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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.

   To account for the use cases when you need to change the IP address because an incorrect IP address was assigned or you need to use a different IP address, the modify support is provided.

5. Type a name and select a network device for each node. Click NEXT.
6. Type values for Local Cluster IP address. Prefix Length, Gateway, VLAN ID, and Node <1 to N> address (where N is the number of nodes in the cluster). Click NEXT.

   | NOTE: In the case of an IP address change within the same VLAN If the node addresses are modified, you are not required to perform any additional change on the peer side. If the local cluster address is modified, you must modify the remote connection IP address on the peer side to reflect the change.

   | NOTE: In the case of a VLAN ID modification Modify the file control network on source. Modify the file control network on destination. Modify the remote connection on the source. Modify the remote connection on the destination.

7. Review the summary.
8. Do one of the following:
   - Click Run Now to perform the operation now.
   - Expand Run Now, 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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