mkraid f HP Smart Array Multipath Software User Guide 1 15 System Preparation b Make filestystems on the raid devices Enter mkfs t ext2 dev mdo mkfs t ext2 dev md1 mkfs t ext2 dev md2 mkfs t ext2 dev md3 mkfs t ext2 dev md4 IMPORTANT The example in step 5b uses ext2 because known bugs in the ext3 filesystem can cause data corruption 6 The multipath RAID device should be functioning To mount the device dev md0 enter mount dev md0 spare filesystem If necessary you can stop or start the RAID device with the following commands To stop the RAID device enter raidstop dev mdo This command may need to start the md device after a reboot Place
21. nd dev cciss c2d0p2 to point to the same volume as a multipath device To configure the system for multipath use l To create multipath device dev md0 run Be sure that the MSA500 system contains two controllers connected to the same logical volume mdadm create level multipath n 2 dev mdo dev cciss cid0p2 dev cciss c2d0p2 To review the status run mdadm D dev mdo Results should look similar to the following dev mdp Version 00 90 00 Creation Time Mon Apr 29 09 15 00 2003 Raid Level multipath Array Size 14683328 14 00 GiB 15 08 GB Raid Devices 2 Total Devices 2 Preferred Minor 0 Persistence Superblock is persistent Update Time Mon Apr 29 09 02 00 2003 State dirty no errors Active Devices 2 HP Smart Array Multipath Software User Guide 2 5 Installation and Operation 4 5 Working Devices 2 Failed Devices 0 Spare Devices 0 Number Major Minor RaidDevice State O 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 running proc mdstat Results would look similar to the following Personalities multipath read_ahead 1024 sectors mdO active multipath cciss c2d0p2 0 cciss c1d0p2 1 14683328 blocks 2 2 UU unused devices lt none gt To format the volume run mkfs t ext2 dev mdo To mount the volume run mount d
22. ne of the array controller icons and click Properties When the Properties window opens click the Redundancy Configuration tab From the Redundancy Configuration tab the administrator can view the following controller information Name Slot number Status Slot number of redundant controller Controller tree In the controller tree right click one of the logical volumes and then click Switch Path The system moves the logical volume to the other path To manage your redundant configuration l a 0 Mm eA First time users must install the software Install the ProLiant Storage Manager software and Smart Array Multipath Manager software Refer to the Smart Array Multipath Software CD Installation Instructions Browse to the System Management Homepage by entering https lt name of server gt 2381 IMPORTANT If you encounter numerous security messages on a Windows Server 2003 platform refer to Microsoft Browser Security Settings in this chapter To accept the security certificate click Yes The system may prompt for the administrator password established during the original software installation The System Management Homepage opens Click the Home tab Select ProLiant Storage Manager A new window opens Click the appropriate controller on the Device View tab Click Multipath Management The Multipath Management and Configuration screen displays 2 8 HP Smart Array Multipath Software U
23. on the Smart Array Multipath software supports only one SCSI path per Microsoft based server Ifthe server has a Red Hat or SuSE Linux operating system edit the active kernel and modify the RAIDTAB configuration Refer to Additional Red Hat and SuSE Linux Preparations in Chapter 1 Power up the storage system Wait for the controller display to provide a Startup Complete message Power up one of the servers Installing the Smart Array Multipath Software Upgrade Procedures for Microsoft Operating Systems Use the appropriate procedure in this section when upgrading the multipath software or your Microsoft operating system IMPORTANT Systems running Microsoft Windows 2000 with Service Pack 4 or Windows Server 2003 must use Smart Array Multipath Software v2 0 or later Upgrading to Windows 2000 Service Pack 4 or Later 1 Uninstall Smart Array Multipath software v1 0 if installed Refer to Uninstalling the Smart Array Multipath Software Driver in this chapter Install the service pack Install Smart Array Multipath software v2 0 or later Refer to First Time Installation in this chapter Upgrading to Microsoft Windows Server 2003 To upgrade your operating system to Microsoft Windows Server 2003 2 2 HP Smart Array Multipath Software User Guide Installation and Operation 1 Uninstall Smart Array Multipath software if installed Refer to Uninstalling Smart Array Multipath Softwar
