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Data backup method, node and data backup system

A data backup and node technology, which is applied in the direction of data error detection and response error generation in electrical digital data processing and calculation, and can solve the problem of consuming bandwidth between data centers

Inactive Publication Date: 2017-03-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the above operation process, a large amount of data needs to be transmitted between data centers, which consumes the bandwidth between data centers

Method used

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  • Data backup method, node and data backup system
  • Data backup method, node and data backup system
  • Data backup method, node and data backup system

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Embodiment Construction

[0019] The technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention.

[0020] Such as figure 2 As shown, in the cloud environment, the data center is an integrated IT application environment formed by the concentration of data. It is the provider center of various IT application services and the carrier of the cloud. Generally, a data center is composed of computing equipment, network equipment, and storage equipment, and may also be composed of servers and networks that include storage functions. Data centers communicate through the network. Wherein, the network is used for communication within the data center and between data centers. Specifically, the data centers may be connected through a local area network, a metropolitan area network, or a wide area network. In the embodiment of the present invention, one implementation mode uses a combination of computin...

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Abstract

The embodiment of the invention provides a data backup scheme. The data backup scheme comprises the following steps: receiving the first version data sent by the nodes in at least two data protection domains,which is performed by a node in a backup data protection domain; performing check operation on the first version data to obtain the first check data; saving the first check data; receiving the compressed difference data sent by the nodes in at least two data protection domains; performing check operation on the first check data and the difference data to obtain the second check data; and saving the second check data; wherein the difference data represents the difference between the second version data and the first version data, and the second version data is the modified first version data.

Description

technical field [0001] The invention relates to the technical field of data storage, in particular to a data backup method, a node and a data backup system. Background technique [0002] In order to ensure the reliability of data in the data center, the data in the data center is usually redundantly implemented in multiple data centers in the form of multiple copies, so as to realize backup and disaster recovery between data centers. [0003] Such as figure 1 As shown, the data in data center 1 has three versions, namely A1, A2, and A3, where A1 is the first version of data, A2 is the modified data of A1, that is, the second version of data, and A3 is the modified version of A2 data, that is, the third version data. There are three versions of data in data center 2, namely B1, B2 and B3, where B1 is the first version of data, B2 is the modified data of B1, that is, the second version of data, and B3 is the modified data of B2, namely Third version data. Data center 1 sen...

Claims

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Application Information

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IPC IPC(8): G06F11/14
CPCG06F11/1425G06F11/1489
Inventor 钟延辉张宗全
Owner HUAWEI TECH CO LTD