Connecting a LUN to a windows machine

Posted on 2012-09-19
Last Modified: 2013-10-21
I have a windows 2003 server which was connected to part of a large SAN.   This part of the SAn was connected as a LUN on the windows server, however the switch between the Windows box and the SAN went down for a bit and when it came back up the LUN was missing.

How do I add the LUN back in windows 2003 server?  The Windows box can see the SAN but the LUN does not come back up.
Question by:wannabecraig
    LVL 6

    Accepted Solution

    Have you tried rescanning the disks in the device manager? Do you have any tools like powerpath or hb anywhere or something to see if the LUN disks are visible to the windows 2003 server? Maybe you need to restart your windows server.

    I am assuming that the LUn is still presented to the server and all the problem with your SAN is resolved.
    LVL 1

    Author Comment


    Issues with SAN resolved, Windows server can ping SAN.
    Tried restarting, no result.
    Re-scanned disks, nothing shows.  
    Dont have powerpath of hb anywhere, don't know what they are.
    LVL 10

    Assisted Solution

    Being able to ping the SAN from the client doesn't necessarily mean anything; the path and adapters that are able to communicate may not be the ones that carry the storage traffic.

    Is this an iSCSI SAN or fibre? If the former, check the initiator to make certain that it has logged back in to the target. Use the SAN management to see if the initiator has established a connection. If fibre, you should be able to use similar tools to check & verify connections on that medium.
    LVL 1

    Author Comment

    Hi It's a fiber connection but I have no idea how to mount it.
    iSCSI is not installed on the server.

    I will download the SAN tools and have a look.
    LVL 10

    Expert Comment

    Which fibre SAN? It's also possible that the problems on the switch (just one?) resulted in the loss of the zone config that allowed the two to communicate; need to review the switch config to be certain the zoning still exists.
    LVL 1

    Author Comment

    It's a HP Storageworks MSA 200, the switches are Brocade, not sure which model.
    I know nothing about either piece of hardware.

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