Anomaly notification control in disk array
First Claim
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1. A disk array system comprising:
- a controller, adapted to be coupled to a host computer, and having a cache memory and storing data, received from the host computer, to the cache memory;
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.
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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.
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Citations
26 Claims
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1. A disk array system comprising:
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a controller, adapted to be coupled to a host computer, and having a cache memory and storing data, received from the host computer, to the cache memory; 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A control method of a disk array system including a controller, the control method comprising:
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storing data, received from a host computer, to a cache memory of the controller; storing data stored in the cache memory to 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. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 25)
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17. A computer program stored in a non-transitory computer readable storage medium and executable by a storage apparatus, the computer program comprising:
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code for storing data, received from a host computer, to a cache memory of a controller; code for storing data stored in the cache memory to 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. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 26)
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Specification