If you do not have snap-ins that use the cluster database, patch the servers in any sequence one at a time. See Patching the Avaya Breeze platform. If you have multiple servers in a cluster and have snap-ins that use the cluster database, you must patch the servers in the correct sequence to avoid customer impact. The sequence depends on the active, standby, or idle status of the server. Follow the sequence in this procedure to patch your servers.