Abstract: A storage control system of the present invention can carry out settings for a storage device using redundantly configured access channels. A controller of the storage control system can access a storage device using a plurality of access channels of system A and system B. Respective I/F control units each comprise a plurality of normally open-type switches. The switches of system A and the switches of system B are respectively wired-OR connected. A disk control unit outputs a control signal to an I/F control unit on the basis of a setting table. When a failure occurs in an I/F control unit of system A, the output signals of the respective switches transfer to a high-impedance state. Therefore, a storage device can be set by outputting, from an I/F control unit of system B, a signal corresponding to a desired operational mode and identification information.

Abstract: A power device of the present invention makes a plurality of DC/DC converters redundant, and supplies power individually to a plurality of disk drives. Each first DC/DC converter is respectively made correspondent to a subgroup. One first DC/DC converter is connected to the disk drives respectively inside one subgroup, and the other first DC/DC converter is connected to the disk drives inside the other subgroup. A second DC/DC converter is made correspondent to all of the subgroups. Second DC/DC converters respectively supply direct-current power to any one disk drive of the disk drives in the subgroups.

Abstract: A storage system includes a plurality of disk drives, one or more controller boards for controlling data read and write from/to the plurality of the disk drives, and a Fibre Channel switching board for controlling path switching between the controller boards and the plurality of the disk drives. The Fibre Channel switching board has a control logical circuit for adjusting a control signal system between the controller boards and the disk drives according to a connection confirmation signal indicating whether or not the control signal cable is connected to the Fibre Channel switching board.

Abstract: A disk array device and a method of supplying power to a disk array device to which power is supplied by at least two AC inputs are provided. Where at least two AC/DC power-supply groups are provided in correspondence with each of the AC inputs and each AC/DC power-supply group includes at least two AC/DC power supplies that are connected to the AC input corresponding to that group, outputs from the AC/DC power supplies are summed separately for each group to obtain group total outputs for each group, and the group total outputs are input to each of a plurality of loads in the disk array device to provide power to each of the loads.

Abstract: A disk array device and a method of supplying power to a disk array device to which power is supplied by at least two AC inputs are provided. Where at least two AC/DC power-supply groups are provided in correspondence with each of the AC inputs and each AC/DC power-supply group includes at least two AC/DC power supplies that are connected to the AC input corresponding to that group, outputs from the AC/DC power supplies are summed separately for each group to obtain group total outputs for each group, and the group total outputs are input to each of a plurality of loads in the disk array device to provide power to each of the loads.

Abstract: The storage control device of the present invention detects faults on the disk drives at an early stage, thus enhancing convenience of use. The disk drives are switchingly connected to a subordinate communication control unit via a switching circuit. An error information collection unit of an error monitoring unit detects errors which have occurred at each port of the switching circuit. The errors which have been detected are stored in an intermediate storage unit, and are input via an error information notification unit to a fault recovery control unit of the subordinate communication control unit. By doing this, it is possible to immediately specify whether or not a fault has occurred on any of the disk drives, and to start a fault recovery procedure.

Abstract: In a RAID system, the power supplied to hard disks (HDDs) can be increased, and a plurality of types of HDDs can be installed. A plurality of HDD packs 33 are supplied with a single high voltage from a motherboard 28. The HDD packs 33 each accommodate, in a canister, an HDD 107, 181, 185 or 187 with different power supply specifications or communication interface specifications, as well as a DC/DC converter 109 to convert the power supply. Part of the HDD packs 33 have a data transfer interface conversion circuit 195 as well.

Abstract: In a RAID system, the power supplied to hard disks (HDDs) can be increased, and a plurality of types of HDDs can be installed. A plurality of HDD packs 33 are supplied with a single high voltage from a motherboard 28. The HDD packs 33 each accommodate, in a canister, an HDD 107, 181, 185 or 187 with different power supply specifications or communication interface specifications, as well as a DC/DC converter 109 to convert the power supply. Part of the HDD packs 33 have a data transfer interface conversion circuit 195 as well.

Abstract: A disk array device and a method of supplying power to a disk array device to which power is supplied by at least two AC inputs are provided. Where at least two AC/DC power-supply groups are provided in correspondence with each of the AC inputs and each AC/DC power-supply group includes at least two AC/DC power supplies that are connected to the AC input corresponding to that group, outputs from the AC/DC power supplies are summed separately for each group to obtain group total outputs for each group, and the group total outputs are input to each of a plurality of loads in the disk array device to provide power to each of the loads.

Abstract: Provided is a highly reliable disk array device.

