The statistics allow you to monitor the availability of each server and the state of the components, such as connections and routes, in a replication environment.
The status of a server is determined by its availability, whether it is up or down, and the state of the components within the server. The status of the server is a roll-up of the status of all the components within it.
Availability monitoring provides you with the information to determine not only the availability of the servers but also their effectiveness in the replication environment. There are a number of availability monitoring statistics that are gathered for replication. The process of gathering these statistics is turned on by default with the default interval time.