APPARATUS AND METHOD FOR DISTRIBUTE AND STORE FILE DATA

摘要

PURPOSE: A file data distribution storage device and a method thereof are provided to efficiently save a storage space wasted in a duplication method by maintaining chunks in the duplication method when the access frequency to data is high and converting the data into a parity method when the access frequency to the data is becoming lower. CONSTITUTION: A first stripe management unit(210) divides data of a file into chunk units to maintain the same as a first stripe including a duplicated data chuck. A second stripe management unit(220) divides the data into the chunk units to maintain the same as a second stripe including a parity chunk and the data chunk. A mixed stripe management unit(230) mixes the first and the second stripes to maintain the same. A first stripe converting unit(240) converts the first stripe into the second stripe to maintain the same. The second stripe converting unit(250) converts the second stripe into the first stripe to maintain the same. A data recovery unit recovers the data by determining the malfunction of a data server storing the data chunk. [Reference numerals] (210) First stripe management unit; (220) Second stripe management unit; (230) Mixed stripe management unit; (240) First stripe converting unit; (250) Second stripe converting unit; (AA) Control unit