Disk array system and method for controlling disk array system
First Claim
1. A disk array system, comprising:
- a controller which controls writing of data to a plurality of storage regions and reading of data from said storage regions; and
a plurality of disk drives having said storage regions and having a plurality of first type disk drives each of which has a first type interface and a plurality of second type disk drives each of which has a second type interface,wherein said controller controls whether an examination of data stored in said disk drives is performed based on whether data to be examined is stored in said second type disk drives in which the examination is performed or in said first type disk drives in which the examination is not performed, andwherein said examination performed by said controller is a process for indicating whether data stored in said second type disk drives is in a false state or not.
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Accused Products
Abstract
A disk array system having first and second housings and a controller for controlling the first and second housings. Fiber channel hard disk drives are received in the first housing, and serial ATA hard disk drives are received in the second housing. When reading data stored in a serial ATA hard disk drive in the second housing, the controller reads a plurality of pieces of data including the data to be read and parity data for the plurality of pieces of data from all the hard disk drives of an RAID group to which the hard disk drive storing the data to be read belongs. Thus, the controller examines whether the plurality of pieces of data including the data to be read are written in the hard disk drives with erroneous contents or not.
172 Citations
14 Claims
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1. A disk array system, comprising:
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a controller which controls writing of data to a plurality of storage regions and reading of data from said storage regions; and a plurality of disk drives having said storage regions and having a plurality of first type disk drives each of which has a first type interface and a plurality of second type disk drives each of which has a second type interface, wherein said controller controls whether an examination of data stored in said disk drives is performed based on whether data to be examined is stored in said second type disk drives in which the examination is performed or in said first type disk drives in which the examination is not performed, and wherein said examination performed by said controller is a process for indicating whether data stored in said second type disk drives is in a false state or not. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A disk array system, comprising:
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a controller which controls writing of data to a plurality of storage regions and reading of data from said storage regions; and a plurality of disk drives having said storage regions and having a plurality of first type disk drives each of which has a first type interface and a plurality of second type disk drives each of which has a second type interface, wherein said controller controls whether an examination of data stored in said disk drives is performed based on data stored in said second type disk drives, and wherein said examination performed by said controller is a process for indicating whether data stored in said second type disk drives is in a false state or not. - View Dependent Claims (14)
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Specification