Windows Server 2008 R2 backup fails due to lack of disk space.

precisenets
precisenets used Ask the Experts™
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See attached error report, I thought Windows Server Backup managed the space on the disk for us, deleting old backups?
Sls02BackupFailedDiskFull.JPG
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See the following article for the answer to your question:
https://blogs.technet.com/b/filecab/archive/2011/03/14/windows-server-backup-automatic-disk-usage-management.aspx

From the article:

Criteria:

This feature will not work if Windows Server Backup has reached the state where it cannot further contract the snapshot allocated space and also preserve some of the existing backups. This happens when space required to complete the backup causes the snapshot storage space to become less than 1/8 of the target size. You can change the snapshot storage from here: Volume ==> properties ==> shadow copies ==> settings.


If the Automatic Disk usage management criterions are not satisfied, you can still delete old backups created by Windows Server Backup. For the steps to do this, refer to the next section.

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Commented:
It looks like the problem was low space on the C drive not the target disk. Thank you for your reply.

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