A cluster node is a (n) _________.

An admin node is not a standard NetApp cluster term - cluster management is distributed across nodes rather than handled by a dedicated admin node.

'Cluster verver' is a misspelling and refers to a cluster-level Storage Virtual Machine (SVM), not a node - it is a logical construct, not a physical member.

An HA storage controller pair describes two nodes configured for high availability together, not a single cluster node.

A cluster node is a single storage controller - a physical or virtual hardware unit running ONTAP that contributes resources such as CPU, memory, and disk shelves to the cluster. Multiple storage controllers join together to form a cluster, each operating as an independent node. Nodes can be paired into HA pairs for failover, but each individual controller is itself the node.