| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a storage system for detecting data due to malfunction in a device only for encryption processing or a device having an encryption function in the case of writing or reading out encrypted data and suitably using a physical data transfer route, and to provide a method for guaranteeing data. <P>SOLUTION: The storage system comprises a host for instructing data reading or writing, a pair of logical volumes corresponding to a pair of virtual devices which are recognized by the host and a device arranged between the host and the pair of logical volumes and having a function for encrypting or decrypting data, and is provided with a route management part for specifying one route for each logical volume from a plurality of data transfer routes existing between the host and the pair of logical volumes in order to transfer encryption data or decryption data which are encrypted/decrypted through the device having the function for encrypting or decrypting the data to the logical volume or the host on the basis of a data reading instruction or a data writing instruction from the host. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
