Abstract: A disk array apparatus includes a plurality of disk drives arranged in at least one disk drive line in a direction of an airflow, at least one shield plate, a housing containing the disk drives and the at least one shield plate therein, and flow passages arranged between an upper surface of the disk drives and an inner wall of the housing for enabling the airflow to pass through. The at least one shield plate is arranged between at least two of the disk drives of the at least one disk drive line for controlling the airflow on a downstream side of the flow passages.

Abstract: For achieving installation of disk drives at high density, as well as, a large capacity and a high speed of the disk array apparatus, the disk array apparatus comprises disk drives, a box containing a large number of the disk drives in a direction of thickness thereof, wherein a throttle of flow passage, which combines a sour absorbing material in common, is provided above the disk drives in the downstream side of the disk array apparatus.