Patent application number | Description | Published |
20130019122 | STORAGE DEVICE AND ALTERNATIVE STORAGE MEDIUM SELECTION METHODAANM Daikokuya; HidejirouAACI KawasakiAACO JPAAGP Daikokuya; Hidejirou Kawasaki JPAANM Ikeuchi; KazuhikoAACI KawasakiAACO JPAAGP Ikeuchi; Kazuhiko Kawasaki JPAANM Watanabe; TakeshiAACI KawasakiAACO JPAAGP Watanabe; Takeshi Kawasaki JPAANM Kubota; NorihideAACI KawasakiAACO JPAAGP Kubota; Norihide Kawasaki JPAANM Igashira; AtsushiAACI YokohamaAACO JPAAGP Igashira; Atsushi Yokohama JPAANM Kobayashi; KenjiAACI KawasakiAACO JPAAGP Kobayashi; Kenji Kawasaki JPAANM Tsukahara; RyotaAACI KasawakiAACO JPAAGP Tsukahara; Ryota Kasawaki JP - A storage device includes: a determination unit to determine an operation of a storage group including a plurality of storage medium based on an access operation on a logical volume serving as an access target of the storage group; and a selection unit to select based on the operation of the storage group, when a failure of at least one of the plurality of storage medium is detected, an alternative storage medium from the at least one of the plurality of storage medium. | 01-17-2013 |
20130047028 | STORAGE SYSTEM, STORAGE CONTROL DEVICE, AND STORAGE CONTROL METHOD - A control device manages a plurality of storage devices so that data to be recorded is redundantly recorded in different storage devices. An error monitoring unit monitors an occurrence of an error in each of the plurality of storage devices to register information indicative of error occurrence conditions in an error information storage unit for each storage device. When the use of one of the plurality of storage devices is stopped, a rebuild controller determines a timing to perform rebuild processing based on past error occurrence conditions in the storage devices other than the one storage device of the plurality of storage devices by referring to information registered in the error information storage unit. | 02-21-2013 |
20130054907 | STORAGE SYSTEM, STORAGE CONTROL APPARATUS, AND STORAGE CONTROL METHOD - A storage system including first storage devices constituting a first logical storage area, second storage devices constituting a second logical storage area; and a storage control apparatus. The storage control apparatus manages the first and second logical storage areas so that the data stored in the first and second logical storage areas have redundancy, and parity data for the data stored in the second logical storage area are stored in parity storage areas arranged in part of the second storage devices. When part of the first storage devices constituting part of the first logical storage area fail, the storage control apparatus generates part of the data stored, before the failure, in the part of the first storage devices, and stores the generated part of the data in at least part of the second parity storage areas in the second logical storage area. | 02-28-2013 |
20130054913 | STORAGE SYSTEM, AND APPARATUS AND METHOD FOR CONTROLLING STORAGE - A rebuild control unit splits a rebuild process into partial processes and instructs an access processing unit to execute the partial processes. In the rebuild process, data identical to data recorded in a first storage device that constitutes RLU #1 is generated based on data read from, among storage devices constituting RLU #1, storage devices other than the first storage device and written to a spare storage device included in a storage system. Each partial process includes a combination of an operation of reading data from a split range created by splitting a data readout target range into fixed-size intervals and an operation of writing data in another storage device based on the data read from the split range. In response to the instruction from the rebuild control unit to execute the multiple partial processes, the access processing unit executes the instructed partial processes in parallel. | 02-28-2013 |
20130067165 | DISK ARRAY DEVICE AND DISK ARRAY DEVICE CONTROL METHOD - A disk array device includes hard disks from which RAID groups are configured. Therein, a volume setting unit sets one or more used areas. A data check control unit determines, on the basis of the state into which the used areas have been set, which areas in the RAID groups are subject to a diagnosis. A data check execution unit that executes a cyclical diagnosis on the areas determined, by the data check control unit, to be those subject to a diagnosis. | 03-14-2013 |
20130151771 | DISK ARRAY DEVICE, CONTROL DEVICE AND DATA WRITE METHOD - A disk array device includes: a plurality of disk devices including a strip that stores divided data or a parity; a control device to divide the stripe for each of the plurality of disk devices into the divided data having a size of the strip and write the divided data; and a memory to store new data that corresponds to the divided data stored in the strip, wherein the control device detects whether or not the new data is discrete and performs a first write operation or a second write operation when the new data is discrete. | 06-13-2013 |
20130246862 | INFORMATION PROCESSING APPARATUS AND MAINTENANCE METHOD OF AN INFORMATION PROCESSING APPARATUS - An information processing apparatus includes: processing units to perform information processing, the processing units being capable of continuing the information processing even if a processing unit in the processing units stops its operation; and a control unit to perform a potential failure detection process of restarting the processing units one by one and outputting information requesting replacement or repair of a processing unit that is not restarted up. | 09-19-2013 |
20130262762 | STORAGE SYSTEM AND STORAGE CONTROL METHOD - A storage system includes a storage device having a command reordering function and a storage control apparatus that controls access to the storage device. Commands are issued to the storage device for reading or writing data. The storage control apparatus sets an upper limit to write data size or read data size specified in the commands during a predetermined period after a timeout of an issued command, so as to make it less likely for the storage device to postpone some of the issued commands. | 10-03-2013 |
20140009850 | CONTROL METHOD AND SYSTEM - A control method of controlling a disk storage unit, includes: obtaining, by a computer, for a plurality of sectors allocated on a disk included in the disk storage unit, track identifying information that identifies a track to which sectors belong, in a first order starting from a first start sector; and storing, if first track identifying information obtained in a first sector of the plurality of sectors does not match second track identifying information obtained in a second sector of the plurality of sectors immediately before the first sector, a data length from the first start sector to the second sector in a storage unit. | 01-09-2014 |
20140075240 | STORAGE APPARATUS, COMPUTER PRODUCT, AND STORAGE CONTROL METHOD - A storage controller detects a failure of any one of storage units making up a RAID group. The storage controller incorporates plural hot spares HS into the RAID group, as substitute storage units for the detected failed storage. The storage controller restores the memory contents of the failed storage unit onto each of the hot spares incorporated into the RAID group. Upon detecting replacement of the failed storage unit in the RAID group, the storage controller incorporates into the RAID group, a replacement storage unit that has replaced the failed storage unit. | 03-13-2014 |
20140089730 | STORAGE CONTROL DEVICE AND METHOD FOR CONTROLLING STORAGES - A processor copies first information stored in a first storage to a backup volume. The processor stores management information when a first piece of the first information is updated to second information after the copy. The processor executes, when a failure occurs in the first storage, first restoration based on the management information and reference information stored in reference storages other than the first storage. The first restoration restores the second information to a spare storage. The processor executes second restoration based on the management information and the reference information. The second restoration restores third information to the spare storage. The processor stops the second restoration when a failure occurs in a second storage while the second restoration is being executed. The processor executes third restoration based on the first information stored in the backup volume and the management information. The third restoration restores fourth information to the spare storage. | 03-27-2014 |
20140250149 | IDENTIFYING ELEMENT RELATIONSHIPS IN A DOCUMENT - An information processing apparatus includes a text mining section configured to perform text mining on text data acquired from the outside and to output extracted information; an identification section configured to search a development database storing elements constituting a product and the relationship among the elements by using the information extracted by text mining to identify an element related to the information; and a notification section configured to notify the identified element to a user, a program for use in the information processing apparatus. | 09-04-2014 |
20140289478 | CONTROL DEVICE, AND STORAGE SYSTEM - A control device that controls a reading process of information stored in a unit storage area under control of the control device and a unit storage area under control of a different control device in a distributed manner, the control device includes a processor. The processor executes a procedure including determining whether or not the reading process is a sequential reading process that reads information stored in a unit storage area under control of the control device in an order of logical addresses and whether or not a reading target area of the sequential reading process includes a last address in the unit storage area, and reporting to the different control device control information related to a sequential reading process including the last address determined by the first determination unit. | 09-25-2014 |
20140292765 | AGGREGATING GRAPH STRUCTURES - The present invention provides a display apparatus adapted to display a plurality of graph structures each of which is made up of a plurality of elements, by aggregating the plurality of graph structures into a single graph structure as well as provides a display method of the display apparatus and a program used for the display apparatus, the display apparatus including: an acquisition hardware unit adapted to acquire a plurality of graph structures; a distinguishing hardware unit adapted to distinguish the plurality of elements between unchanged elements which have not changed in the plurality of graph structures and changed elements which have changed with transition between/among the plurality of graph structures; an aggregating hardware unit adapted to aggregate the plurality of graph structures; and a display hardware unit adapted to display the aggregated graph structure such that the unchanged elements and the changed elements will be identifiable. | 10-02-2014 |
20140380090 | STORAGE CONTROL DEVICE AND STORAGE CONTROL METHOD - A storage control device includes a processor. The processor is configured to detect medium error regions in a first memory device. A medium error has occurred in each of the medium error regions. The processor is configured to conduct, on a first medium error region, data recovery processing for recovering data stored therein. The processor is configured to conduct copy processing for copying first data of a peripheral region of the first medium error region from the first memory device to a second memory device other than the first memory device. | 12-25-2014 |
20150074452 | STORAGE CONTROL DEVICE AND METHOD FOR CONTROLLING STORAGE DEVICES - A storage control device includes a storage unit and a processor. The storage unit is configured to store therein a first score calculated for a first storage device. The processor is configured to add, upon detecting an event occurred in the first storage device, points corresponding to the event to the first score. The processor is configured to determine upon the addition, based on the first score and a second score, whether a sign of failure of the first storage device is detected. The second score is calculated for a first redundant unit of storage devices including the first storage device. | 03-12-2015 |