NetApp
Cluster : Configuration > Snapshot Policies : Managing Snapshot policies : Editing Snapshot policies
Editing Snapshot policies
You can make changes to a previously created Snapshot policy if you want to modify its schedule or the maximum number of Snapshot copies that are created.
Steps 
1.
From the Home tab, double-click the appropriate storage system.
2.
Ensure that the left navigation pane displays the cluster hierarchy.
3.
Click Configuration > Snapshot Policies.
4.
Select the Snapshot policy and click Edit.
5.
In the Edit Snapshot Policy dialog box, make the necessary changes.
6.
Click OK.
7.
Verify the changes you made to the selected Snapshot policy.