In a mutually aware cluster, all OpenSwitch servers in the cluster must have MUTUAL_AWARE set to 1. If one of the OpenSwitch companion servers does not have MUTUAL_AWARE set to 1, the other OpenSwitch companion server marks that server as “down.” This inconsistency is recorded in the error log.
If both OpenSwitch servers are started with the -O option, the second OpenSwitch server does not start and the following error occurs:
Can not start with override option when companion is already running.
See “Using command line options,” in Chapter 4, “Starting and Stopping OpenSwitch and RCMs” in the OpenSwitch Administration Guide.