Navigate to Administrative Tools | Settings | Cluster | Cluster Management.
The Cluster Management page is divided into left and right panes. If you do not see the right pane, click an appliance node in the left pane.
The "health" indicators on the nodes and in the upper right corner of this pane provide a quick view as to whether cluster members are in an error, warning, or healthy state.
The left pane displays a graphical representation of the primary and replica appliances belonging to the cluster.
Appliance details and cluster health pane: The right pane displays details about the appliance selected in the left pane. From this pane you can run maintenance and diagnostic tasks against the selected appliance.
A warning count identifies a potential issue with the cluster. An error count indicates a definite problem impacting the functionality of the cluster.
Expand the View More section to see more details on the selected appliance. Clicking a member of the cluster in this pane displays details about the appliance and the health of the cluster member.