NetApp
Cluster : Configuration > Snapshot Policies : Managing Snapshot policies : Adding Snapshot policies
Adding Snapshot policies
You can add a Snapshot policy to specify the frequency and the maximum number of automatically created Snapshot copies.
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.
Click Add.
5.
Type the policy name and add one or more Snapshot schedules.
6.
Click Add.