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# Create or modify a file control network

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.

Only one file control network can be created for a system.

## Steps

1. Select a storage system that supports PowerMax File.
2. Select Data Protection > File Protection.
3. Select REPLICATION > FILE CONTROL NETWORK.
4. Click Create to create a file control network or select a file control network and click Modify.
5. Type a name, select a subnet, and select a network device for each node. Click NEXT.
6. Type values for Local Cluster IP address. Prefix length, Gateway, Node <1 to N> address (where N is the number of nodes in the cluster). Click NEXT.
7. Review the summary.
8. 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