Storage control apparatus and storage control method

A storage control method in which a computer executes a process comprising:

• generating, by a processor, according to difference information that represents a difference between stationary points in a volume that represents a management unit for a storage area and that is associated with a plurality of generations, aggregate information in which the difference information for the plurality of generations is aggregated;
• associating, by the processor, the aggregate information with a state of the volume at an oldest stationary point;
• and
• associating, by the processor, update information for a volume that has been updated from a state of the volume at a latest stationary point.

A non-transitory computer-readable recording medium having stored therein a storage control program causing a computer to execute a process comprising:

• generating, according to difference information that represents a difference between stationary points in a volume that represents a management unit for a storage area and that is associated with a plurality of generations, aggregate information in which the difference information for the plurality of generations is aggregated;
• associating the aggregate information with a state of the volume at an oldest stationary point;
• and
• associating update information for a volume that has been updated from a state of the volume at a latest stationary point.