A Resource Domain allows Server Groups to be grouped together and associated with a type of application resource. Each Resource Domain has a “Profile” that indicates the application usage of the resource domain. The PCA application defines three Resource Domain Profiles: Policy and Charging Session, Policy Binding, and Policy and Charging DRA.
Once SBR Server Groups are configured to host the session and binding databases, those Server Groups can be added to Policy Binding and Policy and Charging Session Resource Domains. An SBR Server Group must be associated with either a Policy and Charging Session or Policy Binding Resource Domain, or with both Policy and Charging Session and Policy Binding Resource Domains. The latter configuration is expected to be used only for small deployments.
DA-MP servers are configured in a single server group per PCA DSR with a server group function of "DSR (multi-active cluster)". For a mated pair deployment, the two DSR (multi-active cluster) server groups containing all of the DA-MPs at the two sites must be included in a PCA Resource Domain. For a non-mated deployment, the DSR (multi-active cluster) server group must be in its own P and Charging DRA Resource Domain. For a mated triplet deployment, the three DSR (multi-active cluster) server groups containing all of the DA-MPs at the three sites must be included in a Policy and Charging DRA Resource Domain.