Can the integrity check be skipped for fast recovery snaps?
For full backups, where transaction log files are truncated, database integrity must be verified prior to calling BackupComplete. For copy backups that are taken between full backups where transaction log files are not truncated, integrity checks may be skipped. By skipping the integrity check, the VSS Provider postpones identifying any possible database corruption until the next full backup. If a database is recovered from a corrupted backup, you will need to go through the process of a full database recovery starting from the most recent full backup to bring the database back to a healthy state.