Active/Passive. A two-node configuration with one node being active and one node in a standby state at any given time. This is the most common configuration, and the one that is recommended for use with Broker applications.

Active/Active. A two-node configuration with both nodes being active at the same time. Each node typically runs different sets (or instances) of services. When one node fails, the services on the failed node will failover to the active node.

N-to-1. A multi-node configuration with one dedicated spare node. After the original failed node is recovered, services are restored from the spare node to the original node and the spare node returns to its standby state.