| 摘要 |
PROBLEM TO BE SOLVED: To provide a system capable of accessing a file at a high speed for which access performance to the file is uniform regardless of the position inside the file of file data by acquiring the storage position information of the file data based on correspondence information stored in a main memory at the time of accessing the file. SOLUTION: The file is stored in an auxiliary storage device 3 and a list for indicating the correspondence of an address inside the file for indicating the arrangement position inside the file of the file data of a cluster unit and a storage address for indicating the storage position on the auxiliary storage device 3 of the file data is stored together with the file data in the file. Then, by this system, the correspondence information of the storage position information and intra-file position information stored on the auxiliary storage device 3 is read and stored in the main memory 2. Then, at the time of accessing the file, the storage position information of the file data is acquired based on the correspondence information stored in the main memory 2.
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