If you need to temporarily stop pruning operations or unmount operations, then you can disable the automatic cleanup of snapshots in the storage array.
Procedure
- 
From the navigation pane, click Manage > Infrastructure.
The Infrastructure page appears.
 - 
Click Arrays.
 - 
On the Arrays page, in the Name column, click the storage array.
The Overview page of the array appears.
 - 
In the Configuration tab, under Activity tile, move the Disable automatic cleanup (Pruning and unmount snapshots) toggle key to the right.