Abstract: A disk array device and a method of supplying power to a disk array device to which power is supplied by at least two AC inputs are provided. Where at least two AC/DC power-supply groups are provided in correspondence with each of the AC inputs and each AC/DC power-supply group includes at least two AC/DC power supplies that are connected to the AC input corresponding to that group, outputs from the AC/DC power supplies are summed separately for each group to obtain group total outputs for each group, and the group total outputs are input to each of a plurality of loads in the disk array device to provide power to each of the loads.

Abstract: The present invention relates to a storage unit comprising: a channel control portion for receiving a data input/output request; a cache memory for storing data; a disk control portion for performing input/output processing on data in accordance with the data input/output request; and a plurality of disk drives for storing data, wherein at least two of the disk drives input data to and output it from the disk control portion at different communication speeds. Further, the storage unit has a plurality of communication paths provided to connect at least one of the disk drives in such a manner as to constitute a loop defined by the FC-AL fiber channel standards, so that the communication speeds can be set differently for these different communication paths.

Abstract: A storage device that is communicably connected to a host computer includes a plurality of disk units for storing data from the host computer. Each of the disk units includes a plurality of hard disks and is connected to one of a plurality of ports. A plurality of disk unit control units control the plurality of disk units, and each of the disk unit control units includes a memory for temporarily holding data from the host computer. A plurality of control signal transmission cables transmit control signals from the disk unit control units to the disk units. At least one of the control signal transmission cables is connected to at least two of the disk unit control units and transmits different control signals to at least two of the disk units. This enables device miniaturization and reduced costs for the storage device without a drop in reliability, even when a variety of devices are mounted in a highly dense configuration.

Abstract: The present invention relates to a storage unit comprising: a channel control portion for receiving a data input/output request; a cache memory for storing data; a disk control portion for performing input/output processing on data in accordance with the data input/output request; and a plurality of disk drives for storing data, wherein at least two of the disk drives input data to and output it from the disk control portion at different communication speeds. Further, the storage unit has a plurality of communication paths provided to connect at least one of the disk drives in such a manner as to constitute a loop defined by the FC-AL fiber channel standards, so that the communication speeds can be set differently for these different communication paths.

Abstract: The present invention enables the configuration of a disk array device to be changed in accordance with its purpose of use. Plural disk drive groups each comprising plural disk drives 81 are disposed in the same disk drive unit. Respective disk drive groups are connected to respectively different HDD control boards 82. Each HDD control board 82 is disposed with a connection circuit 200 and switch circuits 210. A signal is outputted from a management terminal to switch the switch circuits 210, whereby adjacent HDD control boards 82 can be connected and operated. Also, by switching the switch circuits 210, adjacent HDD control boards 82 can be mutually separated and operated independently.

Abstract: In a disk array device on which plural power supply units and plural HDD modules operated by the power supplied from power supplies of the power supply units subjected to temperature control by the airflow generated by cooling fans are connected in parallel and mounted via a relay substrate, the power supply unit has a power control unit for supplying power to the cooling fan in a normal operation from the power supply in the self power supply unit having the relevant cooling fan, and, when failure occurs in the power supply, supplying power to the cooling fan in the self power supply unit having the relevant power supply from another power supply in another power supply unit different from the relevant self power supply unit.

Abstract: A disk array device having two or more disk units, each disk unit including at least one disk drive, at least either of said disk units having parity bits carrying data recovery information, comprises at least one backup battery provided for each of said disk unit.

Abstract: A disk array device and a method of supplying power to a disk array device to which power is supplied by at least two AC inputs are provided. Where at least two AC/DC power-supply groups are provided in correspondence with each of the AC inputs and each AC/DC power-supply group includes at least two AC/DC power supplies that are connected to the AC input corresponding to that group, outputs from the AC/DC power supplies are summed separately for each group to obtain group total outputs for each group, and the group total outputs are input to each of a plurality of loads in the disk array device to provide power to each of the loads.

Abstract: A power source control apparatus for a disk subsystem includes a plurality of hard disk drives (HDDs) each with two systems of fiber channel interface ports, an HDD drive section, and an HDD control logic section. The HDD drive section includes two systems of fiber channel control sections, each of which includes a fiber channel interface and a fiber channel control interface. The HDD control logic section includes two systems of HDD control logics that control read/write accesses to the HDDs. Fiber channel control signals are supplied from the HDD control logics to the fiber channel control interfaces, respectively, and the fiber channel control signals are also used to control the power source of the HDD drive section.

Abstract: A disk array device and a method of supplying power to a disk array device to which power is supplied by at least two AC inputs are provided. Where at least two AC/DC power-supply groups are provided in correspondence with each of the AC inputs and each AC/DC power-supply group includes at least two AC/DC power supplies that are connected to the AC input corresponding to that group, outputs from the AC/DC power supplies are summed separately for each group to obtain group total outputs for each group, and the group total outputs are input to each of a plurality of loads in the disk array device to provide power to each of the loads.