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# Change node (primary or backup)

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

## Prerequisites

The operation is not supported on a two node setup.

## 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 NAS SERVERS tab.
4. Select the NODES tab.
5. Click Change Primary Node or Change Backup Node.
6. Primary: Select the new primary node and select the network device for each of the file interfaces in the new primary node.
7. Backup: Select the new backup node and select the network device for each of the file interfaces in the new backup node.
8. Click OK.