Fujitsu Corporation

Showa Denko K.k.

Fujitsu Limied

Toshio Sugimoto

Ken Tamanoi

Takuya Uzumaki

Tsutomu Tanaka

Haruhiko Izumi

Motonobu Mihara

Ryosaku Inamura

Koji Matsumoto

Jun Tanaka

Masakazu Taguchi

Keiji Shono

Masaharu Moritsugu

Miyozo Maeda

Tomonori Ikeya

Masanori Kimura

Kazumasa Shimoda

Atsushi Tanaka

Hiroyuki Fukuda

Masaki Takahashi

Hiroyoshi Kodama

Hideo Kubo

Satoshi Inano

Reiko Kondo

Shigeto Suzuki

Minoru Tanaka

Akira Minegishi

Kei Ohishi

Masakazu Fukaya

Takehisa Matsuda

Syunsuke Ohga

A data center system includes: a data center including an electronic device and an air conditioner configured to cool the electronic device; a cooling device including a first cooler configured to cool cooling water to be supplied to the data center by an air blow and a second cooler configured to cool the cooling water by heat exchange; and a control device configured to control the cooling device, wherein the control device is configured to: acquire outside temperature information from a temperature sensor provided outside the data center; calculate cooling water temperature information to be set to the cooling device by adding a cooling temperature difference based on a cooling ability of the first cooler to the outside temperature information; and set the cooling water temperature information to the cooling device.

Data center system, control method of data center system, and recording medium recording control program of data center system

A disclosed management apparatus that manages communication in a network shared by information processing apparatuses of plural users includes: a memory and a processor coupled to the memory. And the processor is configured to: receive, from a first information processing apparatus connected to the network, a first identifier assigned to the first information processing apparatus; receive, from a second information processing apparatus connected to the network, a second identifier assigned to the second information processing apparatus; determine whether a user of the first information processing apparatus coincides with a user of the second information processing apparatus based on the received first identifier and second identifier; and apply first settings to permit communication between the first information processing apparatus and the second information processing apparatus, upon determining that the user of the first information processing apparatus coincides with the user of the second information processing apparatus.

Management apparatus and shared network system

A method includes: receiving a reservation, made by a user from a user terminal, regarding a bandwidth of a line; first determining whether or not a total bandwidth of a bandwidth demanded by the reservation in a time slot related to the received reservation and a guaranteed bandwidth to one or more reserved users exceeds a permissible upper limit value of the line; when the total bandwidth exceeds the permissible upper limit value, calculating a reducible bandwidth based on a bandwidth shortage produced by subtracting the permissible upper limit value from the total bandwidth and statistical information of a use bandwidth consumed by the one or more reserved users; second determining a reduction bandwidth reduced from the guaranteed bandwidth based on the calculated reducible bandwidth; and assigning, by a processor, the determined reduction bandwidth to the bandwidth demanded by the reservation.

Method, apparatus, and storage medium

An air-conditioning apparatus is an air-conditioning apparatus, for an air-conditioning target space in which a rack including a device as a heat-producing object is provided and which is separated by the rack into a cold space and a hot space, that makes return air from the hot space flow in so as to cool the return air and supplies an arbitrary air volume of the supplied air which is obtained by cooling the return air to the cold space by using a supply fan. The air-conditioning apparatus includes a processor. The processor executes a process including conducting control so that a temperature of the supplied air is equal to a prescribed value that is set in advance, and adjusting an air volume of the supplied air by controlling the supply fan so that a temperature of the return air is equal to a target value that is set in advance.

Air-conditioning apparatus

A housing for electronic equipment includes a fan and a plurality of coolant channels in a passage of a cooling fluid introduced by the fan. A passage width defined by a cooling member blocking the passage, the member being one of the plurality of coolant channels closer to the fan, is smaller than a passage width defined by a cooling member blocking the passage, the member being one of the plurality of coolant channels farther away from the fan.

Housing for electronic equipment with variable coolant channel widths

A perpendicular magnetic recording medium, including a soft-magnetic backing layer; and a recording layer provided over the oft-magnetic backing layer. There is provided a magnetic flux slit layer between the soft-magnetic backing layer and the recording layer. The magnetic flux slit layer includes a soft-magnetic layer having a generally columnar structure generally isolated magnetically in an in-plane direction. The magnetic flux slit layer contains at least one selected from the group consisting of Co, Fe, Ni, a Co alloy, a Fe alloy, and a Ni alloy, as a major component, and the magnetic flux slit layer further contains any one selected from the group consisting of Ta, Cu, Pb, Cr, and Re.

