Data backup method, device and system

A data backup and data technology, applied in the computer field, can solve the problem of consuming large network resources, and achieve the effect of avoiding data transmission and reducing network consumption

Active Publication Date: 2017-06-16
HUAWEI CLOUD COMPUTING TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] No matter for synchronous replication or asynchronous replication, in the prior art, when the data in the primary storage repository changes, the changed data in the primary storage repository must be transmitted to the standby storage repository If the data in the database changes greatly, a large amount of network resources will be consumed when the data is transmitted over the network.

Method used

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  • Data backup method, device and system
  • Data backup method, device and system
  • Data backup method, device and system

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Embodiment Construction

[0037] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0038] According to the embodiment of the present invention, in order to increase the disaster recovery performance of user data, a client is configured with a main storage library and a backup storage library, wherein the backup storage library is a disaster recovery backup of the main storage library, and the backup storage library stores the primary The backup data of the repository, when an error occurs in the data of the primary repository, the data in the backup repository can be used to restore the data of the client, thereby increasing the disaster recovery performance of user data. In order to ensure that the data in the standby repository is valid, when the data in the primary repository changes, the same update as that of the primary repository needs to be made to the standby repository.

[0039] figure 1 It is a schematic diagram of the system logic...

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Abstract

The embodiment of the invention provides a data backup method, device and system which are used for achieving data synchronization of a master repository and a backup repository. The master repository contains a first storage node and a second storage node, the backup repository contains a third storage node and a fourth storage node, wherein the third storage node is a backup node of the first storage node, and the fourth storage node is a backup node of the second storage node. The method comprises the steps that the master repository receives a first migration instruction; first data is migrated to the second storage node from the first storage node according to the first migration instruction; a second migration instruction is sent to the backup repository to indicate the backup repository to migrate the first data to the fourth storage node from the third storage node. According to the technical scheme, synchronous operation of the master repository and the backup repository is achieved on the condition that mass data transmission between the master repository and the backup repository is avoided.

Description

technical field [0001] The embodiments of the present invention relate to the computer field, and in particular to a data backup method, device and system. Background technique [0002] Data disaster recovery refers to the establishment of an off-site data system, which is an available copy of local key application data. When a disaster occurs in the local data and the entire application system, the system has at least one copy of available business-critical data in off-site. The main technology it adopts is data backup and data replication technology, and the processing of data disaster recovery is actually the processing of off-site data replication. The remote data can be a full real-time replication of the local production data (synchronous replication), or it can be slightly behind the local data (asynchronous replication). [0003] Taking the data disaster recovery of Oracle database as an example, in order to ensure high availability and high reliability, Oracle dat...

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Application Information

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IPC IPC(8): G06F11/14G06F17/30
CPCG06F11/1464G06F16/214G06F16/00
Inventor 谢丰曾敬勇
Owner HUAWEI CLOUD COMPUTING TECH CO LTD
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