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DPM places server intoSaved state backup RRS feed

  • Question

  • Hi , we have a windows server 2008r2 server which is placed into saved state during backup operations even though DPM reports it will use child partition snapshots.

    I have gone through the following but cannot find a condition as to why the server is being placed into saved state, is there any tools to run a check on the server to validate the configuration etc and check which method DPM will use to backup the guest.

    Conditions when DPM fails to back up Hyper-V virtual machines in an online state

    By default, System Center 2012 – Data Protection Manager (DPM) performs a backup of a Hyper-V Virtual Machine (VM) in an online state. However, DPM cannot back up a Hyper-V VM in an online state, if one or more of the following conditions are true:

    • Backup (Volume Snapshot) Integration Service is disabled or not installed.
    • The virtual machine has one or more dynamic disks.
    • The virtual machine has one or more non-NTFS based volumes.
    • The virtual machine Cluster Resource Group in a cluster setup is offline.
    • The virtual machine is not in a running state.
    • A ShadowStorage assignment of a volume inside the virtual machine is explicitly set to a different volume other than itself.
    • An App-V drive is installed on the virtual machine that creates a non-NTFS volume.

    These conditions are set by the Hyper-V writer. In such a case, the VM is put in a saved state before a snapshot of host volumes are taken (except when the VM is turned off) for a backup. The Hyper-V writer adds the VM in the following format:

    • For offline backups: Backup Using Saved State\<VMName>
    • For online backups: Backup Using Child Partition Snapshot\<VMName>
    noteNote
    During offline/online backups, the name of the data source remains unchanged even if the VM configuration changes to support online backups or for any further backups.

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    Wednesday, November 21, 2012 1:22 AM

Answers

  • Hi,

    At the time of original protection, that machine's caption from the hyper-V writer was it supported online backups, so that is what DPM is going to show because we never update it after it's been protected.  To troubleshoot, see if you can make shadow copies for every volume in the Guest.  If you cannot figure it out, you will need to work with the Windows Hyper-V folks to troubleshoot further.

    To list hyper-V writer captions for guests to see if online or saved state backups can be done:

    From an administrative command prompt:

    a. Type: copy con script.txt and press enter
    b. Type: list writers and press enter
    c. Press CTRL + Z (to save)
    d. Type: diskshadow /s script.txt | find /i "caption: backup using"

    Output will be displayed for each guest.


    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, November 21, 2012 10:46 PM

All replies

  • Hi,

    At the time of original protection, that machine's caption from the hyper-V writer was it supported online backups, so that is what DPM is going to show because we never update it after it's been protected.  To troubleshoot, see if you can make shadow copies for every volume in the Guest.  If you cannot figure it out, you will need to work with the Windows Hyper-V folks to troubleshoot further.

    To list hyper-V writer captions for guests to see if online or saved state backups can be done:

    From an administrative command prompt:

    a. Type: copy con script.txt and press enter
    b. Type: list writers and press enter
    c. Press CTRL + Z (to save)
    d. Type: diskshadow /s script.txt | find /i "caption: backup using"

    Output will be displayed for each guest.


    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, November 21, 2012 10:46 PM
  • thanks Mike, it seems like every backup run for this server does not put it into saved state. However it does sometimes, i assume there must be an application or another backup affecting it. So will continue to monitor
    Tuesday, November 27, 2012 11:10 PM