Add more storage and show it to VMWare ESX 3.5 servers

Posted on 2008-11-17
Last Modified: 2013-11-14
I have a 3 VMWare hosts connected to an HP MSA 2012i iSCSI device.  It had 8 drives in it.  It works fine.
I added 4 more drives and configured them as RAID 5.  That worked okay, too.

Now, I want to present them to the VMWare servers.  I am not sure what the next step is.
Rescan does not show the added LUN.  I don't know if I am looking for new storage adapters to appear or get the unique LUN ID from the HP SAN.

Would someone point out the next couple of steps here?


Question by:wjolson
    LVL 23

    Expert Comment

    by:Malli Boppe
    LVL 8

    Accepted Solution


    Phase 1
    You would need to first map the LUN to each ESX server by assigning the same LUN ID number
    For example, VI3_13 > Mapped to all ESX servers as LUN ID #13
    In VI client (logged into VC), select ESX server > Configuration tab > Storage Adapters > Rescan...
    Once the scan has completed, your LUN ID (in this example # 13) should appear

    Phase 2
    The next step would be then to format that LUN as a VMFS volume
    Still in the Configuration tab > Storage > Add Storage... > Disk/LUN Storage Type > Select LUN (e.g. LUN 13) > Name the datastore (e.g. VI3_13) > Choose block size > Review and click Finish

    Repeat Phase 1 and 2 for each ESX server

    Now your new VMFS datastore is ready for use.

    Author Comment

    I did go back and map each new LUN (#2) to the existing ESX servers that are attached to the existing LUN (#1).  I even had VMWare support remote in and look at the HP storageworks box which was above and beyond what are required to do under our support agreement.  They did not have any suggestions other than contact HP.  They did not find any apparent errors in the configuration.  It simply seems to be the case that the SAN is not advertising or showing the new LUN.

    Unfortunately, I don't have any time to work on this problem.  Nonetheless, I did advance with the problem so I will accept your answer.


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