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# Create or modify a snapshot of file system

Network-attached storage is a file-level storage architecture that makes stored data more accessible to networked devices.

## About this task

See Understanding PowerMax File for storage systems for an overview of PowerMax File.

## Steps

1. Select a storage system that supports PowerMax File.
2. Select Storage > File.
3. Select the FILE SYSTEMS tab.
4. Click VIEW ALL DETAILS.
5. Select the SNAPSHOTS tab.
6. Click CREATE to create a snapshot, or select a snapshot and click Modify to modify the properties of an existing snapshot.
7. Type a value for Name and Description.
8. Select a value for Service Level.
9. Optional: Select or clear the Date Reduction checkbox.
10. Select a local retention policy and a file snapshot access type.
11. Do one of the following:
    - Click Run In The Background to perform the operation in the background.
    - Expand Run in the Background and click Add to Job List to add this task to the job list, from which you can schedule or run the task at your convenience. For more information, see Schedule jobs and Preview jobs

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