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DPM 2012 - Long Term with co-colocation fail!....Short term Done! where is the problem? RRS feed

  • Question

  • Please help me!!...

    please help.

    I have a job that has the following characteristics:

    Monday through Friday is performed short-term backup retention 1 week. This is working very well.

    Saturdays full backup is performed with retention one week must leave library. 15 days later you can re-enter these tapes and could erase information.

    and the first Saturday of each month full backup is performed with retention of 60 months in and out of library.

    The backups do not work long-term. The error message is:

    "DPM Could not reserve the drive resource Because one of required drive resources is not online or it needs cleaning or servicing. (ID 24052)" but the library is good, there backups are performed short-term without problems.

    already installed the rollup 2.

    This job is configured  co-colocation. 


    Wednesday, September 26, 2012 8:04 PM

Answers

  • Hi,

    Duplicate of http://social.technet.microsoft.com/Forums/en-US/dpmtapebackuprecovery/thread/7c0829f3-e246-411d-8c56-2050c49ac668

    You need to have two working tape drives in order for long term tapebackups to succeeed if you are also doing short term tape backups. 

    When you have both Short term protection and Long term protection configured to backup to tape,DPM will use short term backup jobs to make a FULL back up of the data from the protected server to tape. When it comes time to run the long term backup to tape,DPM will use the last full short term backup tape to make a COPY to another tape for long term protection.DPM will never try to backup data from the protected server for any long term backup jobs when you have short term protection configured, that is by design. If you have short term protection configured to backup to disk, the long term protection to tape will create a snapshot of the local DPM replica and backup to tape. In summary long term protection to tape will always make a copy of your short term protection media, either the short term tape media, or the short term replica volume media.

    The problem may come when the DPM server is using a single standalone tapedrive, or a tape library that is capable of having more than one tapedrive but only has a single (operational) tape drive in the library. Under this condition DPM can't perform the tape copy from the last full short term backup tape media to the new long term backup tape media because you need two functional tape drives to perform the tape to
    tape copy.


    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, September 26, 2012 9:59 PM
    Moderator

All replies

  • Wednesday, September 26, 2012 8:06 PM
  • Wednesday, September 26, 2012 8:07 PM
  • Hi,

    Duplicate of http://social.technet.microsoft.com/Forums/en-US/dpmtapebackuprecovery/thread/7c0829f3-e246-411d-8c56-2050c49ac668

    You need to have two working tape drives in order for long term tapebackups to succeeed if you are also doing short term tape backups. 

    When you have both Short term protection and Long term protection configured to backup to tape,DPM will use short term backup jobs to make a FULL back up of the data from the protected server to tape. When it comes time to run the long term backup to tape,DPM will use the last full short term backup tape to make a COPY to another tape for long term protection.DPM will never try to backup data from the protected server for any long term backup jobs when you have short term protection configured, that is by design. If you have short term protection configured to backup to disk, the long term protection to tape will create a snapshot of the local DPM replica and backup to tape. In summary long term protection to tape will always make a copy of your short term protection media, either the short term tape media, or the short term replica volume media.

    The problem may come when the DPM server is using a single standalone tapedrive, or a tape library that is capable of having more than one tapedrive but only has a single (operational) tape drive in the library. Under this condition DPM can't perform the tape copy from the last full short term backup tape media to the new long term backup tape media because you need two functional tape drives to perform the tape to
    tape copy.


    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, September 26, 2012 9:59 PM
    Moderator