Decide whether to upgrade by moving volumes or storage

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This content describes how to upgrade controller hardware of an AFF system or a FAS system in a cluster by moving storage or volumes.

Use this procedure if you want to upgrade controller hardware in the following situations:

Note The hardware upgrade procedures have been simplified in ONTAP 9.8 with the introduction of the automatic port placement feature.
  • Your original and new nodes are compatible and supported.

  • You are upgrading a pair of nodes running ONTAP 9.0 or later to a new pair of nodes running the same release.

  • You are reusing the IP addresses, network masks, and gateways of the original nodes on the new nodes.

  • You plan to upgrade controller hardware by moving storage or moving volumes.

  • You are prepared to perform a disruptive procedure if you are upgrading by moving storage.

    Upgrading by moving volumes is nondisruptive.

  • You plan to convert a node of a supported model to a disk shelf, and then attach it to the new nodes.

If you are upgrading a two-node MetroCluster configuration, you must use the procedure in the MetroCluster® Upgrade and Expansion content.

This content does not describe how to use aggregate relocation (ARL) to upgrade controller hardware, which is described in the ARL controller hardware upgrade content.

If you are replacing an individual component, see the field-replaceable unit (FRU) flyer for that component.


In the steps for upgrading controller hardware by moving storage, the original nodes are called node1 and node2, and the new nodes are called node3 and node4. During the described procedure, node1 is replaced by node3, and node2 is replaced by node4.

original to new nodes

The terms node1, node2, node3, and node4 are used only to distinguish between the original and new nodes. When following the procedure, you must substitute the real names of your original and new nodes. However, in reality, the names of the nodes do not change: node3 has the name node1, and node4 has the name node2 after the controller hardware is upgraded.

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