24. operating system installed on the server or MSA500 system HP Smart Array Multipath Software User Guide 1 1 System Preparation e An MSA500 system with the following Atleast one HP StorageWorks Modular Smart Array 500 controller A 2 Port Shared Storage Module and two SCSI cables Or A 4 Port Shared Storage Module and four SCSI cables For the latest versions of firmware refer to www hp com Supported Operating Systems Supported operating systems include e Microsoft Windows 2000 Windows Server 2003 IMPORTANT Systems running Microsoft Windows 2000 with Service Pack 4 or Windows Server 2003 must use Smart Array Multipath Software v2 0 or later e Linux Red Hat SuSE Linux Enterprise Server SLES UnitedLinux IMPORTANT Systems running UnitedLinux v1 0 must e Use Service Packs 1 and 2 e Use Smart Array Multipath Software v2 0 or later For the most current operating system support information refer to www hp com products sharedstorage 1 2 HP Smart Array Multipath Software User Guide System Preparation Microsoft Feature Support Features supported under Microsoft operating systems include 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 system moves volumes to the path for the redundant HBA for I O management Server based PCI Hot Plug functionality supp
25. orts online HBA addition and replacement Logical volume hot add functionality supports online array expansion extension ProLiant Storage Manager software and device manager extension provide point and click multipath management Configuration flexibility enables boot volumes for DAS solutions to reside on the storage system Linux Feature Support Features supported under Linux operating systems include 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 system moves volumes to the path for the redundant HBA for I O management Servers maintain boot volumes and enable greater storage capacity on the storage system Multiple Operating System Support For multipath configurations with multiple operating systems use Selective Storage Presentation SSP to restrict HBAs from accessing logical volumes containing data from a different operating system For more information about SSP refer to the documentation that ships with the 4 Port Shared Storage Module HP Smart Array Multipath Software User Guide 1 3 System Preparation Supported Four Node Configurations The following sections identify 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 system
26. s Use PCI Hot Plug functionality 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 the I O for multipath operation Refer to Chapter 2 Installation and Operation HP Smart Array Multipath Software User Guide 3 3 Troubleshooting Cable Failure To replace the failed cable 1 Power down the HBA in one of the following ways Fora PCI based HBA in a Microsoft operating system environment use the PCI Hot Plug functionality in the server to remove the HBA while the server is online For an embedded HBA in a Microsoft operating system environment power down the server For an HBA in a Linux operating system environment power down the server Disconnect the SCSI cable a Disconnect the cable from the MSA500 system b Disconnect the cable from the connector on the HBA or from the external VHDCI connector on the server Connect the replacement cable a Connect the cable to the connector on the HBA or to the external VHDCI connector on the server b Connect the cable to the MSA500 system Apply power to the replacement HBA in one of the following ways Use PCI Hot Plug functionality to restore power PCI based Microsoft Only Power up the server HP Smart Array Multipath Software User Guide A additiona
27. se 2 1 Installing the Smart Array Multipath Software sees 2 2 Upgrade Procedures for Microsoft Operating Systems see 2 2 Uninstalling Smart Array Multipath Software Driver eee 2 3 First Time Installation tct eerte teorie ete e ec eene iia 2 4 UnitedLainu x Configuration edente Ee te eR a EE ERR e UR Fe 2 5 Multipath Operations 2 0 cnet etit pu tree neret n tatus ev E eoe pu EEEE 2 7 Microsoft Browser Security Settings essere nennen enne 2 7 Static LUN Balancing teer ee Pee dani e Eee ERR ERROR tu ERE Rd 2 7 Static Load Read Only Balancing eese 2 9 Chapter 3 Troubleshooting Problem Diagnosis eee trei e eta e E RE ek redit aieia aa 3 1 Problems During Installation aote teet Ert inte EE EERE 3 1 HBA Pant cc 3 3 acd x ek a tet ee ee hed neers 3 4 Index List of Tables 1 1 Two Server External Boot Configuration Microsoft Only esses 1 4 1 2 Two Server Internal Boot Configuration eese 1 4 1 3 Two Server Mixed Boot Configuration essseseseeeeeeeeeee eene 1 5 1 4 Two Server Cluster Configuration eese nennen 1 5 1 5 Three Server External Boot Configuration Microsoft Only sss 1 6 1 6 Three Server Internal Boot Configuration esee 1 6 1 7 Three Server Mixed Boot Configuration
