Topic Last Modified: 2013-11-01

High availability and disaster recovery for Persistent Chat Server requires additional resources beyond what is typically needed for full operation. Before configuring Persistent Chat Server for high availability and disaster recovery, ensure that you have the following resources in addition to what is required for standard Persistent Chat Server operation. For additional configuration information, see Configuring Persistent Chat Server.

The following figures provide examples about how the entire Persistent Chat Server pool can be configured in the two different stretched pool topologies:

The following figure shows a stretched Persistent Chat Server pool topology where data centers are geo-located with high bandwidth/low latency.

Stretched Persistent Chat Server pool when data centers are geo-located with high bandwidth/low latency.

Persistent Chat Server pool HBW configuration exam

The following figure shows a stretched Persistent Chat Server pool topology where data centers are geo-located with low bandwidth/high latency.

Stretched Persistent Chat Server pool when data centers are geo-located with low bandwidth/high latency.

Persistent Chat Server pool LBW configuration exam