Storage control device and control method

A control method that causes a storage device, which has stored thereon original data of an update target and updated data of the original data of the update target in different storage areas, to execute a process comprising:

• storing, using a controller, in a first storage area, the original data of the update target that is to be updated by a host;
• dividing, using the controller, the updated data into a plurality of pieces of data including addresses of the first storage area and to integrate a plurality of pieces of divided updated data into a group of pieces of data including successive addresses in the first storage area;
• writing, using the controller, to the second storage area the plurality of pieces of divided updated data integrated into the group of pieces of data including successive addresses in the first storage area;
• and
• storing, using the controller, in a third storage area, mapping information in which the address of the first storage area is associated with the address of the second storage area that stores the plurality of pieces of divided updated data integrated into the group of pieces of data including successive addresses in the first storage area.

A computer-readable recording medium having stored therein a control program for causing a storage device, which has stored thereon original data of an update target and updated data of the original data of the update target in different storage areas, to execute a process comprising:

• storing, in a first storage area, the original data of the update target that is to be updated by a host;
• dividing the updated data into a plurality of pieces of data including addresses of the first storage area and to integrate a plurality of pieces of divided updated data into a group of pieces of data including successive addresses in the first storage area;
• writing to the second storage area the plurality of pieces of divided updated data integrated into the group of pieces of data including successive addresses in the first storage area;
• and
• storing, in a third storage area, mapping information in which the address of the first storage area is associated with the address of the second storage area that stores the plurality of pieces of divided updated data integrated into the group of pieces of data including successive addresses in the first storage area.