28. ser Guide Installation and Operation 8 From the Multipath Management and Configuration screen do one of the following To move all drives from the current path to the redundant path click the link for the controller and select Switch All Paths The system moves all drives to the redundant path To move a drive from one path to the redundant path click the link for the drive and select Switch Path IMPORTANT After establishing a redundant configuration and adding a logical volume use Windows Disk Manager to detect the new volume Static Load Read Only Balancing The Smart Array Multipath software and Linux operating system support static load read only balancing functionality To create add or extend logical volumes use ACU Version 6 0 or later Locate ACU on the SmartStart CD Refer to the HP Array Configuration Utility User Guide on the SmartStart CD or refer to the HP website www hp com HP Smart Array Multipath Software User Guide 2 9 3 Troubleshooting Problem Diagnosis When a problem exists with the multipath I O consult the Insight Management Agents and do one of the following e For Microsoft operating systems Use the ProLiant Storage Manager FAQs Use the ProLiant Storage Manager software and the Device Manager Extension to identify I O path status e For Linux operating systems use the following command to identify HBA status multipath status and I O block transfer size c
29. sks in the array specified in the dev cciss directory e persistent superblock must be set to 1 if an md device is to be mounted used during a reboot e chunk size sets the stripe size in bytes in the power of 2 e device the physical device that makes up the RAID array e raid disk the index of the device in the RAID array For more information refer to the operating system documentation Sample RAIDTAB Configuration File The following raidtab sample file is for a multipath configuration with three partitions dev md0 dev md1 and dev md2 where each md device represents a partition on the device If another partition is needed add it as dev md3 with the same characteristics as the preceding partitions The limit for number of partitions is four primary partitions However creating one of the four partitions as a type type Oxf Win 95 Ext d LBA partition enables you to create extended logical partitions inside of the primary partition Inside of the extended partition you can create additional Linux partitions HP Smart Array Multipath Software User Guide System Preparation The raidtab configuration file must reside in the etc directory The contents of etc raidtab should resemble the following raiddev dev mdo raid level multipath nr raid disks 2 persistent superblock 1 chunk size 8 device dev cciss cOd2p1 raid disk 0 device dev cciss cid2p1 raid disk 1 raiddev dev md1 raid level
30. ultipath I O support option is set as a module If it is not set as a module use the space bar to cycle through the settings until an M appears next to the option 7 Press the Esc key twice to exit the menus 8 When prompted to save the new kernel configuration press the Enter key to select Yes 9 Make the kernel a From the root level enter make b Wait for the kernel to be made Depending on the hardware configuration this process can last up to 30 minutes Making and Installing the Module To make and install the module 1 From the root level enter make modules 2 Wait for the modules to be made 3 After the module is made install the module a From the root directory enter make modules_install b Load the module Enter insmod multipath 4 Verify that the module is installed and loaded by listing all modules Enter lsmod The kernel is now ready for multipath operations HP Smart Array Multipath Software User Guide 1 11 System Preparation Modifying the RAIDTAB Configuration File To perform multipath operations with a Linux operating system a raidtab configuration file must be present Use the instructions in the following sections to be sure the raidtab configuration file contains the appropriate information RAIDTAB Terms Observe the following definitions for raidtab terms e raiddev introduces the configuration for a particular device e nr raid disks the number of raid di
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