10.(Optional) Configure the remaining snapshot schedule attributes as needed.
–To retain all snapshots that are created by the snapshot schedule indefinitely, clear the Retain each snapshot for check box.
–To define an expiration period for the snapshots that are created by the snapshot schedule in the future, select the Retain each snapshot for check box and specify the retention period for snapshots in minutes, hours, days, or weeks.
11.Click OK.
Changing the Snapshot Schedule Frequency
Change how often to create snapshots for a snapshot schedule.
1.Click the NAS Volumes tab on the left.
2.Click the All NAS Volumes tab on the top.
3.In the All NAS Volumes pane, click 
in the row of the volume whose snapshot schedule you want to modify.
4.Click View Details.
5.Click the Snapshots tab on the top.
6.In the Snapshots Scheduling pane, click 
in the row of the schedule you want to modify.
7.Click Modify.
The Modify Snapshots Scheduling dialog box appears.
8.In the Snapshot scheduling name field, type a name for the snapshot Schedule.
9.Specify when to create snapshots.
–To schedule snapshot creation every X minutes, select Take snapshot every and type the desired frequency in minutes.
–To schedule snapshot creation for a specific day and time, select Take snapshot on and select the day, hour and minute the snapshot should be created.
10.Click OK.
Changing the Retention Policy for a Snapshot Schedule
Specify whether to retain all snapshots that are created by a snapshot schedule, or configure the snapshots to expire after a certain period of time.
1.Click the NAS Volumes tab on the left.
2.Click the All NAS Volumes tab on the top.
3.In the All NAS Volumes pane, click 
in the row of the volume whose snapshot schedule you want to modify.
4.Click View Details.
5.Click the Snapshots tab on the top.
6.In the Snapshots Scheduling pane, click 
in the row of the schedule you want to modify.
7.Click Modify.
The Modify Snapshots Scheduling dialog box appears.
8.To retain all snapshots that are created by the snapshot schedule indefinitely, clear the Retain each snapshot for check box.
9.To define an expiration period for the snapshots that are created by the snapshot schedule in the future, select the Retain each snapshot for check box and specify the retention period for snapshots in minutes, hours, days, or weeks.
10.Click OK.
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