File data backup method based on Delta increment

Abstract

The invention provides a file data backup method based on Delta increment, which uses the Delta file increment technology to reduce memory space of data, enables a disc to leave more backup space andrealizes that backup data can be kept for longer time and a lot of bandwidth required in off-line storage can be saved. The system structure comprises a Delta Sequence module, a Delta reading module,a Delta merging module, a Delta comparing module and a Delta Processor module; the functions of the modules and the file backup steps are as follows: the Delta Sequence module is used for comparing whether the two files are same or not by comparing files, bytes and Hash, so that the module is the sequencing of a file sequence module, a byte sequence module and a Hash sequence module, and has the function of comparing and filtering, thus rapidly comparing whether the two sequences are same or not by transporting among sequences; the module has the advantages of increasing disc backup use ratio,saving backup space and dealing the challenge faced by data sharp increase when being applied into a data backup system.

Description

technical field [0001] The present invention is a file incremental backup technology, which is generally used in file-based backup systems, and aims to reduce the storage capacity used in the storage system. The "Delta file increment" technology can reduce the stored data to 1 / 10 of the original, so as to allow more backup space, not only can save the backup data on the disk for a longer time, but also save offline storage a large amount of bandwidth required. Background technique [0002] Insufficient storage space has always been a headache for IT personnel, because not only do they need to purchase additional storage devices, but they also have to face various configuration tasks that follow after adjusting the storage architecture. Needless to say, these tasks are complicated and cumbersome. In the process of expanding storage capacity, downtime is more likely to be required, which will seriously affect the normal operation of the enterprise. [0003] One of the reason...

AI Technical Summary

Problems solved by technology

Especially nowadays, some enterprises start to back up to faster disks first, and then back up to tapes and other devices one by one. For enterprises that must complete a large number of backups before going off work on the same day to the next day, disk backup is a good method. The backup is fast and the recovery is fast. It is also fast, but disk backup will undoubtedly speed up the consumption of disk space

[0004] Generally speaking, there are a large number of files and emails in enterprise applications. If all files and data are fully backed up for each backup, it will require a very large storage space

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