The Oracle Solaris I/O multipathing features, formerly referred to as StorageTek Traffic Management Software (STMS), do not provide any method for Fibre Channel (FC) paths to be prioritized over iSCSI paths.
Because there is no method to prioritize FC paths over iSCSI, all optimized paths are treated equally. For combination LUNs in round-robin mode, traffic is sent over both FC and iSCSI paths. For combination LUNs in static mode, either an FC or iSCSI path is chosen.