Provided is a disk array device or an electronic device having an enhanced cooling performance with lower noises. The disk array device has doors in the front side and in the rear side of the device, each of the doors is formed with outside openings which are louver-like or bend-like, the louver- or bend-like openings in the doors being directed in directions which are opposite to each other between the door on the suction side and the door on the exhaust side.