| 摘要 |
<P>PROBLEM TO BE SOLVED: To propose a disk array device capable of improving access performance. <P>SOLUTION: The disk array device includes: a plurality of semiconductor memories for storing data received from a host computer; a plurality of disk devices for storing the data; and a controller which implements a redundant configuration of the semiconductor memories and the disk devices by RAID 1, and controls reading out of the data from the semiconductor memories or the disk devices. The controller reads out the data from the semiconductor memories and transmits the data read out from the semiconductor memories to the host computer when states of the semiconductor memories and the disk devices are normal or when a state of the semiconductor memories is abnormal and a data area of the semiconductor memories in which the data is stored is completely restored. <P>COPYRIGHT: (C)2012,JPO&INPIT |
