We have bought a HP tapestreamer library and are now able to make a full backup (instead of only partially with our older tapestreamer).
During the weekend we run a full backup and during the weekdays only differentials based on that full backup.
Last weekend the first full backup ran which seems to work fine, but at the end it stated unsuccesful. The mail send (with the joblog) stated: The job failed with the following error: Resources specified for snapshot do not have any valid data on them. Check if files were deleted or renamed
I do not understand this message. I know we have a VMware vSpere client running on our SBS2011 server that runs the Backup Exec 2012 software (without any agents) but I think this has nothing to do with the mentioned snapshot? I do not have selected a snapshot manually
Despite the message about the full backup not ran succesfully, I still can select files from that job in the restore tab.
Yesterday evening the first Differential job ran. I expected that only a small portion of data was written to tape, but instead the job took the same time as the full job and writing the same amount of data to the tape ending with a "not succesfull" job: In the joblog was written: The job failed with the following error: You cannot perform incremental and differential backups because Microsoft Exchange is configured for circular logging. To perform incremental or differential backups disable circular logging. Additionally, you cannot perform no-loss restores if you keep circular logging enabled.
Again, I have no clue what this circular logging means. I have looked for options to even select "circular logging" under Microsoft Information store, where I think there is some information about Microsoft Exchange, but no luck.
Is the differential backup not succesfull because the fullback wasn't?
Can somebody shed some ligh on these (for me at least) very cryptic error messages which fustrated me since they appear at the end of a 12 hour long backup job!