Patent ID: 7107404

Claim:
A cache control method in a data processing system comprising a storage apparatus and computers which executes a first program and a second program, the storage apparatus having a cache memory with a first area and a second area and a disk unit which stores data of the cache memory, the method comprising the steps of: writing data into the first area of the cache memory corresponding to area identification information included in a data storage request generated by executing the first program in response to an input of the data storage request, the data storage request comprising the area identification information for identifying the first area; writing the data into the second area of the cache memory corresponding to area identification information included in a data storage request generated by executing the second program in response to an input of the data storage request, the data storage request comprising the area identification information for identifying the second area; and copying the data stored in the second area of the cache memory to the first area of the cache memory in response to an input of a copy request for causing the data in the second area of the cache memory to be reflected in the first area of the cache memory.