| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a disk control apparatus capable of performing highly reliable mirroring control on a storage unit comprised of a semiconductor memory and a storage unit comprised of a magnetic disk. <P>SOLUTION: After the lapse of a data hold term in an SSD derived from the number of times of data rewrite in the SSD, a disk control apparatus acquires the number of times of data rewrite in the SSD and, when the acquired number of times of rewrite increases from the acquired number of times of data rewrite in the SSD neither equal to nor more than a predetermined value, sets to read data from an HDD. <P>COPYRIGHT: (C)2012,JPO&INPIT |
