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Windows Server Backup disk size issue

    Question

  • Hi There

    I was wondering if someone could please help me with an issue we are having with Windows Server Backup on Windows Server 2008 Standard.

    We have a 500GB disk attached and select that when running the scheduled backup wizard, after clicking finish it formats the drive and then pops up an error stating: "Volumes have to be smaller than 2 TB minus (-) 4 GB to be protected."

    Does anyone know why this would be happening? I have tried multiple drives of different sizes (320GB, 500GB and 750GB), certainly none over 2TB. The funny thing is that this customer has 4 other Windows Server 2008 servers running Windows Server Backup without any issues and the same setup.

    The event viewer does not show any errors at all.

    Any help would be much appreciated.

    Regards
    Travis
    Tuesday, October 21, 2008 6:59 AM

Answers

  • Hi Travis,

     

    According the description, the error is unexpected.

     

    Did you try different disks of the size that you mentioned above (320GB, 500GB and 750GB)? Or do you create a volume of such size and trying to schedule backup to the disk whose total size is (2TB-4GB)?

     

    To further research on the issue, could you please try to reproduce the issue and then send across all the ETL files under %windir%\logs\WindowsServerBackup to tfwst@microsoft.com? Please also specify the build details for the Windows Server 2008 OS build.

     

    Thank for the co-operation.


    David Shen - MSFT
    • Marked as answer by David Shen Tuesday, October 28, 2008 2:32 AM
    Thursday, October 23, 2008 8:09 AM
  • Hi David

    Thanks for your reply. I ended up calling MS support about this one, and discovered it is actually complaining about the source drive. They really need to work on their error messages. Even though the error came up when it was formatting the destination drive, it actually means the the source drive needs to be 2TB or smaller, where my source drive is a 3.5TB volume. Seems to me that Windows Server Backup does not support GPT disks.

    Regards
    Travis
    • Marked as answer by David Shen Wednesday, October 29, 2008 2:14 AM
    Tuesday, October 28, 2008 3:55 AM

All replies

  • Hi Travis,

     

    According the description, the error is unexpected.

     

    Did you try different disks of the size that you mentioned above (320GB, 500GB and 750GB)? Or do you create a volume of such size and trying to schedule backup to the disk whose total size is (2TB-4GB)?

     

    To further research on the issue, could you please try to reproduce the issue and then send across all the ETL files under %windir%\logs\WindowsServerBackup to tfwst@microsoft.com? Please also specify the build details for the Windows Server 2008 OS build.

     

    Thank for the co-operation.


    David Shen - MSFT
    • Marked as answer by David Shen Tuesday, October 28, 2008 2:32 AM
    Thursday, October 23, 2008 8:09 AM
  • Hi David

    Thanks for your reply. I ended up calling MS support about this one, and discovered it is actually complaining about the source drive. They really need to work on their error messages. Even though the error came up when it was formatting the destination drive, it actually means the the source drive needs to be 2TB or smaller, where my source drive is a 3.5TB volume. Seems to me that Windows Server Backup does not support GPT disks.

    Regards
    Travis
    • Marked as answer by David Shen Wednesday, October 29, 2008 2:14 AM
    Tuesday, October 28, 2008 3:55 AM
  • Hi Travis,

    In my research in Windows Server backup so that I could backup my home server, i discovered that the OS wants to take over the whole volume. I was hoping I could use a 200GB sata drive and partition it so that part could be used for the backups and for VM images. The backup utility wanted to use the whole disk drive, and would erase any partitions or data if I had continued to use it.  It appears that Windows Server 2008 will use the entire disk for backups.

    I don't know about support for GPT disks, but it could possibly support LUN's on Fiber Channel or iSCSI that are 2TB minus 4GB, even if the entire storage array is larger than 2TB. I don't have any large SAN's to test with, so that part is just a theory.
    • Edited by Brad Anger Wednesday, November 12, 2008 4:53 PM
    Wednesday, November 12, 2008 4:52 PM