® Community Server clusters provide redundancy, load balancing, and failover for community connections. Sametime
Community Servers are clustered as part of an IBM Lotus
® server cluster. A Sametime
Community Server can belong to only one cluster.
Setting up a cluster also allows users’ contact lists to be replicated to all servers in the cluster. Without a clustered Sametime
environment, the VPUSERINFO database containing a user’s contact list is saved only on a user’s home server. If the home server is unavailable, the user cannot log in. If the user’s home server changes, the contact list is lost unless the user saved the list locally.
servers is the maximum number of servers in a cluster, which means the number of Sametime
servers in a cluster is also six. Generally, the largest communities can be supported with fewer than six Sametime
Community Servers operating in a cluster. Two or more clusters pointing to the same Sametime
Community Server is not supported.
This section explains how to cluster a group of Sametime
Community servers, using the example of clustering two servers.
Parent topic: Installing a Sametime Community Server and supporting software
Previous topic: Installing and setting up a stand-alone Community Services multiplexer
Next topic: Configuring Sametime Community Server connectivity
Clustering Sametime servers for high enterprise availability