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US 8,015,442 B2Granted
Anomaly notification control in disk array
AssigneeHitachi, Ltd.
InventorSeiki Morita
Life of this patent
Estimating the term…
Abstract
In a storage device incorporating a plurality of kinds of disk drives with different interfaces, the controller performs sparing on a disk drive, whose errors that occur during accesses exceed a predetermined number, by swapping it with a spare disk drive that is prepared beforehand.
Claims24
A disk array system comprising:
- a controller, adapted to be coupled to a host computer, and receiving data from the host computer;
- a plurality of first disk drives, coupled to the controller, and being related to a first RAID group and storing data received from the controller, each of the first disk drives comprising a first type interface;
- if the disk array system comprises a first type spare disk drive comprising the first type interface, the controller performing sparing of at least one of the plurality of first disk drives related to the first RAID group to the first type spare disk drive;
- and
- if the disk array system does not comprise the first type spare disk drive, the controller performing sparing of the at least one of the plurality of first disk drives related to the first RAID group to a second type spare disk drive comprising a second type interface.
2 more elements
A control method of a disk array system, the control method comprising:
- receiving data from a host computer;
- storing data received from the host computer in a plurality of first disk drives, the plurality of first disk drives being related to a first RAID group, each of the first disk drives comprising a first type interface;
- if the disk array system comprises a first type spare disk drive comprising the first type interface, performing sparing of at least one of the plurality of first disk drives related to the first RAID group to the first type spare disk drive;
- and
- if the disk array system does not comprise the first type spare disk drive, performing sparing of the at least one of the plurality of first disk drives related to the first RAID group to a second type spare disk-drive comprising a second type interface.
2 more elements
A computer program stored in a computer readable storage medium and executable by a storage apparatus, the computer program comprising:
- code for receiving data from a host computer;
- code for storing data received from the host computer in a plurality of first disk drives, the plurality of first disk drives being related to a first RAID group, each of the first disk drives comprising a first type interface;
- code for performing, if the disk array system comprises a first type spare disk drive comprising the first type interface, sparing of at least one of the plurality of first disk drives related to the first RAID group to the first type spare disk drive;
- and
- code for performing, if the disk array system does not comprise the first type spare disk drive, sparing of the at least one of the plurality of first disk drives related to the first RAID group to a second type spare disk drive comprising a second type interface.
2 more elements
Dependencies are inferred from the claim text.