Perpendicular magnetic recording medium and magnetic storage apparatus

The magnetic recording medium comprises a backing layer including a first magnetic layer, a second magnetic layer which is formed over the first magnetic layer, is ferrimagnetic and is magnetized in a direction opposite to the first magnetic layer, and a third magnetic layer formed over the second magnetic layer and magnetized in a direction opposite to the second magnetic layer; and a perpendicular magnetic recording layer for recording magnetic information formed over the backing layer. Antiferromagnetic exchange interconnection is formed between the first magnetic layer and the second magnetic layer and between the second magnetic layer and the third magnetic layer.

Recording medium having multiple magnetic layers

A perpendicular magnetic recording medium at least comprises a perpendicular magnetic recording layer and a backing layer backing the perpendicular magnetic recording layer. The backing layer has an in-plane magnetization and is formed of a ferrimagnetic material having a compensation temperature in the vicinity of a recording/reproducing temperature in which reproducing of magnetic information is made from the perpendicular magnetic recording layer. A magnetic storage apparatus for recording and reproducing magnetic information using the perpendicular magnetic recording medium is also disclosed.

Magnetic recording medium for perpendicular recording

A vertical magnetic recording medium includes a substrate, a soft magnetic backing layer formed on the substrate, a magnetic flux confinement layer formed on the soft magnetic backing layer, an intermediate layer formed on the magnetic flux confinement layer, and a recording layer of a vertical magnetization film formed on the intermediate layer. The magnetic flux confinement layer has a plurality of soft magnetic parts each formed along a track region of plural track regions and a non-magnetic parts formed between adjacent track regions. The intermediate layer is formed of a non-magnetic material and is formed so as to cover a surface of the soft magnetic part and the non-magnetic parts.

Vertical magnetic recording medium, magnetic recording apparatus and manufacturing method of a vertical magnetic recording medium

Magnetic recording medium for perpendicular recording and magnetic storage apparatus using the same

A magnetic recording medium includes a positioning magnetic layer having magnetism and is used for positioning the optical head. The magnetic recording medium recording method includes a first step of moving the magnetic head to a predetermined position on the magnetic recording medium, a second step of supplying a positioning magnetic field Hr from the magnetic head to the positioning magnetic layer for positioning the optical head, and a third step of outputting positioning light Pr from the optical head for positioning the optical head, producing a magnetic optical effect with respect to the positioning magnetic layer magnetized by the positioning magnetic field Hr, and controlling the optical head so as to face a position of the magnetic head based on a detection result of the magnetic optical effect.

Magnetic recording medium having magnetic decoupling ability

A perpendicular magnetic recording medium including a substrate, a soft-magnetic backing layer formed on the substrate, a magnetic recording layer having perpendicular magnetic anisotropy formed on the backing layer, and a leakage magnetic field control layer having ferrimagnetism formed on the magnetic recording layer. The leakage magnetic field control layer is exchange-coupled to the magnetic recording layer antiferromagnetically or ferrimagnetically to thereby suppress the influence of leakage magnetic fields from the backing layer and the magnetic recording layer and reduce the medium noise.

Information recording medium and information storing device

A magneto-optical recording medium has a configuration such that information recorded can be read from a region smaller than a beam spot by applying an external magnetic field and directing a light beam in reproducing. The magneto-optical recording medium includes a magnetic recording layer for recording and holding information, a magnetic reproducing layer provided on one side of the magnetic recording layer on which the light beam is incident, a nonmagnetic layer provided on another side of the magnetic recording layer opposite to the magnetic reproducing layer, and a magnetic assist layer provided on the nonmagnetic layer. The magnetic assist layer has a coercive force smaller than an external magnetic field applied in recording or reproducing information.

Magneto-optical recording medium possessing a magnetic assist layer

An MO disk includes a readout layer, an intermediate layer and a recording layer each of which is made of a rare earth-transition metal amorphous material. The MO disk also includes a fourth magnetic layer formed on the recording layer and made of a rare earth-transition metal amorphous magnetic material containing Gd. The fourth magnetic layer has a rare earth metal magnetization-dominant composition and an axis of easy magnetization oriented longitudinally at room temperature. The axis of easy magnetization is changed to be oriented perpendicularly to the fourth magnetic layer as the temperature of the fourth magnetic layer rises to the Curie temperature of the fourth magnetic layer.

Magneto-optical recording medium comprising four magnetic layers

A magneto-optical recording medium which is adapted to realize a partial ROM with remarkable facility in providing software. The magneto-optical recording medium comprises a transparent substrate, a volatile magnetic recording layer formed on the transparent substrate and having a Curie temperature approximately equal to or lower than a temperature raisable in a recording/reproducing apparatus of a user, and a nonvolatile magnetic recording layer formed on the volatile magnetic recording layer and having a Curie temperature higher than the temperature raisable in the recording/reproducing apparatus of the user; wherein the nonvolatile magnetic recording layer is not initialized and is retained in a state immediately after manufacture of the medium.

Growing community of inventors

Kawasaki, Japan

Toshio Sugimoto