RAID DEVICE, AND ITS CONTROL DEVICE AND CONTROL METHOD

摘要

A RAID device comprises a priority table (24) for setting priority for each of a plurality of logical volumes, a detection section (20) for detecting an abnormality occurrence storage device, a judgment section (22) for, when the detection section (20) detects the abnormality occurrence storage device, judging whether or not a restoration processing is executed on the basis of the priority of each of the logical volumes set to the priority table (24), and an execution section (23) for, when the judgment section (22) judges that the restoration processing is executed, executing the restoration processing. Thereby, the redundancy of highly important data in the RAID device is preferentially ensured to improve the safety and reliability of the RAID device.