Remote cache utilization for mirrored mass storage subsystem

摘要: A digital computer system includes a master mass storage subsystem and slave which provides mirrored for the subsystem. One or more host systems can access information in to retrieve from, update stored in, When accesses subsystem, is cached subsystem's cache memory, when updated, will be updated both memories prior being their respective devices. wishes information, if not of still from operation, enable transferred by computer. Otherwise (that is, subsystem), retrieved devices subsystems's memory