Preventing Unmanaged Snapshots

You can prevent unmanaged snapshots from being created by being aware of existing snapshots when deleting or renaming protection schedules from a volume collection or when deleting or renaming the volume collection itself. If a protection schedule or volume collection is deleted or renamed, you should review and delete unmanaged snapshots if they are no longer required. Also, be careful if you disassociate or move volumes from one volume collection to another as doing so can generate unmanaged snapshots.