| 摘要 |
A primary storage system: receives indivisible data from a host computer, which is an assemblage of data which is not separable in order to maintain consistency and which is generated by the host computer executing an application; stores the received indivisible data; transmits a plurality of journals to an auxiliary storage system, which respectively include a plurality of instances of data wherein the indivisible data is segmented into instances of a prescribed size; and transmits journal information, which signifies that each of the plurality of journals is transmitted, to a management computer. The management computer: receives the journal information from the primary storage system; determines whether all of the journals corresponding to the indivisible data have been transmitted to the auxiliary storage system, on the basis of the journal information; and if the result of the determination is that this is the case, stores the times at which all of the journals corresponding to the indivisible data are transmitted as data recoverability times which signify times whereat the data which can be recovered with respect to the indivisible data is stored. |
