| 摘要 |
A first storage system is provided with a first storage device containing an encryption processing unit, and a controller having an encryption processing unit and an access control unit. The access control unit judges whether a writing destination in the case of having processed a write request from an upper-level device is a first logical volume or a second logical volume, and in the case of having judged to be a first logical volume, transmits write data to a first storage device corresponding to the first logical volume without encrypting in the encryption processing unit of the controller, while on the other hand, in the case of having judged the writing destination to be a second logical volume, transmits the write data to a second storage system after having encrypted the target writing data with the encryption processing unit of the controller.
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