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customer wants to move the sql server cluster SAN disks from EMC Square to HP.Server

  • December 7, 2009 at 9:44 pm

    #140447

    I have the active active cluster and the san disks are of EMC Square.Now HP is coming in place of EMC Square ,So customer wants to move the sql server cluster SAN disks from EMC Square to HP.Server will be same but disks will change....

    Any help<b>...</b>

    Thanks

  • December 8, 2009 at 2:24 am

    #1089069

    I'd shut down sql completely and simply immage (clone the disks) over onto your HP disks. Any differences should hopefully be handelde by the underlieing san os.

    Adam Zacks-------------------------------------------Be Nice, Or Leave

  • December 8, 2009 at 8:30 am

    #1089276

    Geoff Hiten explained how to do this on a MSDN Post:

    You can do this, it just takes a bit of downtime.

    Here are the steps:

    Begin by provisioning the new LUNs and presenting them to the cluster. Create disk resources around them and bring them into the SQL group.

    Shut SQL Server down, but leave the clustered disk resources online.

    Copy everything exactly from Old disk(s) to New Disk(s).

    Take the old disks out of the resource group.

    Change the old disk drive letters to some unused letters.

    Change the new disk drive letters to the old ones.

    Change the SQL Server group dependencies so that the SQL Server service is dependent on each disk resource.

    Restart SQL.

    Check everything before deleting the old disk resources and removing the LUNs from the cluster.

    SQL only uses drive paths to locate data files. If you change things "under the covers" so that new disks have the same folder structure and drive letters as the old ones, then SQL won't notice the difference.

    Jonathan Kehayias | Principal Consultant | MCM: SQL Server 2008
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  • December 8, 2009 at 8:40 am

    #1089280

    Be sure you document which items are on which drive letters. Easy to make am mistake when you are in the middle and confuse things.

    I'd also make a backup just to be safe. This should be easy, but go slow, double check yourself.

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