A role reversal is the act of promoting the secondary logical drive
You can perform a role reversal either by:
-or-
Both options result in the promotion of the secondary logical drive and the demotion of the primary logical drive to effect the role reversal.
If communication with the remote storage subsystem is down, you can force a role reversal even when there will be a resulting Dual Primary
You can also perform a role reversal using the set command in the Script Editor or on the command line. See "Using the set Command" in the Enterprise Management Window online help.