Cluster Service Interval
The cluster provides an auto-update mechanism that runs in the background as a background service which is responsible for updating local and remote cluster configurations and cluster health checks.
You can specify the cluster service interval in the Cluster Service Interval dialog box.
The interval (in seconds) specifies the sleep time between cluster background updates/operations. For example, if the specified value is 120 seconds, then every two minutes the cluster service will update its status and synchronize its cluster configuration with the other nodes (if changes identified).