Considerations for upgrading controller hardware

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To plan for the upgrade, you should familiarize yourself with the general upgrade considerations. If necessary, contact technical support for recommendations and guidance specific to the configuration of your cluster.

Requirements and limitations

  • The procedure for upgrading by moving storage is disruptive. The procedure for upgrading by moving volumes is nondisruptive.

  • The new nodes must support the same software version as the original nodes.

  • You must observe the maximum cluster size.

    When you upgrade by moving volumes, new nodes are joined to the cluster before the original nodes are removed. Ensure the number of controllers in the cluster does not exceed the supported maximum cluster size during the procedure.

  • When combining different controller platform model in a cluster, you must follow storage platform mixing rules.

  • The new nodes must have enough storage to accommodate storage associated with the original nodes.

  • The root aggregate size and the number of disks supported by the new system must be equal to or greater than those supported by the original system.

    For root aggregate size requirements, see the NetApp Hardware Universe

  • The controllers in a HA pair must be two AFF models or two FAS models.

  • You can upgrade by moving volumes or physical storage from one FAS2xxx to a later FAS2xxx if the nodes are in the same cluster. For example, you can move volumes or physical storage from a FAS2552 to a FAS2750.

  • If you are upgrading a two-node MetroCluster configuration, see: Choosing an upgrade or refresh method

Systems with internal storage

Note The following systems have internal storage: FAS2220, FAS2240-2, FAS2240-4, FAS2520, FAS2552, FAS2554, FAS2620, FAS2650, FAS2720, FAS2750, AFF A200, AFF A220, AFF A700s, AFF A800, AFF A250.
  • If your system is not listed above, see the NetApp Hardware Universe to check if it has internal drives.

  • If you have a system with internal storage, the recommended upgrade method is upgrading by moving volumes.

  • If you have a system with internal storage, you can convert the system to a drive shelf and attach it to a new node in the same cluster. FAS2220 and FAS2520 controllers cannot be converted to a drive shelf.

    Converting a FAS2240 or FAS255x system to a drive shelf is an optional task in the workflow for upgrading by moving storage.

  • If you have a system with internal storage or a system with volumes or aggregates on internal SATA drives or SSDs, you can upgrade by transferring the internal storage to a drive shelf that is attached to the new node in the same cluster.

    Transferring the internal storage is an optional task in the workflow for upgrading by moving storage.

Situations where additional steps might be needed

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