Hitachi, Ltd.

Other

Naoto Matsunami

Ikuya Yagisawa

Takashi Oeda

Akira Yamamoto

Yasuyuki Mimatsu

Koji Sonoda

Masahiko Sato

Yoichi Mizuno

Akira Nishimoto

Masayuki Yamamoto

Kenichi Takamoto

Akihiro Mannen

Manabu Kitamura

Kenji Muraoka

Yasunori Kaneda

Yusuke Nonaka

Kiyoshi Honda

Minoru Yoshida

Hiroshi Arakawa

Masaaki Iwasaki

Jun Matsumoto

Junji Ogawa

Masahiro Arai

Hideki Kamimaki

Tetsuya Shirogane

Koichi Kimura

Katsuyoshi Suzuki

Yutaka Takata

Yutaka Kudo

Hidehiko Iwasaki

Kiyotaka Takahashi

Kenichi Tateyama

Takamasa Ishikawa

Yoshinori Nagaiwa

Masatoshi Ichikawa

Naoko Iwami

Kenta Shiga

Yukio Ogawa

Masafumi Nozawa

Tomoki Sekiguchi

Masakatsu Mori

Nobuhiro Yokoyama

Kenichi Tsukiji

Takahiro Nakano

Toshio Nakano

Yoshiki Kano

Hitoshi Akiyama

Mikio Fukuoka

Shizuo Yokohata

Eisaku Saiki

Yutaka Nakagawa

Takuya Mizokami

Takeki Okamoto

Kenichi Miyata

Yasutomo Yamamoto

Junichi Hara

Takao Sato

Shunji Kawamura

Shintaro Ito

Tomohiro Yoshihara

Ryusuke Ito

Takashi Horiuchi

Takuji Ogawa

Kouji Sonoda

Akira Fujibayashi

Kazuhisa Fujimoto

Toshimitsu Kaku

Takatoshi Kato

Kouji Arai

Terumi Takashi

Naoki Watanabe

Hiromi Matsushige

Kyosuke Achiwa

Hirokazu Ikeda

Shoichi Miyazawa

Kazunori Iwabuchi

Tsuguji Tachiuchi

Minoru Kosuge

Hirotoshi Akaike

Shuji Ohno

Hideki Miyasaka

Osamu Kunisaki

Kaushik Triyambaka Mysur

Satoshi Minoshima

Shinichi Kishima

Hidemi Baba

Masahiro Takano

Jiang Zhu

Tetsuya Ohno

Nobuhiro Yokohama

Takayoshi Iltsuka

Yasuhiro Shimura

Masayuki Kan

A computer system including a management computer for managing the entire system, an integral apparatus, and a high-level connecting device for connecting the management computer and the integral apparatus is designed so that the management computer retains integral apparatus internal configuration information, configuration information about an integral apparatus to be introduced, that indicates the configuration of the integral apparatus that may possibly be introduced to the system, and lifetime information indicating lifetime of the integral apparatus; obtains connectivity guarantee information indicating whether connectivity between the computer and the storage apparatus is guaranteed or not; selects an integral apparatus to be removed from the system by referring to the lifetime information; selects an integral apparatus to be introduced to the system by referring to the integral apparatus internal configuration information, the configuration information about the integral apparatus to be introduced, and the connectivity guarantee information.

Computer system and its renewal method

A method and system that provides detouring services to passengers and transportation operators. Transportation operators send data indicating prior uses of the operator to the passengers' mobile device and the system on the mobile device compiles the data to form travel patterns of the passenger. The travel patterns are assigned a probability indicating the frequency the travel pattern is used by the passenger. When a disruption of a service of an operator occurs, a detouring service provides detour suggestions to the passengers and travel demand changes to the operators. In another approach, an in-station display displays suggested detour routes based on the top destinations of stranded passengers and the passenger's mobile phones are not used to display or perform detouring.

