Patent ID: 8041959
Filing Date: 2011-10-18
Classification: G06F

Abstract:
1. A computer system comprising a plurality of computers; a plurality of storage systems; and a network coupled to at least one of the plurality of computers and the plurality of storage systems, wherein: the plurality of computers include a first computer and a second computer; the plurality of computers each comprise a first interface coupled to the network, a first processor coupled to the first interface, and a first memory coupled to the first processor; the plurality of storage systems include a first storage system and a second storage system; the plurality of storage systems each comprise a second interface coupled to the network, a second processor coupled to the second interface, and a second memory coupled to the second processor; the first storage system comprises a first storage area for storing data written by the second computer; the second storage system comprises a second storage area for storing data written by the second computer; the first storage system is configured to: the computer system holds backup information including encryption keys and identifiers of the plurality of storage systems associated with the encryption keys; and the backup information includes at least the first encryption key, an identifier of the first storage system associated with the first encryption key, the second encryption key, and an identifier of the second storage system associated with the second encryption key, wherein: the first computer is configured to transmit at least one of the encryption keys included in the backup information and at least one of the identifiers of the plurality of storage systems, which is associated with the at least one of the encryption keys; and the first storage system is configured to: