Hitachi, Ltd.

Yasuji Morishita

Shigeaki Tanaka

Kenichi Miyamoto

Yasuyuki Katakura

Toshiyuki Utsuki

Yoshikatsu Kasahara

Kenta Kumagai

Kazuhiko Nishiyama

Shinichi Nishiyama

Toshiyasu Hattori

Sayuri Hashizume

Shinji Shibuya

Toshihiko Wada

Tadaharu Maeda

Koushirou Adachi

Tadahisa Ishiwata

Youji Okabe

Toshio Ohdaira

Kaisaku Fujiwara

Shigenori Yokooji

Magnetic disc storage unit for electronic computer

Provided is a cooling method for realizing efficient cooling of a storage apparatus with an airflow separation structure. This storage apparatus has a plurality of cooling areas formed in the cabinet; an external air introduction/discharge device for directing external air to the respective cooling areas, and thereafter discharging the external air from a discharge area of the cabinet outside the cabinet; and an external air guidance area for guiding the external air that passed through each of the cooling areas to the discharge area; wherein the external air guidance area is configured so that the external air that passed through one cooling area will not get mixed with the external air that passed through another cooling area.

Storage apparatus

A disk array system capable of efficiently cooling the canisters and achieving the high-density mounting of the canisters without reducing the number of canisters is provided. In the disk array system having a HDD box which stores a plurality of canisters, a canister on an upstream side of cooling air and a canister on a downstream side of the cooling air both standing upright are arranged with a difference in level therebetween in the HDD box. The canister on the upstream side has a reliability assurance temperature lower than that on the downstream side, and a disk size of the canister on the upstream side is smaller than that on the downstream side. Also, the canister on the downstream side is arranged higher than that on the upstream side so that an alarm indicator LED and a ready indicator LED can be checked visually.

Disk array system

The disk array device () comprises at least one object of cooling that includes at least one of a plurality of disk type storage devices (), and cooling parts (U,L) that cool said object of cooling indirectly by means of a cooling medium.

Disk array device and disk array device housing

Aligned disk drives are installed in a disk box nearly taking a rectangular shape. Every two of the disk boxes are paired and accommodated in a rack in a multi-stage form. Each pair of disk boxes are disposed with their exhaust planes opposed to each other with a gap therebetween. An air intake plane of each disk box opposite to the exhaust is disposed on a front or rear side of the rack. A draft path, having front and rear walls formed by gaps between disk boxes and side walls on left and right planes of the rack, is formed in the rack center. Exhaust fans disposed on top of the rack and having air intake ports nearly equivalent in dimension to a section of the draft path suck in air through the intake and exhaust planes and draft path, and exhaust the air outside the rack.

Disk array apparatus

The invention improves reliability relating to the operating environment temperature and the operating time of a processor for management in a disk array device mounting the managing processor for managing the state of the device, and further realizes mounting having no bad influence on the temperature environment within the disk array device. The disk array device uses a dedicated PC for industry in the processor for management, and is constructed such that the processor for management and a computer for output used to output management information of this processor for management are separated. Further, the processor for management and the computer for output are arranged within a disk array box body in positions for preventing no flow of a ventilating wind within the disk array box body. Here, when the computer for output is used, the disk array device is set to a mode in which the computer for output is pulled out of the disk array box body and is further rotated and used.

Disk array device

A cooling structure for electronic devices includes a plurality of electronic device accommodating boxes, in which electronic devices are accommodated, disposed in a casing in multiple stages. A vent portion which allows ventilation between the inside and the outside of the casing is formed in a ceiling of the casing. In a first accommodating portion for accommodating the first electronic device accommodating box which is defined at the stage close to the ceiling, a hollow duct having two opening faces is arranged. The first opening face faces the vent portion and the second opening face faces a second accommodating portion for accommodating the second electronic device accommodating box which is defined at the stage remote from the ceiling. Air inside the second electronic device accommodating box is discharged through the inside of the duct. Air inside of the first electronic device accommodating box is discharged from the vent portion.

Cooling structure for electronic devices

A storage apparatus includes a first rack having electrical conductivity, on which are mounted channel control parts receiving data input/output requests, and disk control parts performing read/write of data from and to disk drives, a second rack having electrical conductivity, on which are mounted disk drives, and relay parts for relaying communications between the disk drives and disk control parts; and communication cables for connecting disk control parts to relay parts. The communication cables include a transmission medium through which to transmit data, a first conductor having electrical conductivity and surrounding the transmission medium, a second conductor having electrical conductivity and surrounding the first conductor, and a covering surrounding the second conductor. The first conductor is connected to ground potential supply circuits provided in at least either disk control parts or relay parts, and the second conductor is connected to at least one of the first and second racks.

Storage apparatus and shielding method for storage apparatus

A disk module with a disk for recording information and a controller for controlling operation of the disk in a cabinet, is formed by providing a heat radiation member on at least one of two side faces of the cabinet. The disk array apparatus includes a plurality of disk boxes, each of which accommodates a plurality of the disk modules therein and has an inlet surface on one end side and an exhaust surface on the other end side; a rack which can accommodate the disk boxes therein in a stacking manner and of which surfaces facing the inlet surfaces of the boxes are capable of ventilation; and an exhaust fan arranged in the rack. The heat radiation member is provided on at least one of the two side faces of the cabinet for each disk module, which are parallel to the recording surface of the disk.

Disk module, and disk array apparatus

Front panel of a storage unit

Disc drive

Two substrates respectively mounting electric parts are disposed so that parts-mounting faces of the two substrates oppose each other. The opposed substrates are connected at the respective opposing side edges thereof to each other by means of respective cover plates. High voltage electric parts are mounted on one of the substrates, while heat/electromagnetic wave generating electric parts are mounted on the other of the substrates to obtain heat radiation and electromagnetic wave shielding.

Growing community of inventors

Odawara, Japan

Yasuji Morishita