A data backup method, device and medium of a ring 3DC

By using a timer to synchronize the data difference bitmap and identify unbacked-up data in the ring 3DC data backup scheme, the problems of long backup time and repeated copying in the prior art are solved, and an efficient data copying process is achieved.

CN115391099BActive Publication Date: 2026-07-21INSPUR SUZHOU INTELLIGENT TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INSPUR SUZHOU INTELLIGENT TECH CO LTD
Filing Date
2022-08-30
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The existing ring 3DC data backup solution requires data to be retransmitted to the second disaster recovery volume based on the data throughout the entire incremental cycle in the event of a failure. This results in a long backup time and the possibility of duplicate data copying, which affects data copying efficiency.

Method used

By obtaining the incremental period range and current incremental period between the first and second disaster recovery volumes of the ring 3DC, a timer period is selected. During the data synchronization process, the timer is used to synchronize the data difference bitmap. In case of failure, the unbacked-up data is determined based on the data difference bitmap of the production volume, and the production volume is controlled to copy the unbacked-up data to the second disaster recovery volume.

Benefits of technology

This avoids data retransmission throughout the entire incremental cycle due to failures, shortens backup time, avoids duplicate data copying, and improves data copying efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a kind of annular 3DC data backup method, device and medium, applicable to data synchronization field.In the data synchronization between first disaster recovery volume and second disaster recovery volume, the period of data synchronization is divided into different incremental periods according to the timer period of the first disaster recovery volume to improve the accuracy of the incremental period, and the current data difference bitmap of the first disaster recovery volume is updated to the production volume according to the timer period to facilitate the production volume to determine the current copy state.If the copy state of the first disaster recovery volume and the second disaster recovery volume fails, the specific data not backed up at the time of failure can be known according to the data difference bitmap corresponding to the production volume, so as to transmit the unbacked data to the second disaster recovery volume through the production volume.Avoid the problem that the backup time is relatively long when the existing failure occurs, the data in the entire incremental period needs to be retransmitted to the second disaster recovery volume, avoid repeated copying of duplicate data, and shorten the backup time.
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