Perhaps a silly question this one, but I was wondering if it were possible to multipath a storage array across a FC connection and an iSCSI connection? Given that the main point of multipathing seems to be to increase resiliancy in the face of hardware failure, it seems logical that providing a storage pathway that depends on networking hardware would be a suitably resiliant alternative to a pathway that relies on FC.
I appreciate that the performance might not be the same across both, but might this not be an acceptable low-cost solution where there isn't enough budget for multiple FC connections (and fabric)?