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Recovery from tape RRS feed

  • Question

  • Hi

    I am new to DPM, and I am currently looking at a customers DPM 2010 installation, and need to clarify some things :-)

    I can see that it uses recovery points and tape backups. I assume the recovery points are daily scheduled backup jobs and when the tape backup job is run later it collects all the data from the recovery points, is this correct?
    Or are the recovery points actually folders on the source server, which then are transfered to DPM for tape backup?

    Can't see if it's full backup, incremental or something else?

    Hopefully someone can help? :-)


    /Lasse


    • Edited by LasseF Thursday, October 10, 2013 11:15 AM
    Thursday, October 10, 2013 11:13 AM

All replies

  • Hi,

    Yes, Disk to Disk to Tape protection is accomplished by DPM in the following manner.

    1) You protect a data source (Volume/share, SQL DB, Exchange DB, SharePoint farm) using short term disk  and long term tape protection. 

    2) DPM allocates disk space from the DPM storage pool to maintain the disk based backups for the retention period defined.

    3) DPM does it's disk based synchronizations / express full backups at specified times and creates recovery points (shadow copies) on the DPM Server.

    4) When it's time for a long term tape backup, DPM mounts the latest disk based recovery point (shadow copy) and copies it to tape, and that recovery point time will be that of the disk based recovery point time since it's identical data.

    Recovery options will be either from disk or tape, based on the retention range and time selected from the calendar.


    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.


    Friday, October 11, 2013 6:40 PM
    Moderator
  • Hi Mike

    Thanks for the reply and clarification :-)

    When doing the long term backup to tape, is there a max time since the last recovery point, so if it's been to long, the backup to tape will fail with "DPM could not find a valid recovery point on disk. (ID 30126)"?

    Lasse


    /Lasse

    Monday, October 14, 2013 6:45 AM
  • Hi,

    Each long term backup to tape job needs to copy the "latest" disk based recovery point, so that means if you don't have a new disk based recovery point made since the last successful tape backup, you will get the error  "DPM could not find a valid recovery point on disk. (ID 30126)"

    This prevents DPM from copying the same recovery point on disk to tape over and over if no new disk based recovery points are being made.  You need to fix whatever is wrong that is preventing new disk based recovery points from being created.


    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, October 14, 2013 2:38 PM
    Moderator