Patent application number | Description | Published |
20080201544 | STORAGE SYSTEM - A processor of a storage controller receives an erasure process request relating to data stored in a storage unit, from a host computer, via a data I/O interface, detects a logical storage extent which is different to the logical storage extent allocated to the storage unit and which can be allocated, allocates the logical storage extent thus detected to the storage unit, sends a notification indicating that access to the storage unit is possible, to the host computer which is the source of the request, and then executes erasure of the data in the logical storage extent that is associated with the storage unit forming the erasure object, and sends a data erasure notification to the management computer when the data has been erased. | 08-21-2008 |
20080216086 | METHOD OF ANALYZING PERFORMANCE IN A STORAGE SYSTEM - A method of balancing a load in a computer system having at least one storage system, and a management computer, each of the storage systems having physical disks and a disk controller, the load balancing method including the steps of: setting at least one of the physical disks as a parity group; providing a storage area of the set parity group as at least one logical volumes to the host computer; calculating a logical volume migration time when a utilization ratio of the parity group becomes equal to or larger than a threshold; and choosing, as a data migration source volume, one of the logical volumes included in the parity group that has the utilization ratio equal to or larger than the threshold, by referring to the calculated logical volume migration time, the data migration source volume being the logical volume from which data migrates. | 09-04-2008 |
20080228841 | INFORMATION PROCESSING SYSTEM, DATA STORAGE ALLOCATION METHOD, AND MANAGEMENT APPARATUS - An information processing system includes: information processing apparatuses, each replicating data sent from a host computer according to redundancy designated by the host computer and creating copy data; a first storage system having volume(s) for storing the data and the copy data; and a management apparatus for managing the information processing apparatuses and the first storage system. The information processing system has: an acquisition unit for acquiring volume replication information indicating whether the volumes are to re replicated in volume(s) in a second storage system; a data storage allocation unit for setting, based on the volume replication information, at least one of the information processing apparatuses as an information processing apparatus for storing the data in a volume to be replicated in the second storage system volume; and a transmission unit for transmitting information concerning the information processing apparatus for storing the data to the information processing apparatuses. | 09-18-2008 |
20090013137 | STORAGE SYSTEM AND POWER CONSUMPTION REDUCTION METHOD, AND INFORMATION PROCESSING APPARATUS - In a storage system including: plural information processing apparatuses each of which copies data sent from a host computer to create archive data in accordance with redundancy sent from the host computer; and a storage apparatus having physical disks that store the archive data, the storage apparatus includes a management unit that manages power state information that is information on whether or not the power state of each of the physical disks is “on,” and the information processing apparatuses each include an acquisition unit that acquires the power state information managed by the management unit and a determination unit that determines an information processing apparatus targeted for reading or writing the archive data from among the information processing apparatuses based on the power state information acquired by the acquisition unit. | 01-08-2009 |
20090063872 | MANAGEMENT METHOD FOR ARCHIVE SYSTEM SECURITY - Creating a plaintext index from a text that is extracted from a file presents the risk of a leak of confidential information from the created index. To address this problem, provided is a computer system which has a computer, a storage subsystem coupled to the computer, and a network coupling the computer and the storage subsystem. The computer has an interface coupled to the network, a first processor coupled to the interface, and a memory coupled to the first processor. The storage subsystem has a disk device which stores data. A storage area of the disk device is divided into a plurality of storage areas including, at least, a first storage area and a second storage area. The first processor reads a part of data stored in the first storage area, encrypts the part of data read from the first storage area when the data stored in the first storage area is judged as encrypted data, and writes the encrypted part of data in the second storage area. | 03-05-2009 |
20100049916 | POWER-SAVING-BACKUP MANAGEMENT METHOD - A storage subsystem includes: a controller; a first logical storage area corresponding to a RAID group configured by a plurality of storage devices; and a second logical storage area corresponding to a plurality of the RAID groups each configured by the plurality of storage devices, and storing a copy of data stored in the first logical storage area. In the storage subsystem, the first and second logical storage areas form a copy group, and for starting copying from the first to second logical storage area, the controller performs a mode change, from a power saving mode to a ready mode, to the plurality of storage devices configuring the plurality of RAID groups corresponding to the second logical storage area. With such a storage subsystem, the time can be reduced for activating copy-destination storage devices to which a power saving function is applied, and the copy time is thus favorably reduced. | 02-25-2010 |
20100070731 | STORAGE SYSTEM HAVING ALLOCATION-ON-USE VOLUME AND POWER SAVING FUNCTION - A storage system includes physical memory devices, pool volumes, including real areas, an allocation-on-use (AOU) volume including virtual areas, and a controller allocating a non-allocated real area in a pool including the pool volumes to a virtual area corresponding to an address specified by a writing command when no real area is allocated to the virtual area, and writing data corresponding to the received writing command to the allocated real area. The controller moves data stored in all the real areas in a first pool volume allocated to the AOU volume to a second pool volume, and changes a power consuming status of the physical memory device constituting the first pool volume to a power saving mode after the data has been moved. | 03-18-2010 |
20100106908 | COMPUTER SYSTEM, STORAGE AREA ALLOCATION METHOD, AND MANAGEMENT COMPUTER - Disclosed is a system and method for preventing deterioration in I/O performance of a computer resulted from a use of the same physical disk among different logical volumes. A volume management server | 04-29-2010 |
20120005428 | COMPUTER SYSTEM, STORAGE AREA ALLOCATION METHOD, AND MANAGEMENT COMPUTER - Disclosed is a system and method for preventing deterioration in I/O performance of a computer resulted from a use of the same physical disk among different logical volumes. A volume management server | 01-05-2012 |
20120116595 | INFORMATION APPARATUS AND METHOD OF OPTIMIZING COOLING EFFICIENCY OF AIR CONDITIONER - An air conditioner that cools inside a room wherein a plurality of server apparatuses is arranged, is driven with high efficiency. An information apparatus is communicatively coupled to a plurality of server apparatuses each capable of implementing a virtual server, stores a relation between a cooling performance and a cooling efficiency of an air conditioner that cools a room wherein the server apparatuses are arranged stores a history of load on each of the server apparatuses, the load being generated by a virtual server implemented in the server apparatus, creates a plurality of virtual server allocation patterns having varying allocations of virtual servers to be implemented by the server apparatuses, simulates, for each of the created allocation patterns, an amount of heat generation of each of the server apparatuses on the basis of the history of load on the server apparatus, seeks a cooling performance required to be offered by the air conditioner on a basis of the simulated amount of heat generation, and identifies the allocation pattern with which the cooling efficiency corresponding to the sought cooling performance is not less than a threshold set in advance. | 05-10-2012 |