Method, system and device for incrementally synchronizing two places and three centers of ring, and medium

An incremental synchronization and ring technology, which is applied to the redundancy in the operation for data error detection, software engineering design, response error generation, etc. It can solve the problems of large data volume and long time consumption in the production volume, and reduce copying. time, reducing the effect of repeated copies

Active Publication Date: 2021-02-12
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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Problems solved by technology

[0002] The ring 3DC (Three data center in two sites) design method in the current storage system is mainly realized through synchronous remote replication / hyperactive and periodic asynchronous remote replication cascading. Among them, the production volume and the second disaster recovery The backup cycle between volumes is asynchronous and the remote uses full volume synchronization, which will make each time site 2 (the first disaster recovery volume) fails or the link between site1 (production volume) and site2, site2 and site3 (second disaster recovery volume) fails Enabling the backup cycle asynchronous remote replication Rcy2 will synchronize all the data on the production volume to the second disaster recovery volume. Due to the large amount of data on the production volume, each full synchronization takes a long time, and there are cases where the same data is duplicated

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  • Method, system and device for incrementally synchronizing two places and three centers of ring, and medium
  • Method, system and device for incrementally synchronizing two places and three centers of ring, and medium
  • Method, system and device for incrementally synchronizing two places and three centers of ring, and medium

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0020] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name but different parameters or parameters that are not the same, see "first" and "second" It is only for the convenience of expression, and should not be construed as a limitation on the embodiments of the present invention, which will not be described one by one in the subsequent embodiments.

[0021] Based on the above purpose, the first aspect of the embodiments of the present invention proposes an embodiment of a method for incrementally synchronizing two sites and three centers in a ring. figure 1 What is shown is a schematic diagram o...

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Abstract

The invention discloses a method, a system and device for incrementally synchronizing two places and three centers of a ring, and a storage medium. The method comprises the following steps: starting asynchronous / active remote replication relationship between a production volume and a first disaster recovery volume; in response to the fact that the production volume receives the data, updating a first bitmap of the production volume according to the data; starting a periodic asynchronous remote replication relationship between the first disaster recovery volume and the second disaster recoveryvolume, and synchronizing the first disaster recovery volume and the production volume according to the first bitmap; updating a second bitmap of the production volume based on the first bitmap in response to the failure of the first disaster recovery volume or the failure of a link between the production volume and the first disaster recovery volume; and starting a backup period asynchronous remote synchronization relationship between the production volume and the second disaster recovery volume, and performing incremental synchronization on the second disaster recovery volume based on the second bitmap. Incremental synchronization of backup period asynchronous remote replication in annular two-place three-center can be realized, repeated data replication is reduced, and the time for copying a production volume to a second disaster recovery volume is shortened.

Description

technical field [0001] The present invention relates to the field of data synchronization, and more specifically refers to a method, system, computer equipment and readable medium for incrementally synchronizing ring-shaped two places and three centers. Background technique [0002] The ring 3DC (Three data center in two sites) design method in the current storage system is mainly realized through synchronous remote replication / hyperactive and periodic asynchronous remote replication cascading. Among them, the production volume and the second disaster recovery The backup cycle between volumes is asynchronous and the remote uses full volume synchronization, which will make each time site 2 (the first disaster recovery volume) fails or the link between site1 (production volume) and site2, site2 and site3 (second disaster recovery volume) fails Enabling the backup cycle asynchronous remote replication Rcy2 will synchronize all the data on the production volume to the second dis...

Claims

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Application Information

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IPC IPC(8): G06F11/14G06F8/658
CPCG06F11/1448G06F11/1489G06F8/658
Inventor 李俭
Owner SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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