Patent attributes
An efficient exhausting and cooling structure in a disk array apparatus is provided. A HDD module mounted in a HDD box of the disk array apparatus includes, around a HDD, a thermoelectric device which converts heat of HDD into electric power by using temperature difference, a cooling fan automatically operated by power supply of the thermoelectric device, and an air duct which directs air flowing and exhausted from the cooling fan to a rear face side of the HDD module. The entire apparatus is cooled and air therein is exhausted by the operation of exhaust fan operated by main power supply of the apparatus provided in an upper part of the chassis and the automatic operation of the cooling fan of each HDD module.