Patent ID: 7738254

Claim:
A disk array system provided with a group of storage devices and a controller for controlling these devices, comprising: a basic chassis having openings in front and rear surfaces thereof and a backboard fixed at a midpoint in its interior; and a plurality of storage device modules, two duplicated battery modules, two duplicated controller modules and two duplicated power source modules as modules installed by insertion/removal and fixation to a front part and a rear part of the backboard in the basic chassis, wherein the plurality of storage device modules and the two battery modules are installed to the front part of the basic chassis and the two controller modules and the two power source modules are installed to the rear part, object modules including the controller modules, the battery modules, and the power source modules are provided with a common operating structure for operations of insertion/removal and fixation thereof, the operating structure is a lever structure using the principle of leverage and it includes a rotary shaft portion which is fixed to the object module and serves as a fulcrum point, a lever main body located on one side of the rotary shaft portion, a latch portion connected to the lever main body and containing no screw part, and a hook portion located on the other side of the rotary shaft portion, and when the object module is inserted and fixed, by an action of rotating the lever main body of the operating structure and pressing the latch portion by a user, the latch portion is fixed to a receiving portion of the object module or the chassis, the hook portion is fixed to the receiving portion on the chassis side, and a connector on a rear surface of the object module and a connector on the backboard are connected to each other.