Patent ID: 7139889

Claim:
A computer system comprising: a first computer; a first storage subsystem connected to said first computer; and a second storage subsystem connected to said first storage subsystem, wherein each of said first and second storage subsystem includes a plurality of disk drives, wherein said first computer stores data in a primary volume formed by at least one of said disk drives of said first storage subsystem, wherein a secondary volume is formed by at least one of said disk drives of said second storage subsystem, wherein a pair relationship is established between said primary and secondary volumes such that when said first computer stores data in said primary volume a copy of said data is transmitted to said second storage subsystem and stored in said secondary volume, wherein said first computer transmits configuration information present therein to said first storage subsystem, wherein said configuration information includes mount destination information which indicates a destination at which each volume, formed by at least one of said disk drives of said first storage subsystem, is mounted and capacity information which indicates a capacity of said each volume, wherein said first storage subsystem stores said configuration information at a predetermined location in said first storage subsystem, and transfers data, which contains said configuration information and is stored in said first storage subsystem, to said second storage subsystem, and wherein said second storage subsystem receives the data sent from said first storage subsystem, checks if the received data contains said configuration information, judges whether the configuration information is appropriate for storing in said second storage subsystem, and if the configuration information is judged to be so appropriate, stores said configuration information at a predetermined location in said second storage subsystem to enable said second storage subsystem to mount volumes, each being formed by at least one of said disk drives of said second storage subsystem, according to said configuration information.