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 |
20130024730 | DISK CONTROL APPARATUS, METHOD OF DETECTING FAILURE OF DISK APPARATUS, AND RECORDING MEDIUM FOR DISK DIAGNOSIS PROGRAM - A disk control apparatus includes a processor, and a memory coupled to the processor in which executes a process as follows. The process includes diagnosing whether or not a failure has occurred on each of a plurality of disk apparatuses, determining, when the failure has occurred, whether or not the failure is a pre-defined failure, and excluding from diagnosis targets, when the failure is the pre-defined failure, a disk apparatus group included in a RAID together with a failed disk apparatus that is determined to have the pre-defined failure in the plurality of disk apparatuses. | 01-24-2013 |
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 |
20130047029 | STORAGE SYSTEM, STORAGE CONTROL APPARATUS, AND STORAGE CONTROL METHOD - A storage control apparatus manages a plurality of storage devices which belong to an RLU such that data is made redundant between different storage devices. If a first storage device fails, a rebuild controller executes a rebuild process to store the same data as recorded in the first storage device in a spare storage device. When the rebuild controller executing the rebuild process has failed in reading out data from a second storage device, a data recovery controller restarts the first storage device, and reads out data to be stored in the spare storage device from the restarted first storage device. | 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 |
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 |
20140173337 | STORAGE APPARATUS, CONTROL METHOD, AND CONTROL PROGRAM - A storage-apparatus has a plurality of storage-devices and a controller for controlling data read from and write to the plurality of storage-devices, the controller includes a determination-unit and a restore-processing-unit, when a new storage-device has failed in a non-redundant state being a redundant group state without redundancy, in which some of the storage-devices had failed out of the plurality of storage-devices, the determination-unit configured to determine whether execution of compulsory restore of the redundant group is possible or not on the basis of a failure cause of the plurality of failed storage-devices, and if the determination unit determines that the execution of compulsory restore of the redundant group is possible, the restore-processing-unit configured to incorporate a plurality of storage-devices including a newly failed storage-device in the non-redundant state into the redundant group and to compulsorily restore the storage-apparatus to an available state. | 06-19-2014 |
20140289493 | CONTROL DEVICE, STORAGE DEVICE, AND COMPUTER-READABLE RECORDING MEDIUM HAVING STORED THEREIN CONTROL PROGRAM - A control device including a processor. The processor configured to allocate a data area of a memory device to a plurality of memory areas of data blocks of a first size; allocate identical data blocks of the first size to a plurality of the data areas of the memory device; manage management information indicating a data storing state of the plurality of memory areas of data blocks of the first size in each data area; determine, based on the management information regarding a plurality of data areas allocated with respect to a data block to be written, one data area from the plurality of data areas; and generate write data of a second size, which is different from the first size, including data of the data block to be written and write the write data in the one data area. | 09-25-2014 |
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 |