| 摘要 |
PURPOSE: A data recovering method based on Internet parity, a device thereof, and a system thereof are provided to generate parity data from a plurality of terminals and to recover the data of a terminal requesting recovery. CONSTITUTION: A plurality of terminals generate parity data by logically adding data of a server with random data. If a terminal requests the recovery of lost data, first recovery data is delivered based on the parity. Second recovery data is delivered to each terminal except for terminal requesting the recovery. The terminal requesting the recovery can recover the lost data by logically adding the first and the second recovery data. [Reference numerals] (110) PCS server; (130) Cloud storage manager; (140) Cloud storage; (AA) Parity cloud service; (BB,CC,DD,120) PCS agent; (EE,FF,GG,HH) Virtual disk; (II) Virtual parity group; (JJ,KK,LL,MM) User storage
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