Changing a disk from SCSI to MPIO, possible? RRS feed

  • Question

  • The disks allocated for backup is a SAN-disk attached with FibreChannel.

    The problem is that the disks isn't setup as MPIO-disks, thus the disktype within the storage pool is a SCSI-disk.

    When the MPIO-drivers are installed, it instead will becomes a MPIO-disk, and might be considered a "new disk".

    I have fixed this on the primary servers, but because the disks then were mapped from the hypervisor, the disktype wasn't changed from the guests point of view.

    How will DPM running on a physical server react on this modification?

    Will it find and accept all the volumes on the disk when the disk has changed from SCSI to MPIO?

    ED: I've looked att the PS migrationscript, but since that needs the original disk to be left intact that isn't an option..

    To clearify; this disk;


     will become this disk; 

    but of course it will be the same physical disk with the same content..


    • Edited by Ivarson Tuesday, March 20, 2012 3:24 PM
    Tuesday, March 20, 2012 2:47 PM


  • To answer my own question, YES it works without any hassle.

    After the new drivers was installed and server rebooted, the disk was identified as a MPIO-disk and its sequential number changed in storage management.

    DPM didn't seem to look at those values, it just taggled along.


    • Marked as answer by Ivarson Tuesday, March 20, 2012 10:36 PM
    Tuesday, March 20, 2012 10:36 PM