Deduplication storage method, deduplication storage controller, deduplication storage system, program
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机译：重复数据删除存储方法，重复数据删除存储控制器，重复数据删除存储系统，程序
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摘要
To solve the problem in which: it is difficult to grasp a free space by file deletion in deduplication storage.SOLUTION: A deduplication storage control device 100 in accordance with the present invention includes: a data writing part 121 configured to divide a storage target file into a plurality of data blocks, in a case where the divided data block is not duplicated with a data block stored in a storage device, store the divided data block into the storage device, and in a case where the divided data block is duplicated with the data block stored in the storage device, perform a process of referring to the data block stored in the storage device as the divided data block; and a data update part 122 configured to store file information specifying a division source file of the data block stored in the storage device in association with said data block, and also calculate a reference ratio representing a ratio at which a certain file is referred to by other files and store it in association with the certain file.SELECTED DRAWING: Figure 13
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