Hitachi, Ltd.

3m Innovative Properties Company

Hitachi Computer Peripherals Co., Ltd.

Taiyo Yuden Co., Ltd.

Minnesota Mining and Manufacturing Company

Hitachi Industrial Equipment Systems Co., Ltd.

Takashi Amano

Kenji Yamagami

Yasunori Kaneda

Yoichi Mizuno

Noriko Nakajima

Patricia M Savu

Shoji Kodama

Toru Tanaka

Marc Dudley Radcliffe

Steven J Martin

Daniel C Snustad

Michael P Keyes

Yuichi Taguchi

Yoshiki Kano

Yuichi Yagawa

Kenta Shiga

Yoshimasa Masuoka

Hajime Mori

Akihisa Nagami

Kazuya Maekawa

Kengo Imamura

Hironori Okado

Hisahiro Yasuda

Keizo Kawamura

Naoto Kobayashi

Tatsuya Imaizumi

Tetsuyuki Suzuki

Mitsuhiro Imai

Tsunehisa Nakamura

Stephen R Ebner

Arthur J Ellsworth

Nobuyoshi Kawasaki

Gene A Sjerven

Toshihiko Watase

According to one embodiment, a control program extracts variable names of the control program and generates an address map file and a header file. An information program is generated using the generated header file. The information program accesses a shared storage area using the address map file through a shared access unit and accesses data using shared variables.

Industrial controller and data sharing method of industrial controller

It is an object to use a storage region in an efficient manner and maintain a performance of a storage system. A volume group GRincludes reference volumes, andand source volumes, andthat derive from the reference volumes. Each of the volumes stores only the difference data from a volume that is a parent thereof. A volume that is a cause of a problem is moved or copied from a pool of the momentto other pool. A configuration of a volume group is modified.

Storage system and performance management method of storage system

A computer system is provided that is capable of reducing an administrator's operational errors by connecting a new server to a SAN and automating a SAN boot setting, and capable of lightening the administrator's task of checking for a wrong connection by detecting a wrong connection made when a new server is connected to an SNW connection device. Once a new server connected to a PnP SAN starts with a boot program obtained from a boot management server, the new server transmits configuration information on the new server to a resource management server. In response to a request from the resource management server, a storage device refers to PnP SAN information to transmit SAN information on a storage network connection device to which the new server is connected. The resource management server determines to add the new server to a resource group on the basis of the SAN information and requirement information. The resource management server sets the storage device and the new server for SAN-booting the new server.

Computer system, and method for managing resource pool information

One of a backup apparatus and a storage system performs control to store backup data in a storage system which belongs to an organization and/or location different from an organization and/or location to which a storage-target storage system for original data belongs, based on information (P) and/or (Q) below: (P) information relating to original data, and information relating to backup data, which is a copy of the original data; (Q) information indicating an organization and/or location to which each storage system belongs.

Computer system for controlling backups using wide area network

To restrict data transmission to a mobile terminal according to a location of the mobile terminal when the mobile terminal requests data to a second computer, the mobile terminal does not log in the second computer. A communication method for a communication system having a first computer and the second computer, the first computer sends location information of the mobile terminal to the second computer, and the second computer controls data which is to be sent to the first computer according to an access right based on a predetermined location information by referring to received location information. Thereby, it can be controlled data sent to the mobile terminal.

Data access control system and method according to position information of mobile terminal

A first computer is provided that executes a plurality of virtual machines (VMs), a storage device, and a second computer is provided that applies patches to OSs (operating systems) operating upon the VMs to the VMs. The storage device holds storage regions (golden images (GIs)) that store data of the OSs operating upon the VMs at certain time instants, a storage region that stores patches applied to the OSs of the VMs after those certain time instants, and snapshots of the GIs. Patches applied to the OSs of the VMs accessed in the snapshots are stored in the storage pool. The second computer selects, as a GI to be a source of acquisition of snapshots, a GI to which are applied patches of a combination that can be created from patches applied to the OS of some VM, and deletes patches that are patches applied to the selected GI, and that moreover, among the patches applied to that VM, are stored in the storage pool.

