Place the cluster in Deny New Service state before you delete the cluster.
Procedure
In System Manager, click Elements > Avaya Breeze®.
In the navigation pane, click Cluster Administration.
On the Cluster Administration page, select the cluster or clusters that you want to delete.
Click Delete.
Click Continue when prompted.
When you delete a cluster, the Avaya Breeze® platform instances assigned to the cluster are automatically removed from the cluster. The services assigned to the cluster are automatically uninstalled from the servers of the cluster.