Adding additional application servers

You must add application servers to a cluster from a storage server.

Before you begin

Install and configure all application servers that you plan to associate with the site. See Chapter 4: Initial administration of the application role.
Add the first application server to the site. See Adding the first application server.
Ensure that all application servers that you plan to add to the topology are running.

On the Administration menu, click Messaging > Messaging System (Storage) > Topology.
In the Add Application Server area:
1. In the IP address field, enter the IP address of the application server you are joining to the cluster.
2. In the Role in application server cluster field, select Form (or join) a cluster by joining existing application server:
3. From the drop-down list, select the application server that you want to join.
  All application servers in a cluster are identical. Hence, you can select any server from the list.
  
  You can join up to four application servers to form a cluster. However, you must configure all servers in a cluster to use the same time zone.
Click Add.
The system:
- Adds the server you identified in Step 2a in the Sites / Application Servers area.
- Copies the site properties from the application server that you selected in Step 2c to the server you identified in Step 2a.
Repeat Step 2 and Step 3 for each application server that you want to add to the site.
Click Update.
The system displays a confirmation message.
Click OK to proceed.
Restart Messaging.
For more information, see Stopping Messaging and Starting Messaging.

Configure a cluster of application servers. See Configuring a cluster.