About consistency checks options for an Exchange 2010 backup

By default, NetBackup is configured to run a consistency check on Exchange 2010 backups. The consistency check that runs on the snapshot determines if possible data corruption exists. For standalone servers, you must perform a consistency check. Consistency checks are optional for an Exchange 2010 Database Availability Group (DAG). You can configure this option in the host properties for the Exchange client.

If Perform consistency check before backup with Microsoft Volume Shadow Copy Service (VSS) is selected, NetBackup backs up Exchange objects as follows:

If you do not select Continue with backup if consistency check fails, a database backup fails if it contains database files or transaction log files that are corrupt. All other non-corrupt databases that you selected are backed up.
When you select Continue with backup if consistency check fails, then all Exchange data is backed up regardless if corrupt files are detected.