Data replication method, system and equipment

A data replication and data technology, which is applied in the fields of digital data processing, input/output process of data processing, error detection of data due to redundancy in operation, etc. It can solve the problem of LUN data replication lag and data recovery point target becoming larger. and other problems to achieve the effect of reducing performance impact, reducing RPO, and reducing the number of times of data reading

Active Publication Date: 2022-05-06
MACROSAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not difficult to see that this technical solution can start a new copy from LUNB to LUNC only after the new copy from LUNA to LUNB is completed. Tolerable data loss RPO (Recovery Point Objective, data recovery point objective) becomes larger

Method used

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  • Data replication method, system and equipment
  • Data replication method, system and equipment
  • Data replication method, system and equipment

Examples

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Embodiment Construction

[0023] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0024] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...

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Abstract

The invention provides a data replication method, system and device, when a source LUN belonging to a storage device determines to start new replication, all target LUNs corresponding to transmission bitmaps with bits being 0 are deleted from a target LUN list, a total transmission bitmap is generated according to the transmission bitmaps corresponding to the target LUNs in the target LUN list, the transmission bitmaps of the target LUNs are updated, and the data replication efficiency is improved. Copying the data increment of the source LUN to each target LUN according to the total transmission bitmap; and repeating the steps until the target LUN list is empty. It can be seen that one-to-many copying is supported, when one LUN is copied to multiple LUNs, the data needing to be copied only needs to be read once according to the generated total transmission bitmap for the difference data needing to be transmitted by the multiple LUNs, the data reading frequency can be reduced, and therefore the RPO can be reduced while the influence on the performance of the source LUN in the copying process is reduced.

Description

technical field [0001] The present application relates to the technical field of data storage, and in particular to a data replication method, system and equipment. Background technique [0002] With the advent of the era of big data, the amount of data is getting larger and more important, and data backup has also become one of the common means to maintain data persistence protection, which is also a way to deal with "hard disasters". " common solution. Hard disasters, hence the name Siyi, refer to "hard" disasters, usually referring to physical damage or unreadable production data due to RAID (Redundant Arrays of Independent Disks, disk array) failures, earthquakes, fires, and other factors. Through the replication technology, a data copy can be saved for the production data volume in the disaster recovery center. The copy data volume and the generated data volume are physically independent. When a hard disaster occurs to the production data volume, the copy data volume c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F11/14
CPCG06F3/065G06F3/0619G06F3/0689G06F11/1448Y02D10/00
Inventor 上官应兰
Owner MACROSAN TECH
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