| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an abnormality determining apparatus for securely detecting an abnormal HDD, based on an amount of increase of NON MEDIUM ERROR COUNT for a unit number of accesses. Ž<P>SOLUTION: In a RAID apparatus 100, an error determining processing unit 430c determines whether an HDD is normal based on an error determining condition obtained from an amount of increase of NON MEDIUM ERROR COUNT and the number of accesses memorized on a control table 420b, and detects the HDD with abnormal performance. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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