Privacy protected public transit data mining method and system for effective passenger detouring

This invention includes an application server for executing an application and transmitting the execution results to a terminal or other such device connected to a network, and a management server for allocating the application and data on an application server and a storage device, respectively, wherein the management server reallocates the application execution site using: a procedure for obtaining device location information from a device via an application server and selecting, from the location information, an application server that will be the application migration destination; a procedure for indicating the migration-destination application server to the migration-source application server; and a procedure for migrating the application and the data between the application servers.

Information processing system, management server group, and server management program

The storage system includes a disk controller for receiving write commands from a computer, and a plurality of disk devices in which data is written in accordance with the control of the disk controller. The size of the first block which constitutes the data unit handled in the execution of the input/output processing of the data in accordance with the write command by the disk controller is different from the size of the second block which constitutes the data unit handled in the execution of the input/output processing of data by the plurality of disk devices. The disk controller issues an instruction for the writing of data to the disk devices using a third block unit of a size corresponding to a common multiple of the size of the first block and the size of the second block.

Storage system

A file system including: a first type storage medium; a second type storage medium; and a processor providing a file system using a first area in the first type storage medium and a second area in the second type storage medium, wherein the processor manages whether metadata is permitted to be stored in each of the first area and second area, stores a first file and first metadata of the first file in the first area, which is managed to permit storing metadata, migrates the first file stored in the file system to the second area, which is managed not to permit storing metadata, and changes the first metadata stored in the first area to point to a location of the first file in the second area.

Arrangements for managing metadata of an integrated logical unit including differing types of storage media

This invention provides a user or an operator with a management apparatus or method for displaying logical connection information between an interface connected to a computer and a switch and a storage system or a logical unit in the storage system in a virtual storage system, wherein the switch receives a first access request from said computer, converts said first access request to a second access request to one of said plural storage systems, and sends said second access request to one of said plural storage systems or one logical unit.

Method and system of collection performance data for storage network

The storage system includes a plurality of first disk devices, a plurality of second disk devices, in which a lifetime of the plurality of second disk devices is different from a lifetime of the plurality of first disk devices, and a controller coupled to the plurality of first disk devices and the plurality of second disk devices. The controller configures a first logical unit by the plurality of first disk devices and a second logical unit by the plurality of second disk devices, provides the first and the second logical units to a host computer, and manages a first remaining available time of the first logical unit and a second remaining available time of the second logical unit, on logical unit basis.

Storage system for holding a remaining available lifetime of a logical storage region

One code (a compressed redundant code) is created based on a plurality of first redundant codes, each created on the basis of a plurality of data units, and this compressed redundant code is written to a nonvolatile storage area. This compressed redundant code is used to restore either a data element constituting a multiple-failure data, or a first redundant code corresponding to the multiple-failure data, which is stored in an unreadable sub-storage area of a partially failed storage device, and to restore the data element constituting the multiple-failure data which is stored in a sub-storage area of a completely failed storage device, based on the restored either data element or first redundant code, and either another data element constituting the multiple-failure data or the first redundant code corresponding to the multiple-failure data.

A storage device is provided with a file I/O interface control device and a plurality of disk pools. The file I/O interface control device sets one of a plurality of storage hierarchies defining storage classes, respectively, for each of LUs within the disk pools, thereby forming a file system in each of the LUs. The file I/O interface control device migrates at least one of the files from one of the LUs to another one of the LUs of an optimal storage class, based on static properties and dynamic properties of each file.

Storage device

To provide a storage apparatus in which a plurality of drives in a unit are separately treated and the unit can be easily exchanged for another unit even when RAID groups are freely composed. The storage apparatus includes a plurality of drive cases in each of which a plurality of units are detachably mounted, each of the units including a plurality of drives that are detachably, and a controller case in which a disk control section is provided, wherein the disk control section comprises a RAID group creation section for creating a RAID group using the plurality of disks and an exchange indicating section for giving a notice that a unit is ready to exchange after rebuilding or copying of data in disks included in the unit at the time of exchange of the unit.

Disk array including plural exchangeable magnetic disk unit

Growing community of inventors

Hayama, Japan

Naoto Matsunami