Patent application number | Description | Published |
20080301151 | COMPUTER SYSTEM AND DATABASE MANAGEMENT METHOD USING THE SAME - A pre-fetch server, which is connected to a DB server running a DBMS and to a storage apparatus storing DB data, stores information required for judging whether or not a pre-fetch is effective. Judgment on whether or not the pre-fetch will be effective is performed when a pre-fetch I/O is issued. If the pre-fetch server judges that the pre-fetch will be effective, it issues the pre-fetch I/O to the storage apparatus. | 12-04-2008 |
20090112798 | COMPUTER SYSTEM AND METHOD FOR REDUCING POWER CONSUMPTION OF STORAGE SYSTEM - A disk rotation control part for controlling the rotations of a plurality of disk devices is provided. The configuration is such that a disk of a disk device for which an access will not be generated is rotated at a second rate of speed, which is faster than 0, and slower than a first rate of speed, which is the rotation speed at access time. DB management information comprises information denoting which DB schema inside a DB is stored in which location. The disk rotation control part, based on a query plan of a query received by the DBMS, and DB management information, specifies the storage location of a DB schema to be accessed when this query is processed, and rotates a disk of the disk device comprising the specified storage location at a first rate of speed. | 04-30-2009 |
20090112894 | Method of reducing storage power consumption by use of prefetch and computer system using the same - Provided is a computer system including: a computer running as a DB server; a storage system including a plurality of disk drives for storing data; and a management module, in which: at least one of the plurality of disk drives stores data of a DB schema written by the computer; the management module specifies the DB schema to be accessed based on a received query, transmits, to the storage system, an instruction to copy at least a portion of the data of the specified DB schema from the disk drive to a memory, and transmits, to the storage system, an instruction to control an rpm of the disk drive that stores the data of the specified DB schema; and the storage system controls the rpm of the disk drive based on the instruction. Accordingly, power consumption of the storage system can be reduced even if installed disks increase in number. | 04-30-2009 |
20090125568 | DATABASE RECOVERY METHOD APPLYING UPDATE JOURNAL AND DATABASE LOG - A database recovery method including a computer and a storage system, in which: the storage system includes a disk drive for storing data; the disk drive includes a data volume, a snapshot volume, a database log for storing an update log, and an update journal for storing update information of the data volume; a recovery point for indicating an end point of a range to which the update journal is to be applied and a starting point of a range to which the database log is to be applied is recorded to recover the data volume; and when the database is to be recovered, the update journal is applied to the snapshot volume up to the recovery point, the snapshot volume after the update is switched to the data volume, and the database log after the recovery point is applied to the data volume that is set by switching. | 05-14-2009 |
20100107161 | Method of Improving or Managing Performance of Storage System, System, Apparatus, and Program - A computer system including a server computer providing plural virtual servers, a management computer, and a storage system having plural storage controllers, providing plural logical units. The server computer controls I/O processing of each virtual server according to the I/O priorities for the virtual servers to arbitrate I/O processing performance between the virtual servers. Cooperative settings between the server computer and the storage system are made or information about the storage system corresponding to a virtual server with which cooperative configurations are made is displayed. | 04-29-2010 |
20100275203 | STORAGE MANAGEMENT SYSTEM AND STORAGE MANAGEMENT METHOD IN VIRTUALIZATION ENVIRONMENT - The management computer creates a connection between a virtual computer and a logical volume of a storage apparatus based on the application management information that stores a connection relationship between an application program and an I/O adapter, before a server computer provided with a hypervisor that logically divides the computer resources that include a CPU, a memory, and an I/O adapter and that operates them as an independent virtual computer starts an application program that has been stored into the storage apparatus on the virtual computer. | 10-28-2010 |
20110307678 | STORAGE APPARATUS, STORAGE SYSTEM - An object of the present invention is to provide a storage apparatus which can maintain a performance even if an unused storage area is not released. | 12-15-2011 |
20120144112 | MANAGEMENT COMPUTER AND VOLUME CONFIGURATION MANAGEMENT METHOD - The configuration of volumes provided by a plurality of storage apparatuses with an external connection function is optimized. | 06-07-2012 |
20130086270 | MULTI-CLIENT STORAGE SYSTEM AND STORAGE SYSTEM MANAGEMENT METHOD - An aspect of the invention is a multi-client storage system comprising a management computer including a processor and a memory, for allocating resources of a plurality of storage apparatus to a plurality of clients, the management computer comprising: a receiving unit for receiving conditions for a client to which a new resource is to be allocated; a determining unit for determining whether the new resource is securable under the received conditions without changing resources allocated to existing clients and conditions for the volumes for each of the existing clients; and an allocation unit for securing, when it is determined that the new resource is securable under the received conditions, the new resource under the received conditions for the client in the plurality of storage apparatus and allocating the new resource to the client. | 04-04-2013 |