Patent ID: 7877361

Claim:
A management device for a storage device having a data volume which is a logical volume to which data constituting a write target transmitted by a higher-level device are written, a base volume which is a data image of the data volume, a journal storage region which accumulates write data to the data volume as a journal, and a storage control section which recovers the data volume by applying the journal to the base volume, the management device comprising: a data protection term acquisition section which acquires a data protection term which is a term in which the recovery of the data volume is ensured from a predetermined duration for which a predetermined time is taken as a reference point; a control section which executes control using the data protection term; an input section for accepting an input of a value used to determine the duration; and a duration determination section for determining the duration by using the value thus input, wherein the input section accepts a smaller data amount than a data amount of the journal volume constituting the journal storage region as the value; and the duration determination section determines, as the duration, time required until a write amount per unit time with respect to the journal volume reaches an input data amount on the basis of the write amount.