Abstract: The storage control device of the present invention reduces power consumption by stopping the flow of power to enclosures that are not being accessed. A plurality of additional enclosures are connected to a base enclosure by means of a daisy-chain connection. The respective additional enclosures are divided into three levels, namely a low usage frequency level, a medium usage frequency level, and a high usage frequency level depending on the connection distance of the additional enclosures from the base enclosure. Drives that have not been accessed for a predetermined time are spun down. When all the drives in the enclosure are in the spindown state, the supply of power from the power supply to the respective drives is stopped. Further, when the flow of power to an additional enclosure located below the enclosure itself has stopped, the switch of the latter enclosure is turned OFF and the flow of power to the additional enclosure is stopped.

Abstract: A storage controller of the present invention reduces maintenance work by the user by irreplaceably mounting the respective component parts inside an enclosure. A plurality of disk drives, which comprise a spare drive, and repair slots are arranged in close proximity in a matrix on the front side inside the enclosure. A backboard is disposed rearward of the respective disk drives. A plurality of control boards are arranged rearward of the backboard by being stacked one atop the other. A plurality of disk drives and a plurality of batteries respectively stacked one atop the other are arranged on the one side of the respective control boards. A plurality of power devices stacked one atop the other are arranged on the other side of the respective control boards. A plurality of cooling fans are arranged in the center part of the enclosure. The respective parts are affixed to the enclosure so as to be irreplaceable under normal circumstances.

Abstract: The storage control device of the present invention reduces power consumption by stopping the flow of power to enclosures that are not being accessed. A plurality of additional enclosures are connected to a base enclosure by means of a daisy-chain connection. The respective additional enclosures are divided into three levels, namely a low usage frequency level, a medium usage frequency level, and a high usage frequency level depending on the connection distance of the additional enclosures from the base enclosure. Drives that have not been accessed for a predetermined time are spun down. When all the drives in the enclosure are in the spin down state, the supply of power from the power supply to the respective drives is stopped. Further, when the flow of power to an additional enclosure located below the enclosure itself has stopped, the switch of the latter enclosure is turned OFF and the flow of power to the additional enclosure is stopped.

Abstract: A storage controller of the present invention reduces maintenance work by the user by irreplaceably mounting the respective component parts inside an enclosure. A plurality of disk drives, which comprise a spare drive, and repair slots are arranged in close proximity in a matrix on the front side inside the enclosure. A backboard is disposed rearward of the respective disk drives. A plurality of control boards are arranged rearward of the backboard by being stacked one atop the other. A plurality of disk drives and a plurality of batteries respectively stacked one atop the other are arranged on the one side of the respective control boards. A plurality of power devices stacked one atop the other are arranged on the other side of the respective control boards. A plurality of cooling fans are arranged in the center part of the enclosure. The respective parts are affixed to the enclosure so as to be irreplaceable under normal circumstances.

Abstract: The storage control device of the present invention reduces power consumption by stopping the flow of power to enclosures that are not being accessed. A plurality of additional enclosures are connected to a base enclosure by means of a daisy-chain connection. The respective additional enclosures are divided into three levels, namely a low usage frequency level, a medium usage frequency level, and a high usage frequency level depending on the connection distance of the additional enclosures from the base enclosure. Drives that have not been accessed for a predetermined time are spun down. When all the drives in the enclosure are in the spin down state, the supply of power from the power supply to the respective drives is stopped. Further, when the flow of power to an additional enclosure located below the enclosure itself has stopped, the switch of the latter enclosure is turned OFF and the flow of power to the additional enclosure is stopped.