Data consistency checking method in remote backup system

Aimed at the fact that the original data of the remote backup system changes continuously,a data consistency checking method based on summation digest is proposed.This method can not only solve the problem that the traditional consistency checking requires the interruption of the backup task,but also ensure the continuity of the backup task,speedy check the data consistency of the local server and remote backup center,improve the efficiency of the consistency checking.The experiment proved that the accuracy is the same as that of interrupting the backup task to check the consistency of the original data on the local server and the backup data on the remote backup center.