SnapVault uses the count field of the SnapVault schedule on the secondary storage system to determine the number of Snapshot copies that are retained.
When the maximum count of Snapshot copies to be retained is reached, the oldest retained Snapshot copies are deleted when new Snapshot copies are added. For SnapLock volumes, older WORM Snapshot copies cannot be deleted until their retention period has expired.
The WORM Snapshot copies are not deleted automatically. You must delete WORM Snapshot copies when they expire.