Fujitsu Corporation

Hirotaka Shikada

Kazuo Tanaka

Satoshi Kubota

Hiroshi Nagaoka

Masafumi Asano

Nobuyoshi Aida

Hirofumi Konno

Takatoshi Katou

Kazuo Kubo

Kiichi Koyama

Tatsuya Sudo

An information processing apparatus comprises a first heat generation circuit, a second heat generation circuit, a blocking assembly, and a processor. The blocking assembly performs a first operation of blocking air flowing from the first heat generation circuit toward the second heat generation circuit or a second operation of passing the air, and the processor is configure to instruct the blocking assembly to perform the first operation in a case where a temperature of the air is higher than a predetermined value, and instruct the blocking assembly to perform the second operation in a case where the temperature of the air is lower than the predetermined value.

Information processing apparatus and cooling method

A loop status monitoring apparatus monitors a status of an arbitration loop that includes a plurality of devices and a switch that controls connections between the devices, has at least one of loop status detection data, primitive detection data, and frame count data, and includes a failure detecting unit that detects whether an initialization failure, which is a connection failure, has occurred during an initialization of the arbitration loop from the loop status detection data; and a device identifying unit that identifies, when the initialization failure is detected, a device with the initialization failure occurred from the primitive detection data or the frame count data.

Loop status monitoring apparatus

An input/output device and a method of setting up identification information for an input/output device, to confirm which slot of which device enclosure each unit is mounted in, within a short time, from a map, and execute quick access to the unit. A unit mounted on a device enclosure is assigned a slot identification information that does not overlap with that for another unit in the device enclosure, each device enclosure is assigned device enclosure identification information that does not overlap with that for another device enclosure, and a table is formed using unit identification information, which consists of the slot identification and the device enclosure identification information, and which does not overlap with that for another unit in the device, thus allowing a unit in the device to be specified.

Input/output device and method of setting up identification information in input/output device

A storage system in which a plurality of storage devices are connected by a pair of loops, disconnects a faulty storage device. The faulty storage device is disconnected from said loops by using, in conjunction, a first disconnect mode, in which a disconnect instruction is issued to a device control unit via a first path which connects controllers and device control units, and a second disconnect mode, in which a disconnect instruction is issued to a device control unit via a second path which connects loops connecting the plurality of storage devices, storage devices, and device control units. Even when a pair of connection ports of a storage device is abnormal, and even when the first path is abnormal, the faulty storage device can be disconnected reliably.

Storage system and disconnecting method of a faulty storage device

Growing community of inventors

Kawasaki, Japan

Hirotaka Shikada