An application snapshot is an application-consistent copy of an application instance taken at a specific point in time. Snapshots do not count towards an instance's provisioned storage.
You can temporarily revert the current instance of an instance to an older snapshot at any time without losing subsequent snapshots. You can then make the reversion permanent, which will remove subsequent local snapshots, but the DR snapshots will be retained.
The snapshot tree also displays the creation date of each snapshot and branch, as well as the size of each snapshot. You can view this tree in the Application Instance: Local Snapshots tab