A network backup system and backup method

Abstract

The invention discloses a networking backup system which comprises a document uploading module, a document receiving module, a storage index module, a document recording module, a magnetic disk storage module and a document caching module, wherein the document uploading module is used for calculating a MD5 value of a document and transmitting the document from a client to a server; the document receiving module is used for receiving the document content uploaded by the document uploading module and the MD5 value calculated by the document uploading module and storing the document record; the storage index module is used for recording the MD5 characteristic information of different documents for indexing by the document receiving module; the document recording module is used for recording the original recording information of the uploading document; the magnetic disk storage module is used for storing the document content; the document caching module is used for caching the compressed files of the frequently downloaded applications. The networking backup system can utilize a document fingerprint technique to eliminate the redundant documents in the document storage on the server side and can save the server-side magnetic disk space. The invention also discloses a networking backup method.

Description

technical field [0001] The invention belongs to the technical field of computers, in particular to a system and method for backing up client files. Background technique [0002] At present, with the emphasis on the secure storage of corporate electronic files, [0003] In order to achieve the purpose of timely collecting files on personal office computers of employees and storing them centrally and safely, more and more enterprises and institutions have begun to use an automatic networked backup system, which can automatically detect file changes on client computers and Timely transfer it to the file warehouse of the server for storage, so as to achieve the purpose of timely and reliable backup. [0004] With the electronic informatization of enterprises and institutions becoming more and more complete, and with the increasing number of Internet application users, more and more electronic files need to be stored in modern computer systems, and the storage requirements have ...

AI Technical Summary

Problems solved by technology

Such compressed files enter the backup system and will consume a large amount of storage space

First of all, each file in these compressed files is often an electronic file that already exists in the personal computer. These electronic files will generally enter the backup system, and after compression, a large number of electronic files that have entered the backup system will be in the new compressed file. The file is repeatedly stored on the server (although it is in compressed form); secondly, this kind of compression often has a certain degree of randomness and temporaryness, and it is obviously impossible for the operator who distributes these files to share a batch of electronic files The exact same directory is selected for compression every time, and some files in the directory to be compressed may change at any time, which often results in a compressed file even if the same batch of directories and files are to be distributed. Often there is also a slight difference, which is considered a completely new file into the backup system

[0010] (3) The above analysis shows that the compression behavior that can be seen everywhere will cause considerable waste to the storage of the backup system, especially when users often compress the contents of larger files

However, compressed files cannot be easily excluded from the backup sequence, because, in some cases, compressed files may not be a temporary file, but may be an important archive file

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