A hybrid service group is for replicated data clusters and is a combination of the failover and parallel service groups. It behaves as a failover group within a system zone and a parallel group across system zones.
A hybrid service group cannot fail over across system zones. VCS allows a switch operation on a hybrid group only if both systems are within the same system zone. If no systems exist within a zone for failover, VCS calls the nofailover trigger on the lowest numbered node. Hybrid service groups adhere to the same rules governing group dependencies as do parallel groups.