Abstract: A second storage system (SS2) 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 (SS1) comprises a second storage device and a third storage device that has the virtual storage device mapped therewith. The SS2 reserves 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 SS1 performs 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 SS2 accesses the storage space.

Abstract: 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.

Abstract: Provided is a method of saving power consumed by a storage system that is connected to a host computer via a network, including a disk device for storing to be written data requested by the host computer, and controllers that control access to the disk device, in which the controllers each have an interface connected to the network, a processor connected to the interface, and a memory connected to the processor, in which the processor measures a load of the storage system, and in which the processor controls power to the controllers in accordance with the measured load of the storage system.

Abstract: 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.

Abstract: A disk array system of the type that each controller has an independent and dedicated cache. The disk array system can change control of a desired volume between desired controllers without suspending the system. When volumes are taken over between controllers, a switch-source controller de-stages data of a subject volume on the data cache to a storage subject disk to maintain the disk content reflection (coherency). Even if each controller has an independent and dedicated cache, a desired volume can be taken over between desired controllers without suspending the system. Each controller has a configuration manager which stores the controller number of a switch-destination controller to allow automatic volume take-over and automatic control by the original controller.

Abstract: A storage control device uses write management information that manages locations of the occurrence of writing in one or more first storage devices in order to specify one or more locations where writing has occurred, and backs up one or more data elements stored in one or more specified locations to a second storage device. In order to perform a restore operation, write management information at the time of a backup is stored, and data elements stored in the second storage device are restored to one or more locations specified from the write management information at that time of backup, or to one or more new locations specified from new write management information indicating one or more new locations corresponding to the one or more locations.

Abstract: A computer system including plural computers, a management console for installing a program in the computers and a storage subsystem coupled to each computer and management console. The storage subsystem includes a first storage unit shared by the computers and plural second storage units corresponding to the computers. The first storage unit stores a file related to each installed program and an installer program for installing a program. The second storage units each store an install agent and a control file accessed by the install agent. The management console includes an install manager for starting each install agent by switching on power to a corresponding computer. Upon starting, the install agent starts the installer program based on the control file. The installer program reads a related file from the first storage unit, and transfers it to the second storage unit of the corresponding computer, thereby installing the program.

Abstract: Differential management information that is information representing the difference between a logical volume and a sequential device group after a full backup is updated in response to an update of the logical volume. Partial data that are data representing the difference between the logical volume and sequential device group are specified by using the updated differential management information, information necessary for restoration that is necessary to restore the data group located in the updated logical volume by using the partial data is recorded in the sequential device group, and the partial data are backed up from the updated logical volume into the sequential device group.

Abstract: One or more random access-type storage devices comprise a volume group and a journal volume. The volume group contains a volume pair configured from a primary volume and a secondary volume. Whenever data is received from a host device, this received data is written in the primary volume, a journal containing the write sequence of the data and the data is produced, and the journal is written in a journal volume. A plurality of journals accumulated in a journal volume are written in a sequential access-type storage device. Based on the write sequence recorded in each of the plurality of journals recorded in the sequential access-type storage device, the data of the journals is restored to the primary volume for storing the data and to a secondary volume from which the volume pair is configured.

Abstract: The present invention provides a rubber composition for a sidewall or a rubber composition for a clinch apex capable of reducing rolling resistance and electric resistance and improving crack resistance, and a tire prepared by using the rubber compositions. The rubber composition for a sidewall and the rubber composition for a clinch apex of the present invention comprise 1.0 to 7.5 parts by weight of a compound having oxyethylene units based on 100 parts by weight of a diene rubber. The tire of the present invention is prepared by using the rubber compositions.

Abstract: To provide a rubber composition for breaker having balanced properties among rigidity, heat resistance, adhesiveness, humid aging adhesion and elongation, and a pneumatic tire having a breaker layer or a belt layer comprising the rubber composition. A rubber composition for breaker comprises 55 to 65 parts by weight of carbon black, 5 to 15 parts by weight of silica, 3.5 to 4.5 parts by weight of sulfur, at least 0.08 part by weight of cobalt, a resorcinol resin and a methylene donor based on 100 parts by weight of a rubber component containing a natural rubber and/or an isoprene rubber as a main component.

Abstract: In order to enable an area of each logical volume to be expanded while continuously using the logical volume and to integrate separate logical volumes in a single continuous area, a storage has logical volume control means for controlling the construction of a logical volume, a logical volume number map in which logical volume construction information is described, and copy means for copying the logical volume. By allowing two or more inner logical numbers to be described per external logical number in the logical volume number map, improved flexibility in combining the logical volumes in the storage is achieved. By copying a plurality of separate logical volumes into a physical continuous area by the copy means, the logical volumes are integrated.

Abstract: A plurality of virtual disks that emulate disk devices and a controller for controlling data access commands from a host are provided. The controller reserves a disk space on one or more disk devices with respect to a designated virtual disk among the plurality of virtual disks, reads data to the disk space from a target tape medium constituting a tape medium that corresponds with the designated virtual disk among the plurality of tape media and, when a data access command to the designated virtual disk is received from the host, performs data access to the disk space, not to the target tape medium 132.

Abstract: A second storage system (SS2) 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 (SS1) comprises a second storage device and a third storage device that has the virtual storage device mapped therewith. The SS2 reserves 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 SS1 performs 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 SS2 accesses the storage space.

Abstract: 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.

Abstract: Power consumption of a storage system is reduced by shutting down disk drives when they are not needed. A storage system having an interface connected to a host computer, a controller connected to the interface and having a processor and a memory, and disk drives storing data that is requested to be written by the host computer, comprises a log storage area to temporarily store data that is requested to write by a write request sent from the host computer and a plurality of data storage areas to store the data requested to write by the write request. The controller provides the data storage areas as a plurality of RAID groups constituted of the disk drives. The controller moves data from the log storage area to the data storage areas on a RAID group basis.

Abstract: The present invention provides a rubber composition for a breaker cushion suppressing exothermic heat and lower of rubber properties and a tire using the same. A rubber composition for a breaker cushion, comprising 25 to 35 parts by weight of carbon black having an iodine adsorption amount of 70 to 120 mg/g and 0.5 to 2.0 parts by weight of a resorcin condensate or a modified resorcin condensate based on 100 parts by weight of a rubber component, and a tire having a breaker cushion using the same.

Abstract: Provided is a method of saving power consumed by a storage system that is connected to a host computer via a network, including a disk device for storing to be written data requested by the host computer, and controllers that control access to the disk device, in which the controllers each have an interface connected to the network, a processor connected to the interface, and a memory connected to the processor, in which the processor measures a load of the storage system, and in which the processor controls power to the controllers in accordance with the measured load of the storage system.

Abstract: It is an object to achieve higher performance of input/output processing in a storage system. In a disk controller of a storage system having disk devices and a disk controller that controls input/output of data to/from the disk devices and that accepts requests from a superordinate device, there are provided a memory, a superordinate IF and a subordinate IF (1201), for the exclusive use of each MPU.

Abstract: In the case in which data in a storage system A is remotely copied to a storage system B, it is not taken into account whether the data of the remote copy is WORM data. In the case in which a setting is made such that data stored in a volume in the storage system A is copied to a volume in the storage system B, storage system A judges whether an attribute to the effect that data can be referred to and can be updated or to the effect that data can be referred to but cannot be updated is added to the volume in the storage system A. Then, if the volume is a volume to which the attribute to the effect that data can be referred to but cannot be updated is added, such attribute is added to the volume in the storage system B.