none
Recover DeDuped Recovery Points RRS feed

  • Question

  • After sorting out an incredible mess Storage Spaces seems to be well known for when a physical drive takes a crap I am now in what almost feels like deeper doo doo!!  I’ve been using DPM  2012 R2 Version 4.2.1254.0 for quite some time.  The Server with the Storage Spaces mess is a 2012 R2 OS as well.  To add to the fun I had had dedupe turned on the Server being backed up.  The DPM Server seems to have all the backups which would be 3 recovery points per day with 5 days retention and no tapes.  I am able to do the Recovery both to "original location" and to Network Location.  However, as YOU would know "original location" produces an error about missing volume: \\ ?\Volume{6460399a-ef18-4e02-90a5db1ebaf20962}\  .  So I tried to restore it to the Network Location and use the "missing or crashed" volume that has been deleted and recreated/rebuilt in Storage Spaces.  I get a conglomeration of folders which looks like the info needs to "restore or rehydrate" the deduped data but I’ll be switched if I can get it to work.  I’ve attached a screenshot of the file structure DPM Recovery puts on the recreated volume V:\  on Destination Server if that might be of any help.

    Storage Spaces, Deduplication, DPM:  am I NUTS??!!!  What happened to the old days .bkf???  Any help, articles or direction to head to would sure be appreciated……..   The bottom line here is the recovery points all contain 465 +/-Gb in size which is correct, however, when DPM lays it back out either in the newly created Volume on the original Server OR another location it is conglomeration of files that appear to need hydration.       

                                      

    Thursday, July 30, 2015 4:36 PM

All replies

  • Hi,

    If you reformatted the destination and disabled dedupe on the destination volume, then chose to recover the entire volume (don't deselect anything under the volume) - then DPM will restore the entire volume in a deduped state. Once complete the files not under the "system Volume Information" folder should be able to be opened and read like normal.


    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.

    Thursday, July 30, 2015 7:15 PM
    Moderator
  • Mike, THANKS for the answer.  I made possibly a huge mistake identifying the Servers. The OS on the DPM Server is 2012 Std NOT R2 as I originally stated although DPM Version IS DPM 2012 R2 Version 4.2.1254.0 as stated. The PS is 2012R2 and it had DeDupe role enabled as the Storage Spaces were not the only drives. So it remained with that role and even though I "recreated" the V: Volume in Storage Spaces just like it had been before with thin provisioning I got what you see in the screenshot when DPM Recovered it.  As you know when I tried to recover it to a Network share on a 2012 R2 Server WITHOUT the DeDupe role installed I got the error message that it couldn't do the recovery there as the recipient Server was not DeDupe aware.  Since the original Server still was due to the other drives in it I was able to do the Recovery but you can see the conglomeration of files and folders all under "System Volume Information" folder.  It goes down to DeDupe-->ChunkStore--> and you can see from there.  To ME the uneducated it looks like "raw" DeDupe information that hasn't been "rehydrated".  As also can be seen from the screenshot there are NO folders or files other that "Recycle Bin" and "System Volume Information".  It also is once again a volume built with Storage Spaces.  The real weird part IS there is another volume that came back when I when through Storage Spaces hell built from the same 4 HDDs JBODs that this V: Volume was on but just wouldn't "come back".  I guess I COULD stick a 4Tb drive in the box and just initialize it, format it, and try to Recover to IT if you think that might be the right thing to do.  Just hate the workarounds and so on and would like to know what the heck is going on....... THANKS again for your help
    Thursday, July 30, 2015 11:53 PM
  • Mike, I don't know how or why the system added a 69 to my username below your answer but it  did; it is still me! I am wondering if there are any articles or anything or anybody that might steer me in a direction to figure out what is going on. I really don't want to "waste" a 4Tb drive by doing what I suggested below and I suppose I could try to remove one of the drives from Storage Spaces and try to get it to "rebuild" itself on the remaining 3 drives for the Volume B: that DID come back from this whole mess. I did NOT need to do a DPM Recovery for it it simply came back after "rebuilding" the Storage Space. There MUST be something to make DPM Recover this in it's entirety. Like I said IF I try to recover to a system without DeDupe role installed I get the warning it can't be done. After 3 times restoring it to this location I always get this weird collection of folders/files. Anything at all left in your bag of many tricks??
    Friday, July 31, 2015 2:00 PM
  • Hi,

    Just FYI - We introduced a fix in DPM 2012 R2 UR5 for customers like yourself running down level operating systems on DPM sever (Windows 2012) and protecting a Windows 2012 R2 dedup volume.  Under that configuration DPM will not protect the file server in an optimized (deduped) state since Windows 2012 cannot read Windows 2012 R2 dedup volumes.   So all backup and recoveries for Windows 2012 R2 dedup volumes should be unoptimized if the DPM 2012 R2 server is on Windows 2012 and has UR5 installed.


    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, July 31, 2015 6:09 PM
    Moderator
  • Mike, THANKS, and sorry I didn't give the right info the first time.  At the time of installing DPM 2012R2 I believe you could not yet install it on Server 2012 R2, thus, I used Std. OR something along those lines.  Bottom line, I hate to sound like a dummy but are you telling me to simply install the Rollup and things will straighten themselves out on the Recovery OR am I screwed since the current backups are all FROM the DeDuped Server 2012R2??? 

    In the past of course any upgrades on the DPM Server needed most of the time manual upgrades of the agents.  Can I install the Rollup UR5 on DPM, make sure all the agents upgraded and THEN do the Recovery???  OR am I screwed because of the condition of the backups OR there is some other magic you know about??

    Friday, July 31, 2015 7:57 PM
  • Hi,

    UR5 is more preventative than anything else, it allows for backups and restores to be done in un-optimized fashion. However even in your configuration restoring in optimized (whole volume) should work, so I'm at a loss why only the system volume information folder is all that is restored - that won't be useful without the actual files also being restored.   So if you need to get real data recovered I suggest opening up a support ticket so the incomplete restore can be investigated fully.


    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.

    Saturday, August 1, 2015 1:09 AM
    Moderator
  • Mike, THANKS for this and THANK for all you do in this forum; I've talked to you about other Twilight Zone episodes I seem to have on a regular basis!! I'm going to try to restore to a fresh formatted 4Tb drive WITHOUT Storage Spaces and WITHOUT DeDupe of course I'll probably get the message about non-DeDupe aware volume. I will probably even try the manual Restore methodology witch has really scanty amounts of "how-to" information on it as well(not well documented or at least 2yrs. ago when I tried it). The size of the Backup on DPM is correct at around 465Gb so its gotta work somehow. You can see many files under the Data folder in the screenshot they are just not being put back together. There are just too many "new" technologies at play here with Storage Spaces being the worst culprit and then I was bold enough to go for "thin provisioning" as well!!

    I'm assuming you were talking about a $295 an hour support ticket which isn't going to happen in my small company!! THANKS again for everything!!

    Saturday, August 1, 2015 2:07 PM
  • Ok,  so make sure the destination server is Windows 2012 R2 and you have the dedup feature installed but not enabled on the destination volume you intend to restore to.  Hopefully that will be successful because as you said the size of the recovery points are correct, so it should restore it entirely.

    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, August 3, 2015 1:28 PM
    Moderator