I provide support for serveral 2008sbs servers, one of which is failing to backup Exchange. When I look at the SBS Console it reports the backup completed successfully, but when I drill down further (Server Manager>Storage>Windows Server Backups) I see "completed with warnings". "Application will not be available for recovery from this backup". I also see exchange log files have not been flushed since this started. Looking back to mid December when this started, I noticed the backup was changed from 1x to 3x a day (a precaution due to a problem with the RAID that has since been resolved). Exchange email is working but logs are not purging. I am seeing a lot of post to disable circular logging, but this is already disabled.
I upgraded Exchange to sp3, and backups still fail. In the event viewer I get Event ID 565 "consistancy check for component 'long string of alphanumeric'\'microsoft exchange server\microsoft information store'server name' failed. Application Exchange' will not be available in the backup done at time "" Help!