| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent data destruction due to the restoration of a storage device having an erroneous cryptographic key. <P>SOLUTION: In a computer system equipped with a plurality of computers and a plurality of storage systems, the first storage system is provided with a first storage region, and the second storage system is provided with a second storage region. The first storage system is configured to encrypt the first data by using a first cryptographic key, and to write the first data in the first storage region, when receiving the write request of first data in the first storage region, and to encrypt the second data by using the second cryptographic key, and to transmit the write request of the encrypted second data in the second storage region, when receiving the write request of second data in a third storage region. The computer system is configured to store the first cryptographic key, the identifier of the first storage system associated with the first cryptographic key, the second cryptographic key, and the identifier of the second storage system associated with the second cryptographic key. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
