Patent ID: 7380057

Claim:
A storage device controlling apparatus configured to be coupled to a storage device storing data and coupled to an information processing apparatus via a network, the storage device controlling apparatus being accommodated in a chassis, said storage device controlling apparatus comprising a circuit board accommodated in said chassis, said circuit board including: an I/O processor formed thereon, the I/O processor being configured to output to said storage device I/O requests; a first connector located on said chassis, at least said I/O processor and a power supply unit being connected through the first connector; a file access processing section formed thereon, the file access processing section configured to accept requests to input and output data on a file basis from the information processing apparatus, and configured to send the I/O requests to the I/O processor; a second connector located on said chassis, electric power being supplied to said file access processing section through the second connector; a plurality of circuit board sections overlapped on each other in parallel to constitute a circuit board unit, wherein said file access processing section and said I/O processor are formed in the circuit board sections separately from each other, wherein said chassis includes a fan section which creates an air stream in said circuit board accommodated therein.