Patent ID: 8677089

Claim:
A storage apparatus comprising: an associating unit that associates a first memory area in which data to be copied are stored and a second memory area of a destination storage apparatus to which the data are copied; a copying control unit that controls copying the data from the first memory area to the second memory area associated; a detecting unit that detects a start or an end of the copying; an access control unit that controls access to the first memory area and the second memory area based on a result of detection performed by the detecting unit, wherein the associating unit associates the second memory area and a third memory area of a backup storage apparatus to which the data is backed up, the detecting unit detects an end of copying the data from the first memory area to the third memory area to which the second memory area is associated, and the copying control unit controls the destination storage apparatus to copy updated data to the third memory area when the end of copying from the first memory area to the third memory area is detected, the updated data being obtained by accessing the second memory area and updating the data.