List the sites that you previously defined on the Sites Web page.
Assign an application server to a site.
Change the topology by adding or deleting application servers.
Configure the storage server role as primary or backup.
You must define topology properties on the storage server, which then applies these properties to the associated application servers.
In a single-server topology, you can manage application and storage roles on the same server.
In a front-end or back-end topology, you can manage all application roles on the server that has been assigned the storage role. The location of the application servers, relative to the storage server, can be local or remote.
If you configure a server to be an application-only server, the navigation pane displays a subset of the administration options. You cannot open storage-role Web pages from the navigation pane of a dedicated application server. To open storage-role Web pages, you must gain access to the storage server.
Application clusters
You can combine up to four application servers to form a cluster. Each cluster connects to one storage server and supports the same telephony server. You must configure all cluster members for the same site.
Increase the system capacity so the application server can support more users. Every application server you add to the cluster increases the number of available ports.
Provide redundancy for any application server in the same cluster. You configure application servers within a cluster identically and are, therefore, interchangeable.
Important All servers in a cluster must be in the same time zone. If your organization spans multiple time zones and if your system topology includes application server clusters, then you need to configure one cluster for each time zone.