Exchange 2007 backup speed has slowed down
Hi, we're running Backup Exec 2010 R3 SP2 which has been backing up our Exchange 2007 SP2 server to tape via a backup policy we created many months ago.
The Exchange backup speed was fine - averaging almost 3000MB/min - until 16th July when it dramatically slowed down to a rate averaging 550MB/min. As a result, our Exchange backups have gone from taking approximately 6 hours to now 25 hours.
We have not modified the Exchange backup policy, job template or selection list settings.
We have not introduced, upgraded or changed the configuration of the anti-virus software on either the Exchange or Backup Exec servers.
We have not applied any hotfixes or service-packs to the Windows OS on either the backup exec or Exchange servers apart from the standard security and critical updates from Microsoft.
We have not applied any hotfixes or service-packs to the Exchange 2007 application since November last year when we applied SP2 to Exchange.
We applied SP2 to Backup Exec just last week to see whether this would improve or correct the issue, however this made no difference.
The Exchange server seems to be performing well otherwise, users are not complaining about slowness.
We backup several other servers regularily and none of them have slowed down in their backup performance.
A few months back we did a restore from an Exchange backup via mounting a Recovery Storage Group, but this SG has since been dismounted even though it still exists.
I am at a complete loss to understand why the Exchane backups have slowed down so dramatically.