Patent ID: 7876557

Claim:
A disk array device comprising: a plurality of hard disk drive modules each having a disk drive for recording data; a controller module having a controller that controls writing/reading data into/from the disk drives; a power supply module that supplies power to the plurality of hard disk drive modules and the controller module; an operation module; a plurality of fan modules having respective fans that cool the plurality of hard disk drive modules, the controller module, and the power supply module; and a chassis housing the plurality of hard disk drive modules provided on a front side thereof, and the controller module, the power supply module, and the plurality of fan modules provided on a back side thereof, the controller module and the power supply module being placed between the plurality of fan modules, said operation module including an alarm buzzer stop switch and a power switch, said power switch having an ON-side whereby power is provided to said plurality of hard disk drive modules and an OFF-side whereby power is not provided to said plurality of hard disk drive modules, said alarm buzzer stop switch being disposed on said ON-side of said power switch, said operation module further including a setting switch that is accessible from a space in front of a hard disk drive module that is disposed adjacent to said operation module.