Hitachi, Ltd.

Katsuya Sato

Hironori Oikawa

Hiroshi Shimizu

Shintaro Inoue

Yutaka Takata

Noboru Morishita

Eiju Katsuragi

Yoshihiro Yoshii

Masashi Yoshida

Naohiro Ozawa

Kentaro Hanma

Toshiya Seki

Takashi Aoyagi

Yusuke Saito

Seiji Okunomiya

Yutaka Ohshima

Toshihiro Ishiki

Yusuke Mure

Takeshi Hizono

Yasuo Iino

Kohichi Tomatsuri

Yoichi Narui

Toshihiko Goth

Masahi Yoshida

A storage control system reads a data set from a storage apparatus if necessary in response to an I/O request. A data set contains data and an address. The storage control system performs an all-type address check which is a check to determine whether one of a first address and second address which correspond to a read-target data set in address translation information, which is information indicating a mapping relationship between one or more first addresses and one or more second addresses, matches the address among the data and address contained in the data set. The one or more first addresses are each an address which belongs to the first address type. The one or more second addresses are each an address which belongs to the second address type. The storage control system performs processing according to the I/O request when the result of the all-type address check is true.

Storage control system and storage control method

Server

The present invention comprises a virtual volume, which is a virtual storage area comprising multiple virtual page groups, a pool, which is a storage area comprising multiple pool page groups having different access performance, and a controller, which comprises a corresponding relationship between the virtual page and the pool page, and accesses the pool page corresponding to the virtual page based on accesses to the virtual page from other apparatuses, and the controller, based on an access load trend with respect to each virtual page in each time slot, executes processing for deciding an ideal pool page allocation destination for each virtual page in each time slot, and reallocating a virtual page to the ideal pool page at a time, which is prior to a start time, so that the ideal pool page can be allocated to each virtual page by the start time of each time slot.

Storage system and method for reallocating data

An electronic equipment is provided, which comprises a liquid-cooling system and a cooling fan as a cooling system, efficiently cools the liquid-cooling system, and reduces fan noise. The electronic equipment is provided with a liquid-cooling system, in which heat generated in a heat generating portion is transmitted to a heat radiating portion with a liquid as a medium to achieve cooling, and an air-cooling system, in which heat transmitted to the heat radiating portion is forcedly cooled, and comprises a pump that circulates the liquid between the heat generating portion and the heat radiating portion, a fan that forcedly discharges heat of the heat radiating portion to an outside, a temperature sensor that detects temperature of the heat generating portion, and storage information that beforehand prescribes the relationship between temperature of the heat generating portion and voltages of the pump and the fan, the electronic equipment being constructed such that a pump voltage is raised without changing a fan voltage when the detected temperature exceeds a first temperature, and a fan voltage is raised when temperature detected by the temperature sensor exceeds a second temperature higher than the first temperature, thus further increasing a cooling capacity.

Electronic equipment provided with cooling system

In order to efficiently cool highly heat generating components mounted on an electronic device, it is necessary to provide a large heat sink, which is the heat dissipation member, and this entails the problem of an enlarged device size and accordingly an increased installation space. A heat receiving member is attached to a heat generating component installed in a housing, a fan for discharging air within the housing out of the housing is attached on a part of a wall of the housing, a heat sink having a base and fins arranged on the base is attached opposite the fan on an outer face of the wall of the housing or protruding out of the wall with the fins facing the housing, and the heat sink and the heat receiving member are connected by heat transport means.

Electronic device having a heat dissipation member

Ink ribbon cassette

An operation device of a tape recorder adapted to bring mechanisms such as a pinch roller, magnetic heads and so on into constant-speed tape feeding condition, making use of a part of torque of a member such as a capstan which is driven by a motor. The device has a manual operation system and an automatic actuating system. The manual operation system includes a manually operable constant-speed tape feed operation member and first locking means adapted to lock the manual operation member at an operation position to which the same has been displaced. The automatic actuating system includes a first rotary body adapted to be rotated in relation with the rotation of the shaft of the motor, a second rotary body having an engageable portion capable of performing a torque-transmitting engagement with the first rotary body and a non-engageable portion which cannot engage the first rotary body, an actuating plate adapted to be displaced by the rotation of the second rotary body and to control the position of the mechanisms, and second locking means to lock the mechanisms at a position to which they have been displaced. As the operation member is operated, it is locked at the operation position by the first locking means. A part of power for displacing the operation member to the operation position is transmitted to the second rotary body, which has confronted the first rotary body at its non-engageable portion, is slightly rotated to bring its engageable portion into engagement with the first rotary body, so as to be continuously driven by the latter. As the second rotary body is driven, it displaces the mechanisms through the actuating plate, and the mechanisms are held at the position to which they have been moved.

Operation device of tape recorder

Growing community of inventors

Zama, Japan

Katsuya Sato