Disk array system and disk drive unit

摘要

A disk array system including at least one channel control portion for receiving an input/output request of data from an information processor and exchanging the data with the information processor; at least one disk control portion for exchanging the data with a disk drive in accordance with the input/output request; a cache memory for storing the data exchanged between the channel control portion and the disk control portion; a cache switch for forming a communication path between the channel control portion and the cache memory; a shared memory for storing the input/output request exchanged between the channel control portion and the disk control portion; and at least one disk drive unit including the disk drive, and a canister for storing the disk drive; wherein the canister is provided with a power unit for supplying electric power to the drive device for driving the disk drive.