Disk array apparatus and method for controlling the same
First Claim
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1. A storage system, comprising:
- a controller controlling transfer of data to a plurality of storage regions;
a data line, having a first type interface, coupled to said controller and relaying data from/to said controller;
a plurality of first type disk drive units having a plurality of first disk drives which have some of said storage regions and each of first type disk drive units having a second type interface;
a plurality of circuits, each circuit couples one of said first type disk drive units to said data line, said circuits controlling relay of data between said data line and said first type disk drive units, and controlling to separate one of said first type disk drive units and relay of data between said controller and said first type disk drive units without said one of said first type disk drive units if said one of said first type disk drive units has a failure; and
a converter coupled to said data line and converting said first type interface and said second type interface.
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Abstract
An apparatus includes a controller and a plurality of disk drives. The controller has a communication control unit for accepting a data input/output request, a disk controller unit for controlling a disk drive, and a cache memory for temporarily storing data transferred between the communication control unit and the disk controller unit. The plurality of disk drives has different communication interfaces and connected to the disk controller unit to communicate with the disk controller unit.
32 Citations
28 Claims
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1. A storage system, comprising:
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a controller controlling transfer of data to a plurality of storage regions;
a data line, having a first type interface, coupled to said controller and relaying data from/to said controller;
a plurality of first type disk drive units having a plurality of first disk drives which have some of said storage regions and each of first type disk drive units having a second type interface;
a plurality of circuits, each circuit couples one of said first type disk drive units to said data line, said circuits controlling relay of data between said data line and said first type disk drive units, and controlling to separate one of said first type disk drive units and relay of data between said controller and said first type disk drive units without said one of said first type disk drive units if said one of said first type disk drive units has a failure; and
a converter coupled to said data line and converting said first type interface and said second type interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A storage system, comprising:
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a controller controlling transfer of data to a plurality of storage regions;
a data line, having a first type interface, and coupled to said controller and relaying data from/to said controller;
a plurality of first type disk drive units having a plurality of first disk drives which have some of said storage regions and each of first type disk drive units having a second type interface;
a plurality of circuits, each coupled one of said first type disk drive units to said data line, controlling to couple one of said first type disk drive units to said data line in conditions of relaying data in said data line; and
a plurality of converters each coupled to one of said circuits and converting said first type interface and said second type interface and each converters corresponding to one of said first type disk drive units. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A storage system, comprising:
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a controller controlling to transfer data to a plurality of storage regions;
a data line having a first type interface and coupled to said controller and relaying data from/to said controller;
a plurality of first type disk drive units having a plurality of first disk drives which have some of said storage regions and each of first type disk drive units having a second type interface;
a plurality of circuits, each coupled one of said first type disk drive units to said data line, controlling to couple one of said first type disk drive units to said data line in conditions of processing to store data in the other of said first type disk drive units coupled to said data line; and
a plurality of converters each coupled to one of said circuits and converting said first type interface and said second type interface and each converters corresponding to one of said first type disk drive units.
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Specification