The single data center HA configuration ensures availability through the use of redundant and load-balanced nodes for the web application, cache, document conversion, and databases. This configuration requires that all of the nodes be physically located in the same data center.
As an example, here is how a single data center HA configuration might look (your configuration may vary):
In this configuration, the web application nodes are configured in a cluster and deployed behind a load balancer, preferably an enterprise-grade load balancer such as the F5 BIG-IP (for more information about how to set up a cluster, see Clustering in Jive). At Jive Software, we have observed that most customers deploy multiple web applications nodes (usually three or more) in a single data center configuration.
Alternatively, you could choose to deploy additional web application nodes in the cluster as passive participants which are online and standing by (i.e., the Jive application is running on these nodes, but not serving requests), and available to come online if necessary.