| 摘要 |
A method and system utilizing backup disk drives in disk array systems. In one aspect, a disk array system includes one or more disk arrays, each including two or more disk drives. The system includes a spare disk drive, and a controller operative to assign the spare disk drive to a particular one of the disk arrays having a type different than the type of the spare disk drive in response to a failure of a disk drive of the particular disk array, such that the spare disk drive stores data from and operates in place of the failed disk drive.
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