Hyper-V 2012R2 on Storage Spaces CSV, Ways to protect against "snapshot stun" during backups? RRS feed

  • Question

  • Upgraded to DPM 2016 this weekend.

    I have a client who uses DPM VM and guest level iSCSI connections to 3 QNAP 4 bay NAS units.

    Direct backups via the DPM agent into each VM work amazingly well.

    Host level DPM backups of entire VM guests as vhdxs has been problematic.

    Primary concern: snapshot stun during VHDX backups

    Secondary concerns:

    Location of checkpoint file same disk as currently running VM

    I don't have Pagefiles on separate vhdxs

    Is there a more ideal dpm storage layout "best practice" I should consider?

    Should I do away with qnaps and install the disks in a real server as local storage?

    Wednesday, May 23, 2018 6:59 PM

All replies

  • housekeeping - closing old post.

    A hyper-v checkpoint is needed for a backup to occur so the parent .vhdx files are not written to while the backup is in progress.   The checkpoint is then merged to the parent after the backup is complete.  

    You can adjust the checkpoint file location on the individual VM under settings HERE

    Mike Jacquet

    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.

    Monday, January 6, 2020 3:57 PM