To distinguish the redundant from the primary RCM instance, use the -R flag with the rcm command at the command line when you start the redundant RCM. When you use the -R option, the redundant RCM:
Does not perform a failover upon detection of database or Replication Server problems
Handles the command processing for the secondary OpenSwitch
Assumes the control of the failover process upon the loss of its connection to the primary OpenSwitch
Restricts application end users’ access unless the primary OpenSwitch server fails
