Use "system controller replace" commands to upgrade controller hardware running ONTAP 9.5 to ONTAP 9.7
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During the procedure, you upgrade the original controller hardware with the replacement controller hardware, relocating the ownership of non-root aggregates. You migrate aggregates multiple times from node to node to ensure that at least one node is serving data from the aggregates throughout the upgrade procedure. You also migrate data logical interfaces (LIFs) and assign the network ports on the new controller to the interface groups as you proceed.
In this information, 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".
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 same name as "node1", and "node4" has the same name as "node2" after the controller hardware is upgraded.
Throughout this information, the term "systems with FlexArray Virtualization Software" refers to systems that belong to these new platforms. The term "V-Series system" refers to the separate hardware systems that can attach to storage arrays.
This procedure is complex and assumes that you have advanced ONTAP administration skills. You also should read and understand Guidelines for upgrading controllers with ARL and the Overview of the ARL upgrade before beginning the upgrade.
This procedure assumes that the replacement controller hardware is new and has not been used. The steps required to prepare used controllers with the
wipeconfigcommand are not included in this procedure. You must contact technical support if the replacement controller hardware was previously used, especially if the controllers were running Data ONTAP in 7-Mode.
You can use this procedure to upgrade the controller hardware in clusters with more than two nodes; however, you need to perform the procedure separately for each HA pair in the cluster.
This procedure applies to FAS systems, V-Series systems, AFF systems, and systems with FlexArray Virtualization Software. FAS systems released after ONTAP 9.5 can attach to storage arrays if the required license is installed. The existing V-Series systems are supported in ONTAP 9.5. For more information about the storage array and V-Series models, refer to References to link to the Hardware Universe and go to the V-Series Support Matrix.
Starting with ONTAP 9.6, this procedure applies to systems running 4-node MetroCluster configuration or higher. Because MetroCluster configuration sites can be at two physically different locations, the automated controller upgrade must be carried out individually at each MetroCluster site for an HA pair.
If you are upgrading from an AFF A320 system, you can use volume moves to upgrade controller hardware or contact technical support. If you are willing to do volume moves, refer to References to link to the Controller Hardware Upgrade Express Guide.