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Considerations for single-node clusters

A single-node cluster is a special implementation of a cluster running on a stand-alone node. You can deploy a single-node cluster if your workload only requires a single node, but does not need nondisruptive operations.

For example, you could deploy a single-node cluster to provide data protection for a remote office. In this scenario, the single-node cluster would use SnapMirror and SnapVault to replicate the site's data to the primary data center.

In a single-node cluster, the HA mode is set to non_HA, which enables the node to use all of the nonvolatile memory (NVRAM) on the NVRAM card. In addition, single-node clusters do not use a cluster network, and you can use the cluster ports as data ports that can host data LIFs.

Single-node clusters are typically configured when the cluster is set up. However, you can also remove nodes from an existing cluster to create a single-node cluster.

The following features and operations are not supported for single-node clusters: