摘要:
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.
摘要:
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.
摘要:
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.
摘要:
A storage control apparatus manages a plurality of storage devices which belong to a RAID Logical Unit (RLU) such that data is made redundant between different storage devices, where RAID stands for Redundant Arrays of Independent Disks. 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.
摘要:
A control apparatus, coupled to a storage medium via communication links, controls data write operations to the storage medium. A cache memory is configured to store a temporary copy of first data written in the storage medium. A processor receives second data with which the first data in the storage medium is to be updated, and determines whether the received second data coincides with the first data, based on comparison data read out of the storage medium, when no copy of the first data is found in the cache memory. When the second data is determined to coincide with the first data, the processor determines not to write the second data into the storage medium.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
According to an embodiment, a storage apparatus including: a plurality of storage media of which a first RAID is composed, a logical storage area of the first RAID for storing data being set over; a plurality of expansion storage media of which a second RAID is composed; a spare storage medium that is different from in any of the storage media or the expansion storage media; and a configuration control unit that when the spare storage medium is set in the first RAID, sets the logical storage area in the storage media, and when the expansion storage media are set in the storage apparatus, sets the expansion storage media in the second RAID, excludes the spare storage medium that is set in the first RAID, and moves the logical storage area that is set in the first RAID to the second RAID.
摘要:
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.