Reverse differential archiving method of files-set
Hui Zhao · Jisuanji gongcheng yu sheji · 2011
To improve the efficiency of data recovery in disaster recover system,a file-based reverse differential archiving method is proposed.This method avoids the shortcomings of traditional files-set archiving method,such as the low efficiency to reconstruct and recover the latest data.During backup,the method calculates both the positive and reverse differential files-set,then keeps the complete files-set of the latest archive point.During the recovery,reverse differential files-set is used to reconstruct and recover files based on the time of the reverse.Experiments show that,compared with the traditional archiving method,the method can improve the recover efficiency obviously.