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File matching method in computer network data backup

A computer network and backup file technology, applied in the field of network information, can solve problems such as back failure, and achieve the effect of data storage safety and integrity

Inactive Publication Date: 2007-10-10
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
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Problems solved by technology

But once the file name is changed and the file path is changed, this mirroring method will fail

Method used

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Embodiment Construction

[0035] In the NTFS file system, the file is the most important file under the NTFS file system through the master file table (MFT, Master File Table), which records the status of all files and directories, similar to the FAT+FDT under the FAT file system function, and stores much more file attributes than FAT+FDT. Each file on an NTFS volume has a 64bit unique identifier called a file reference number (File Reference Number). The file reference number consists of two parts: one is the file number, and the other is the file serial number. The file number is 48 bits, corresponding to the position of the file in the MFT. In Windows, each file or MFT record is assigned a 16-byte object ID (GUID). The length of the GUID and the algorithm used by Windows to generate the GUID can ensure that each GUID is unique. There is an $O index of the \$Extend\$Objid metafile in the MFT, which is sorted by GUID and is the index of the object ID. In this index, the object ID attribute of the fil...

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Abstract

A method for matching file in data back-up of computer net work includes carrying out differential back-up and completer back-up as per back-up interval time selected by user after first time of completer back-up is carried out, synthesizing this time of increment back-up sent locally and last time of differential back-up to be remote differential back-up and enabling to carry out remote differential back-up by only requiring small transmission increment back-up of network band width.

Description

technical field [0001] The invention relates to a method used in the technical field of network information, in particular to a method for file matching in computer network data backup. Background technique [0002] Data backup is a very important data security strategy. Data is backed up to tape devices or other devices through backup software. able to work. From the perspective of backup schemes, there are three main types: full backup, incremental backup, and differential backup, which are generally used in combination. In data backup, how to keep the match between the backup original file and the backup file plays a vital role in the whole backup process. [0003] File matching in data backup refers to establishing a connection between the file to be backed up (hereinafter referred to as the original file) and the backup file, so that when a backup or update backup is required, the original file corresponding to the backup can be accurately found, and relevant informat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14G06F17/30
Inventor 邹恒明邱丽琴姚琪陈惟康
Owner SHANGHAI JIAO TONG UNIV
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