Method and device for eliminating patch duplication

Efficiently utilizing the bandwidth of the host interface unit even after restoration. A controller manages a storage area of a disk as multiple logical units (LUs), as well as measures the bandwidth used by each host interface unit as load information, stores the load information at the time of the backup, and at the time of the restoration, restores the backup data in logical units in the restoration destination and, with reference to the load information, distributes the paths connecting the logical units in the access source and the logical units in the restoration destination to the host interface units.

Storage subsystem and its data processing method, and computer system

This content provision system includes a creation unit for associating the first content data and the second content data, assigning a common content ID to the first content data and the second content data, and creating management information of all content data configured from the first content data and the second content data based on the attribute information of content data, an analysis unit for analyzing hobby information of a user based on reference information for deciding hobby information of a user, a search unit for searching content data that coincides with the analyzed hobby information of a user based on the management information of all content data, and a provision unit for providing to a user content information that coincides with hobby information of a user based on the searched content data.

Content provision system and content provision method

A second storage system (SS) comprises a plurality of tapes, a first storage device capable of performing random access at a rate higher than the tapes, and a virtual storage device emulating the first storage device. A first storage system (SS) comprises a second storage device and a third storage device that has the virtual storage device mapped therewith. The SSreserves a storage space on the first storage device and reads data from the tape corresponding to the virtual storage device into the storage space. The SSperforms copying between the second storage device and third storage device and, in this process, sends a command for access generated in the third storage device to the virtual storage device. When receiving the Access Command corresponding to the virtual storage device, the SSaccesses the storage space.

Storage control method and system for performing backup and/or restoration

The invention is directed to a load sharing method in a computer system including a first storage subsystem, a host computer, and a management computer. In the computer system, the first storage subsystem creates a plurality of first logical units from a storage area of a disk drive group, and the host computer creates a logical storage area configured by a plurality of virtual logical units respectively corresponding to the first logical units. A communications path is set between the host computer and each of the first logical units configuring the logical storage area. The load sharing method includes the steps of: monitoring, by the first storage subsystem, a load of its own; and changing, by the first storage subsystem, the communications paths between the host computer and the first logical units based on the monitoring result of the load. With such a configuration, provided is a computer system high in extensibility not deteriorating the performance at the limit of the system after load sharing among the storage subsystems.

Load sharing method and system for computer system

A storage system maintains a journal and a snapshot of one or more data volumes. Two journal entry types are maintained, an AFTER journal entry and a BEFORE journal entry. Two modes of data recovery are provided: 'fast' recovery and 'undo-able' recovery. A combination of both recovery modes allows the user to quickly recover a targeted data state.

Method and apparatus for data recovery system using storage based journaling

The correspondence between a plurality of virtual storage positions in a virtual volume for logically holding a snapshot image of a main volume in which data elements transmitted from a higher-level device are written and a plurality of address information elements indicating a plurality of actual storage positions of a plurality of data elements constituting the snapshot image is managed. In the initial backup, all the data elements stored in all the actual storage positions indicated by a plurality of address information elements are backed up, then storage positions where a difference has occurred between the virtual volume and the backup destination storage device is managed, and in the next and subsequent backups, data elements on the storage positions specified from the address information elements corresponding to the differentially managed storage positions are backed up.

Storage system and storage control method

When using an acrylic resin with a refractive index of 1.494, for example, the structure of the Fresnel lens is such that in a segment where a deviation angle of 19.5&#xb0; or less is required, refraction-only prisms which do not cause any reflections are used, while in a segment where a deviation angle of 31.0&#xb0; or larger is required, single-step total reflection prisms in which light is totally internally reflected once and then refracted are used and, in a segment where a deviation angle not smaller than 19.5&#xb0; but not larger than 31.0&#xb0; is required, two-step total reflection prisms in which light is totally internally reflected twice and then refracted are used.

Fresnel lens

To provide a technique by which, if the number of active disk groups in a storage device is restricted, an appropriate logical volume in the storage device can be used. A management apparatus manages a storage device provided externally. The management apparatus obtains management data indicating which of a plurality of disk groups included in the storage device is active, from the storage device. In addition, the management apparatus executes predetermined processing with reference to the management data in order to utilize a logical volume belonging to a disk group in the storage device while ensuring that the number of active disk groups in the storage device does not exceed an upper limit value.

Growing community of inventors

Yokohama, Japan

Takashi Amano