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SBS 2008 backup failure

Posted on 2013-01-16
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Last Modified: 2013-01-28
Backups have been successful for many months, but the last 10 days have failed. I checked the event viewer (screenshot attached) but no way to tell why. I can see the drive in disk management (although it has no drive letter, so I assume Windows Backup formats the drive).

We rotate external USB drives, and the ones I've tried so far have the same result. Is there a detailed list of troubleshooting items to check? What do I check next to solve this?

Looking at the early failures, I see "Backup target is running low on free space". I'm thinking I have some huge log files somewhere and need to determine how to clear them.

 Screenshot of event viewer
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Question by:silentreproach
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Assisted Solution

by:Sushil Sonawane
Sushil Sonawane earned 250 total points
ID: 38784363
Make sure free space available on the backup store hard dirve.

Ran the command vssadmin list writers and check if any writers are failed ??

Make sure your ntfs.sys, volsnap.sys files and windows latest updates and service pack are updated on the  server.

Tried to backup on the physical hard drive check backup failed or not??
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Author Comment

by:silentreproach
ID: 38784646
How do I tell if there is enough free space on the backup drive? It does not appear as a normal Windows volume nor does it have a drive letter.

I ran vssadmin list writers and all had no errors.

I'll check to see if enough space to backup on the physical hard drive, or not.
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Author Comment

by:silentreproach
ID: 38794212
It looks like the solution was to trim some .log files. I used the SBS2008DiskCln.cmd command file found here: http://www.sbsfaq.com/?p=1598. I also trimmed the console.log file per this thread on technet.

This seemed to free up a couple GB so that the backup would finish, providing me with a short term fix. I still need more specific and detailed info on best practices for cleaning up temp files and shrinking log files on SBS 2008. Recommendations?
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Assisted Solution

by:silentreproach
silentreproach earned 0 total points
ID: 38807054
Thanks Sushil, your comments have helped somewhat.

The backup succeeded once, but now is failing again. The server no longer wants to recognize the external USB hard drives. Some of the things I tried were:

1. Disconnected the external USB drive. Shut down/power off the server. Power up the server, and when fully restarted, reconnected the drive. Server did not detect it.

2. This lengthy thread shows lots of people have the problem, but no great solutions:

http://social.technet.microsoft.com/Forums/en-US/windowsbackup/thread/d9660cd6-9b98-4cf1-a1c8-b3fc1c156785?prof=required
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Accepted Solution

by:
silentreproach earned 0 total points
ID: 38807633
3. I also tried this Microsoft hotfix:

http://support.microsoft.com/kb/975163

4. I tried  the "workaround" listed in the hotfix - disable/enable the USB controller in the Device Manager.

5. Went into Control Panel to check the Power Options.  The USB selective suspend setting was already set to "disabled". But, I enabled and then disabled it again anyways.

The drive came back online! The "safely remove hardware" icon now appears in the system tray and I can see the drive in disk management again. Got a good backup last night.
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Author Closing Comment

by:silentreproach
ID: 38826117
(Reason for accepting my own comment as the solution: Only 1 other comment was offered and it was helpful, but did not resolve my problem. My comments provided the solution and I want to be sure other people see it, for their benefit).
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