ESXi

 View Only

  • 1.  Cannot create a snapshot with 2TB virtual disk?

    Posted Sep 14, 2011 11:30 PM

    I have a virtual file server with a 2TB virtual disk (vmdk).  When I try to create a snapshot of the system (in order to back it up), I get the following error:

    File <unspecified filename> is larger than the maximum size supported by the datastore '<unspecified datastore>.

    The datastore which the file server is located on is formatted with VMFS 5.54 with 1MB block size.  It is a 12TB datastore with about 6TB free.



  • 2.  RE: Cannot create a snapshot with 2TB virtual disk?

    Posted Sep 15, 2011 12:28 AM

    This KB might help you;

    http://kb.vmware.com/kb/1012384

    I would consider using RDM's instead.

    Regards,

    Paul 



  • 3.  RE: Cannot create a snapshot with 2TB virtual disk?

    Posted Sep 15, 2011 06:31 PM

    Thanks for the info.  According to article, I cannot create snapshots of disks sized 2048GB-512bytes regardless of the VMFS version.  The largest disk I could create a snapshot of would be ~2032GB (2048GB - ~16GB snapshot overhead).  Is this correct?



  • 4.  RE: Cannot create a snapshot with 2TB virtual disk?

    Posted Sep 15, 2011 08:19 PM

    I suspect you are correct, unfortunately I cannot confirm in my test lab at this time.

    Regards,

    Paul



  • 5.  RE: Cannot create a snapshot with 2TB virtual disk?
    Best Answer

    Posted Sep 15, 2011 09:32 PM

    That's correct.  If you want to take a snapshot, then the maximum size is 2032 GB.   And that's the case even if you thin provision the disk.