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Data replication method and apparatus

A data replication and data technology, applied in the field of computer communication, can solve the problems of small IP network bandwidth, large response delay, and difficulty in copying large amounts of data, and achieve the effect of reducing data volume, improving efficiency, and reducing overhead.

Active Publication Date: 2017-08-11
MACROSAN TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the IP network used for data transmission between the replication source device and the replication destination device is hardly a dedicated physical network, and most of them are leased public networks, which makes the bandwidth of the IP network small and the response delay large
When performing data synchronization between the replication source device and the replication destination device, due to the limitation of the bandwidth of the IP network, it is difficult to replicate a large amount of data, which greatly reduces the efficiency of data replication

Method used

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Embodiment Construction

[0027] 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.

[0028] 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 present application provides a data replication method and apparatus, and the method is applied to the storage device. The method may comprise: reading to-be-replicated data from a local LUN storage unit; determining whether the local LUN storage unit and the target LUN storage unit are re-deleting LUN storage units; and if either of the local LUN storage unit and the target LUN storage unit is the re-deleting LUN storage unit, and data re-deleting processing on the to-be-replicated data is finished in either of the local LUN storage unit and the target LUN storage unit, transmitting the logical address of the read to-be-replicated data and index information corresponding to the to-be-replicated data to the remote storage device, so that based on the index information, the remote storage device queries target data identical to the to-be-replicated data in the target LUN storage unit, and establishes a mapping relationship between the target data and the logical address of the to-be-replicated data. By virtue of the method provided by the present application, data replication efficiency can be effectively improved.

Description

technical field [0001] The present application relates to the field of computer communication, in particular to a method and device for duplicating data. Background technique [0002] Replication technology is a data protection technology in network storage. Usually, the data synchronization of the LUN (Logical Unit Number, Logical Unit Number) storage unit of the replication source device and the replication destination device can be realized through the IP network, and the copy data of the LUN storage unit can be established and maintained. When the data on the replication source device is lost due to equipment failure or other reasons, the data in the replication source device can be recovered by using the data copy on the remote replication destination device. [0003] However, the IP network used for data transmission between the replication source device and the replication destination device is hardly a dedicated physical network, and most of them are leased public n...

Claims

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Application Information

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IPC IPC(8): G06F11/14
CPCG06F11/1464
Inventor 扈海龙
Owner MACROSAN TECH
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