Protecting Hyper-V 8 node cluster with DPM 2010 RRS feed

  • Question

  • We have a cluster 55 Hyper-V VMs running on 8 hosts in an Hyper-V failover cluster. We are using DPM 2010 to protect the VMs which are on 4 CSVs (4 LUNS on the same EMC CX4 SAN).

    The problem is that each time DPM launches the scheduled 'Express Full Backup', the failover cluster starts reporting the following errors:

    1) Cluster Shared Volume is no longer accessible from cluster node Cluster Shared Volume 'Volume1' ('Cluster Disk 1') is no longer accessible from this cluster node because of error 'ERROR_TIMEOUT(1460)'. which has caused VMs located on that CSV to shutdown.

    2) A backup application initiated a VSS snapshot on Cluster Shared Volume 'Volume1' ('Cluster Disk 1') without properly preparing the volume for snapshot. This snapshot may be invalid and the backup may not be usable for restore operations. Please contact your backup application vendor to verify compatibility with Cluster Shared Volumes.

    The cluster validation tool reports no errors/warnings, I've also added the registry entry to the DPM 2010 server to set the maximum number of parallel backups to 1.

    Any info will be appreciated.

    • Moved by MarcReynolds Tuesday, November 1, 2011 8:00 PM (From:Data Protection Manager)
    Tuesday, November 1, 2011 6:40 PM


  • If the above suggested answer does not help in resolving the thread please re-open it.
    Regards, Michael V [MSFT] - This posting is provided "AS IS" with no warranties, and confers no rights.
    Wednesday, January 25, 2012 10:15 PM

All replies