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Title
Failed to back up DIT Database -
Description
When trying to backup a DC with RMAD, you receive the following error:
Failed to back up DIT Database
NTBACKUP is also unable to backup the System State. -
Cause
This can occur due to corruption with the AD structure on a single DC.
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Resolution
Follow the steps on this MS KB article to diagnose the problem:http://support.microsoft.com/kb/258062/en-us
N.B. Most issues with DIT database corruption occur on Step 12.
Once complete, you should be able to backup with RMAD. -
Additional Information
For more information on how to do a defrag/repair on the AD structure please see:
http://support.microsoft.com/kb/232122/