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HP StoreVirtual 4000 Deployment Manual

Lefthand storage dsm for mpio deployment guide
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Download this manual See also: Configuration Manual, Maintenance Manual
HP LeftHand Storage DSM for MPIO
Deployment Guide
HP Part Number: AX696-96220
Published: November 2012
Edition: 2

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Summary of Contents for HP StoreVirtual 4000

  • Page 1 HP LeftHand Storage DSM for MPIO Deployment Guide HP Part Number: AX696-96220 Published: November 2012 Edition: 2...
  • Page 2 © Copyright 201 1, 2012 Hewlett-Packard Development Company, L.P.

  • Page 3: Using Mpio

    1 Using MPIO Description of the HP LeftHand DSM for Microsoft MPIO The HP LeftHand DSM for Microsoft MPIO provides enhanced MPIO functionality as follows: Automatic creation of an I/O path to each storage system in the cluster on which the volume resides, plus a path for the administrative connection.

  • Page 4: Best Practices

    Best Practices If MPIO is not required, then do not install the DSM for MPIO or do not enable the Microsoft MPIO service. If currently using the DSM for MPIO, then upgrade to the latest version. Recommended uses for DSM for MPIO: For maximum possible performance for specified configurations.
  • Page 5 Prerequisites Windows Server 2003 32-bit or 64-bit version of Windows Server 2003 The latest Microsoft iSCSI Initiator Microsoft DSM installed Windows Server 2008 and Server Core option 32-bit or 64-bit version of Windows Server 2008, the Server Core, Windows Server 2008 R2, or R2 Server Core installations The Microsoft iSCSI Initiator, which comes installed with all Windows Server 2008 and the Server Core installation...

  • Page 6: Connecting Volumes With Mpio

    Accept the terms of the license agreement and click Next. The installation wizard takes you through the installation process for the DSM for MPIO. Reboot the server to complete the installation. Perform a silent install for Windows Server 2008 Server Core option Open a command prompt and use the cd command to navigate to setup.exe in the installation media.

  • Page 7: Connecting Volumes In A Multi-Site San

    Figure 2 Configuring advanced settings for multiple NICs Click OK to close the Advanced Settings dialog. Click OK again to finish logging on. 1 1. If you want to set the MPIO load balancing policy, see “Setting the Microsoft DSM MPIO load balancing policy”...
  • Page 8 Figure 3 Multi-site SAN VIPs with MPIO Setting the Microsoft DSM MPIO load balancing policy When you connect application servers to volumes, you can also set the MPIO load balancing policy in the iSCSI Initiator. Supported load balancing options Only two load balancing options are supported, Fail Over and Round Robin. For the Microsoft DSM with Windows 2003 Server, only the Fail Over Only option is supported.
  • Page 9 Figure 5 DSM for MPIO with two NICs in the server and Round Robin MPIO load balancing Figure 6 Microsoft DSM with two NICs in the server and Fail Over MPIO load balancing Figure 7 Microsoft DSM with two NICs in the server and Round Robin MPIO load balancing NOTE: Be sure to follow the steps below to set the MPIO load balancing policy.

  • Page 10: Troubleshooting Mpio

    Click the MPIO button or tab. If the MPIO button or tab is not available, MPIO is not installed and enabled. From the Load balancing policy drop-down list, select either Fail Over Only or Round Robin. Click OK. Click OK. Troubleshooting MPIO Verifying DSM for MPIO operations After logging on to a volume via iSCSI, the DSM for MPIO automatically builds a data path to...
  • Page 11 Figure 9 Multiple paths ensure continued I/O in event of path failure When the problem with the I/O path is repaired, the DSM for MPIO reconnects an I/O path to the storage system, thus restoring optimized performance and fault tolerance. Verifying Microsoft DSM operations If you see two devices that are exactly the same listed in the Disk Manager or My Computer, you may not have MPIO installed or you may not have logged using MPIO.

  • Page 12: Performing A Silent Uninstall For The Windows 2008 Server Core Option

    Performing a silent uninstall for the Windows 2008 Server Core option IMPORTANT: Uninstalling the DSM for MPIO requires a reboot of the system. Open a command prompt and use the cd command to navigate to setup.exe in the installation media. Type the following command: setup /removeonly /s /f1 .\uninst.iss The uninstall begins.

  • Page 13: Documentation Feedback

    2 Documentation feedback HP is committed to providing documentation that meets your needs. To help us improve the documentation, send any errors, suggestions, or comments to Documentation Feedback (docsfeedback@hp.com). Include the document title and part number, version number, or the URL when submitting your feedback.

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