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DPM 2012 R2 Support and Hyper-V Workloads on REFS Storage RRS feed

  • Question

  • We have deployed all of our Virtual Machines on REFS filesystem. We are in the process of deploying DPM 2012 R2 and would like to know if there is any information available from Microsoft as to when REFS will be supported for Hyper-V workloads on REFS. Any information will help us plan for whether to move Hyper-V loads to NTFS.

    I can see the Windows Server 2003 is now supported in UR2 and wonder if there is a roadmap available that will be included in future UR for DPM 2012 R2.

    Also any information for re-enabling the integrity checking in VHDX after we move a VM from REFS to NTFS would be appreciated.

    Tuesday, May 13, 2014 8:55 PM

All replies

  • Hi,

    I do not believe we will be adding support for protecting Hyper-V hosted on REFS in the near term, so plan on using NTFS.

    If you are already using REFS and are getting backup failures, you can create the following registry key on the Protected Server, restart DPMRA service and run a consistency check.

    A. On protected server, browse to the registry path: HKLM\Software\Microsoft\Microsoft Data Protection Manager\Agent\2.0.
    B. Create a DWORD registry value called "ForceFixup" and set it to 0x1.
    C. Restart the DPMRA service on protected server.

    NOTE - This will disable use of DPM filter so there will be some backup and possible server performance tradeoffs.

     We do not announce fixes in upcoming UR releases.

    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. Regards, Mike J. [MSFT] This posting is provided "AS IS" with no warranties, and confers no rights.

    Wednesday, May 14, 2014 11:57 PM
    Moderator