Patent ID: 8006132

Claim:
A storage subsystem connected to a host computer via a communication network, comprising: a plurality of storage apparatuses for storing data from said host computer; a plurality of DC power supplies arranged in correspondence to each of said storage apparatuses, and for supplying DC power to each of said storage apparatuses via a main power supply wiring; a redundant DC power supply for generating, with any one of the storage apparatuses among said plurality of storage apparatus as a load, DC power to said load; and an auxiliary power supply wiring for guiding the output of said redundant DC power supply to each of said storage apparatuses; wherein said auxiliary power supply wiring is configured by partially including a wiring that is common to respective power supplies, and wherein each of said storage apparatuses and each of said power supplies are mounted on a backboard by being separated into multiple stages, and an air hole is formed at a corresponding portion between each of said storage apparatuses or between each of said power supplies on said backboard.