| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suppress processing loads on a controller necessary for encrypting data to be stored inside and outside the storage device of a first storage sub-system. <P>SOLUTION: The first storage sub-system is provided with a first storage device which incorporates an encryption processing part and a controller having an encryption processing part and an access control unit. The access control unit determines which of a first logical volume and a second logical volume data are written to when a write request from a higher order device is processed. When it is determined to be the first logical volume, data to be written are not encrypted by the encryption processing part of the controller but are transmitted to the first storage device corresponding to the first logical volume. Meanwhile, when it is determined that the data are written to the second logical volume, the data to be written are encrypted by the encryption processing part of the controller and are transmitted to a second storage sub-system. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
