DATA PROCESSING METHOD AND DEVICE

摘要

Disclosed is a data processing method, comprising: calculating fingerprint data of each data block of a file to be backed up and fingerprint data of the data block after an offset of an address of each data block of the file to be backed up is progressively increased; sending the fingerprint data of each data block of the file to be backed up and the fingerprint data of the data block after the offset of the address of each data block of the file to be backed up is progressively increased to a server, for comparison with fingerprint data of each data block of a file stored by the server and fingerprint data of the data block after an offset of each data bock of the stored file is progressively increased; and sending changed data to the server according to a comparison result sent by the server. The data de-duplication rate can be improved.