| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of restoration failure by preliminarily or as quickly as possible solving any media error existing in a normal disk drive. SOLUTION: In an array controller 20, an HDD failure predicting part 24 predicts the failure of each of HDDs 11-0 to 11-2 configuring a logical disk 10. When the failure of any of the HDDs 11-0 to 11-2 is predicted, an HDD health confirming part 25 performs health confirmation processing for confirming the presence/absence of any media error by inspecting the contents of any HDD other than the HDD whose failure has been predicted among the HDDs 11-0 to 11-2. When any media error has been detected by the HDD health confirming part 25, a medial error restoring part 26 restores the deficiency of the data of the place where the media error has been generated by using the data or redundant data of all the HDDs excluding the HDD where the media error has been generated among the HDDs 11-0 to 11-2. COPYRIGHT: (C)2007,JPO&INPIT
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