C1000-174: IBM WebSphere Application Server Network Deployment v9.0.5 Administrator

Memory-to-memory replication can store a session on one or more other application servers for failure recovery. Configuring more than one session replica prevents the backup copy from being a single point of failure, reducing the risk of session-data loss during failover. GetDWLMTable=true is required for a cluster that uses memory-to-memory replication, but it does not itself provide additional session replicas.