STORAGE SYSTEM AND DEDUPLICATION CONTROL METHOD

摘要

Provided is a storage system, which: carries out a primary deduplication process (first-stage deduplication process), which segments a file into large chunks and carries out a deduplication upon the large chunks, irrespective of file type; and, with respect to a secondary deduplication process (secondary deduplication process), which segments at least one of the large chunks into small chunks and carries out the deduplication upon the small chunks, does not carry out said process if the file type satisfies a prescribed condition and does carry out said process if the file type does not satisfy the prescribed condition.