The volume ComplianceClock is a time-based security feature for each volume. The volume ComplianceClock is used to determine the expiry date of WORM files and Snapshot copies in a SnapLock volume.
The volume ComplianceClock is initialized automatically during the creation of a new SnapLock volume. When a new SnapLock volume is created, the volume ComplianceClock gets its initial time from the system ComplianceClock time.
Since, each SnapLock volume maintains its own volume ComplianceClock value; therefore, a change in the ComplianceClock value of one volume does not affect the ComplianceClock of any other volume.
The volume ComplianceClock obtains its starting value from the system ComplianceClock time when a new volume is created. Therefore, a continuous association is maintained between the volume ComplianceClock and system ComplianceClock. This association minimizes the instances of ComplianceClock lag.