Home > Storage > PowerMax and VMAX > Data Protection > Dell EMC PowerMax and VMAX All Flash: Snapshot Policies > Manually terminating snapshots
The PowerMaxOS Q3 2020 release introduces options to terminate multiple snapshots simultaneously. System performance is not affected by snapshot termination because the back-end deltas are deallocated by a low-priority background task after the snapshots have been terminated.
The Bulk Terminate options allow the user to terminate a sequential range of snapshots from a single SG with the following options:
The Bulk Terminate options are not exclusive to policy snapshots and can be used on manual snapshots too. However, snapshots that are linked, in a restored state, or created by Cloud Mobility, are not terminated by the Bulk Terminate options.
Note: The Bulk Terminate options are intended to simplify deletion of multiple snapshots. The operations will terminate as many snapshots as possible even if some cannot be terminated. This behavior differs from standard snapshot snapshot-deletion and other snapshot operations which must be successful across the entire set of LUNs. After a Bulk Terminate operation completes, verify that all intended snapshots were successfully terminated.
The following figures show examples of the snapshot Bulk Terminate options.
In addition to the Bulk Terminate options, you can use Unisphere to manually select multiple snapshots of an SG and terminate them with a single operation.