Enterprise Vault (EV) agent based backup of EV data completes successfully without backing up EV databases and/or partition. Instead of reporting failure the job skips the SQL databases silently and completes successfully.
This issue comes up if EV service account does not have local admin permissions on SQL server or the server hosting the EV partitions.
This issue has been resolved via hotfix.
For Backup Exec 2010: TECH162860
For Backup Exec 2010 R2: TECH162839
For Backup Exec 2010 R3: TECH162830