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Data backup method

A data backup and backup technology, which is applied to the redundancy in computing for data error detection and response error generation, etc., can solve problems such as consumption and multiple system resources, and save system resources, time and system resources. Effect

Active Publication Date: 2010-10-06
WISTRON CORP
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AI Technical Summary

Problems solved by technology

However, compared with the previous backup method that directly overwrites the entire changed data, since the differential backup program needs to find out the changed blocks on the data, it needs to consume more system resources
In addition, when there are many data changes, the time spent using the differential backup program to back up is much longer than the previous time spent directly using the entire changed data to overwrite

Method used

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Examples

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Embodiment Construction

[0014] Please refer to figure 1 , which shows a flowchart of a data backup method according to an embodiment of the present invention. Data backup methods Use different methods to back up data according to the proportion of data changes. When the ratio of data change is higher than a specific ratio, all the data is directly overwritten to the backup space for backup. On the contrary, when the ratio of data modification is not higher than the above-mentioned specific ratio, only the data with modification will be backed up again through a differential backup procedure. Data backup method 100 comprises the following steps:

[0015] When a backup command for backing up a target folder to a backup folder is received (step 110 ), a difference list between the target folder and the backup folder is generated (step 120 ). Wherein, when applying the data backup method 100 under the Linux operating system, the difference list (step 120) can be generated by using the dry-run of rsync...

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Abstract

The invention relates to a data backup method, specifically comprising the following steps: generating a target folder and a difference list between the backup folders when a backup instruction which is used for backing up the target folder to the backup folder is received; calculating a difference proportion that at least one difference data of the difference list occupies the target holder; judging whether the difference proportion is more than a specific proportion; overwriting at least one target data of the target folder to the backup folder when the difference proportion is more than the above special proportion; backing up the target folder to the backup folder; and when the difference proportion is not more than the special proportion, utilizing a difference backup program to back up the target folder to the backup folder. The data backup method of the invention overwrites the data in the target folder to the backup folder, saves time and system resources needed in finding modified data, also can utilize the differentiated backup program, and saves the time and system resources in backing up the unmodified data.

Description

technical field [0001] The invention relates to a data backup method, and in particular to a method for backing up data according to the data change ratio. Background technique [0002] With the increasing popularity of computers, the amount of data that people store in computers is also increasing. However, when the operating system is damaged, the hard disk is damaged, or other software and hardware failures of the computer occur, a large amount of previously stored data will often be destroyed. In addition, when the damaged data is data related to the operation of the operating system, the user needs to reinstall and configure the operating system, which causes troubles for the user. [0003] Therefore, the data is generally backed up in advance, and then when the data is damaged, the previously backed up data can be used to restore the computer. Among them, the existing technology is to complete the data backup by storing the data in other storage spaces. When the dat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14
Inventor 陈剑航
Owner WISTRON CORP
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