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Recovery Point Issue RRS feed

  • Question

  • We currently use DPM 2012 to backup VMs and BMRs on 3 different Hyper V hosts. 2 of these hosts are running 2008 and one is running 2008 R2. At some point in the past, it appears that the Recovery Points that DPM was taking weekly on the two older Hyper V hosts are incorrect. If you restore or look at the files in the backup they are showing a date that matches the last consistency check, not the date of the actual recovery point. However, the host running 2008 R2 doesn't have this issue. To mitigate the problem I have to run consistency checks weekly on all of those VMs which is time consuming. Any help on this one would be greatly appreciated.
    Monday, September 30, 2013 2:47 PM

All replies

  • Hi,

    Any changes made to the servers since the issue started ?

    Some Anti-virus filter drivers have been known to interfere with DPM filter driver that tracks block level change tracking.  If normal recovery points are not showing data transferred (Data Transferred only show 0.13 MB) then that is suspect. 

    Since there are no errors associated with this problem, and the only visual indication is lack of data being transferred during synchronization / express full jobs for that data source, there is no easy way to discover this problem in the DPM Console unless you looking at data transferred on a regular basis. However, you can proactively discover this condition if you use a DPM power shell command to run a manual recovery point with integrity check. This job will perform a normal synchronization, followed by an integrity check to ensure data on protected server and data on DPM replica match block for block. If it finds any mismatch, it fixes the replica for the same and it raises the alert that corruption has been detected.


    To run a synchronization with integrity check see the following TechNet article:

    New-RecoveryPoint with Integritycheck
    http://technet.microsoft.com/en-us/library/cc627335.aspx



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    Tuesday, October 1, 2013 8:44 PM
    Moderator