To monitor a replication environment, the Replication Manager connects to the servers in the environment through the Replication Monitoring Services—a middle-management layer that provides monitoring capabilities for replication environment. RMS is an optional component of a replication system. It is used to monitor large or complex environments. It also provides the ability to control the flow of data and set the configuration parameters.
In a three-tier solution, you set up an RMS server to help you monitor your replication environment. In this solution, RMS monitors the health and availability of the servers and other components in your replication environment.