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# Handle NAS Cluster Nodes for Maintenance

Before performing maintenance on a NAS cluster node, you need to disable it — both from the cluster and from SMB or NFS services. After you have completed maintenance, you can re-enable SMB or NFS services on the node and re-join it to the NAS cluster.

Note: For a list of all the Appliance Controller commands, see the Command Index.

Disable the Node for Maintenance

1. Remove the node from the NAS cluster.

   The node must first leave the NAS cluster before it can be disabled. See Remove a Node from a NAS Cluster in this topic.

   Keep in mind that when a node leaves a NAS cluster, it can still receive communications from other nodes in the NAS cluster. However, the node cannot actively participate in the NAS cluster.

2. Disable SMB or NFS services on the node.

   Before disabling the node, you must disable SMB or NFS services, as appropriate. See Manage NAS Services.

3. Disable the node.

   After disabling SMB or NFS services on the node, you can disable it. Remember that you must disable the node from the NAS cluster's master node. See Disable a Node in this topic.

Re-Enable the Node

1. Re-enable the node.

   You must re-enable the node before it is eligible to rejoin the NAS cluster. See 1: Create a NAS Cluster in 1: Create a NAS Cluster.

2. Re-enable SMB or NFS services on the node.

   Before rejoining the node to the NAS cluster, re-enable its SMB or NFS services, as appropriate. See Manage NAS Services.

3. Rejoin the node to the NAS cluster.

   You can now rejoin the node to its NAS cluster. See 1: Create a NAS Cluster in 1: Create a NAS Cluster.

Remove and Disable Nodes
Remove a Node from a NAS Cluster

1. Log in to the Appliance Controller CLI.
2. Enter `nascluster leave [ip_addr]`.

   The parameter is:

   `[ip_addr]` | The IP address of the node being disabled. If you are entering this command from the node being disabled, you do not need to specify an IP address. If you are entering this command from the master node, you need to specify the IP address of the node to disable.

   Example:

   > nascluster leave 10.1.1.1

   NAS cluster leave applying settings ...

   Updating system NAS cluster configuration ...

   Resetting local auth config settings ...

   Applying local configuration settings ...

   Successfully left NAS cluster

Disable a Node

1. Log in to the Appliance Controller CLI from the master node.
2. Enter `nascluster disable node <ip_addr>`

   The parameter is:

   `<ip_addr>` | The IP address of the node being disabled.

6-68456-07_RevA | Initial publication date: Friday, December 22, 2017 | Last updated on Monday, January 12, 2026.

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