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  • 1.  error trying to create RDM

    Posted Jul 29, 2013 08:49 PM

    hi there,

    I'm trying to create an RDM for a backup tape drive however I'm getting the below errors? Any idea what the problem may be?

    I have also attached a putty log with a bit more info.The datastore says is supports files up to 2tb.

    Cheers for any help with this!

    -Al

    /vmfs/volumes/51eb1c44-1a2d6318-c3c0-74867aceae52/RDMs # vmkfstools -z /vmfs/devices/disks/

    vml.010000000031303233446374138524431303030 RDX.vmdk -a lsilogic

    Failed to create virtual disk: The specified device is not a valid physical disk device (20                                                                        ).

    /vmfs/volumes/51eb1c44-1a2d6318-c3c0-74867aceae52/RDMs # vmkfstools -r /vmfs/devices/disks/

    vml.010000000031303233446374138524431303030 RDX.vmdk -a lsilogic

    Failed to create virtual disk: The destination file system does not support large files (12                         

    ).



  • 2.  RE: error trying to create RDM

    Posted Jul 29, 2013 11:44 PM

    There are two RDM modes as you aware of:

    Virtual compatability mode provides vSphere snapshots of this virtual disk.

    Physical compatability mode allows the VM to pass SCSI commands direct to the storage system LUN. This allows it to leverage SAN specific features such as interation with the SANs own snapshot functions.

    Also try unpresent and representing the LUN's . That should isolate the LUN id issues



  • 3.  RE: error trying to create RDM

    Posted Jul 30, 2013 01:11 PM

    thanks. problem was no cartridge inserted (doh!)