XADM: Full Online Backup Must Be Done After a Defrag or Repair (183380)
The information in this article applies to:
- Microsoft Exchange Server 4.0
- Microsoft Exchange Server 5.0
- Microsoft Exchange Server 5.5
This article was previously published under Q183380 SUMMARY
After a Microsoft Exchange database is defragmented or repaired off-line
(by running the Edbutil or Eseutil utilities), a full online backup must
be performed as soon as possible.
If the backup is not done, it could severely impact the ability to recover
from a disaster that occurs after the off-line defragmentation or repair
was done.
MORE INFORMATION
When the databases are defragmented or repaired, they get a new log
signature. As a result, any logs generated after the defragmentation (or
repair) process will be incompatible with the databases just as they were
before the defragmentation or repair process. Therefore, if a disaster
occurs and you need to restore before the next full online backup has been
performed, you will not be able to recover data generated after the
defragmentation (or repair) because the logs have a different signature.
For this reason, it is very important that you perform a full online backup
immediately after you do a defragmentation (or repair) of the database.
| Modification Type: | Minor | Last Reviewed: | 4/28/2005 |
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| Keywords: | kbinfo KB183380 |
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