A method, system, device and medium for incremental synchronization of annular two places and three centers

An incremental synchronization and ring technology, which is applied in the redundant operation of data error detection, software engineering design, and the generation of response errors. time, reducing the effect of repeated copies

Active Publication Date: 2022-07-26
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Abstract
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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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  • A method, system, device and medium for incremental synchronization of annular two places and three centers
  • A method, system, device and medium for incremental synchronization of annular two places and three centers
  • A method, system, device and medium for incremental synchronization of annular two places and three centers

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Embodiment Construction

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention will be further described in detail below with reference to the specific embodiments and the accompanying drawings.

[0020] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two entities with the same name but not the same or non-identical parameters. It can be seen that "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, and subsequent embodiments will not describe them one by one.

[0021] Based on the above objective, in the first aspect of the embodiments of the present invention, an embodiment of a method for incrementally synchronizing two centers in two places and three centers in a ring is proposed. figure ...

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Abstract

The invention discloses a method, system, device and storage medium for incrementally synchronizing two centers in two places and three centers. The method includes: initiating a synchronization / active-active remote replication relationship between a production volume and a first disaster tolerance volume; The volume receives data, and updates the first map of the production volume according to the data; starts the periodic asynchronous remote replication relationship between the first disaster recovery volume and the second disaster recovery volume, and synchronizes the first disaster recovery volume and the second disaster recovery volume according to the first map. the production volume; in response to the failure of the first DR volume or the failure of the link between the production volume and the first DR volume, updating the second bitmap of the production volume based on the first map; and starting the production volume and the second bitmap The backup period asynchronous remote synchronization relationship between the disaster recovery volumes, and incremental synchronization is performed on the second disaster recovery volume based on the second bitmap. The invention can realize the incremental synchronization of the asynchronous remote replication of the backup cycle in the annular two-place and three-center, reduce the repeated copying of data, and reduce the copying time from the production volume to the second disaster-tolerant volume.

Description

technical field [0001] The present invention relates to the field of data synchronization, and more particularly, to a method, a system, a computer device and a readable medium for incrementally synchronizing two centers in two places and three centers in a ring. Background technique [0002] The design method of ring 3DC (Three data center in two sites) in the current storage system is mainly realized by cascading synchronous remote replication / active-active and periodic asynchronous remote replication. Among them, the production volume and the second disaster recovery The backup cycle between volumes is asynchronous and full synchronization is used remotely, which will make every 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 When the backup cycle asynchronous remote replication Rcy2 is enabled, the data on the production volume will be fully synchronize...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/14G06F8/658
CPCG06F11/1448G06F11/1489G06F8/658
Inventor 李俭
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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