STORAGE APPARATUS, STORAGE MANAGEMENT METHOD, AND STORAGE MANAGEMENT PROGRAM

PROBLEM TO BE SOLVED: To provide a storage apparatus, a storage management method, and a storage management program capable of performing a backing-up operation under the condition that a host computer is in operation. SOLUTION: The storage apparatus 1 is provided with a cache memory 20; a storage device 30 to store data; a data copy unit 12 to copy the data stored in the storage device 30 to a copy storage device 40; and a control unit 11 wherein, when writing data in the storage device 30, if the data copy unit 12 is executing a detached copy which does not allow data rewriting during copying, the data to be written in the storage device 30 is stored in the cache memory 20, and after completing the detached copy, the data stored in the cache memory is stored in the storage device 30. COPYRIGHT: (C)2010,JPO&INPIT