Shadow Copy and DFS
Media Server Win2008R2 - BE2010R2 SP1
File Server being backed up - Win2K3R2
After a migration to our media server, we ran into issues in which the DFS data on our file server was not backing up properly. With the help of this forum, I was instructed to backup the Shadow Copy Components as opposed to the actual volume (https://www-secure.symantec.com/connect/forums/volume-does-not-back-after-migration).
Yesterday, I needed to restore some data for this server. The restore seemed to hang on multiple attemtps. Issue: http://www.symantec.com/business/support/index?page=content&id=TECH135096
I found that there was a hotfix released for this issue. So I installed Hotfix 150096 followed by Hotfix 144101 on the media server. This corrected the issues with restoring the data.
Now, this seems to have created a new problem. My backup jobs on this volume are failing. I have received several errors on several attempts. Error V-79-57344-33967 as well as V-79-57344-65078. In addition to the failed jobs, I have received the following error on my file server in the Sys logs. It appears that this error has been occuring occasionally during the backup window, however it does not always result in a failed job.
Event Type: Error
Event Source: VolSnap
Event Category: None
Event ID: 25
Date: 2/24/2011
Time: 9:27:53 AM
User: N/A
Computer: FILESERVER
Description:
The shadow copies of volume S: were deleted because the shadow copy storage could not grow in time. Consider reducing the IO load on the system or choose a shadow copy storage volume that is not being shadow copied.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 00 00 00 00 02 00 58 00 ......X.
0008: 00 00 00 00 19 00 06 c0 .......À
0010: 03 00 00 00 00 00 00 00 ........
0018: 67 00 00 00 00 00 00 00 g.......
0020: 00 00 00 00 00 00 00 00 ........
I updated RAWS on the file server, and attempted another incremental backup (using Archive bit). This job has been running for nearly an hour now. Even more peculiar is that is has backed up nearly 50GB. This can't be possible as there just aren't 50GB worth of changed files on this volume. Historically, we may see 2 to 10GB worth of incremental data on any given day. (example: yesterday we picked up about 5GB; no errors)
Is this a Microsoft error? Or do I possibly have my backup job misconfigured? Or is this a bad Hotfix?
On one hand, I can't wait 8 hours to restore 1 file... but on the other I need to backup my data successfully. I have been suspicious that my selections are wrong for this job. Here is what I have set up. Please point out any issues you see with the selections.
Shadow Copy Components\User?Data\Distributed File System Replication\DfsrReplicatedFolders\S \*.* /SUBDIR
Shadow Copy Components\User?Data\Distributed File System Replication\DfsrReplicatedFolders\S \assettags\*.* /SUBDIR /EXCLUDE
Shadow Copy Components\User?Data\Distributed File System Replication\DfsrReplicatedFolders\S \DfsrPrivate\*.* /SUBDIR /EXCLUDE
Shadow Copy Components\User?Data\Distributed File System Replication\DfsrReplicatedFolders\S \europedata\*.* /SUBDIR /EXCLUDE
Shadow Copy Components\User?Data\Distributed File System Replication\DfsrReplicatedFolders\S \RECYCLER\*.* /SUBDIR /EXCLUDE
Shadow Copy Components\User?Data\Distributed File System Replication\DfsrReplicatedFolders\S \System Volume Information\*.* /SUBDIR /EXCLUDE
Thanks,
David