| 摘要 |
In the present invention, a management server manages, as virtual data areas, the physical data areas that storage devices have. Moreover, the management server includes a unit. Based on an access request received from each server, the unit issues, to the corresponding storage devices, an instruction of reading out the data onto caches from disks. Also, each storage device, which has received the instruction, includes each unit for reading out the data onto each cache in accordance with the instruction.
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