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Method and device for protecting deduplication data

A data protection and deduplication technology, applied in the storage field, can solve the problems of low storage space utilization rate, large amount of calculation, and failure to take into account protection efficiency and space utilization rate at the same time, so as to achieve both storage space utilization rate and reduced processing performance Requirements, the effect of improving data protection efficiency

Active Publication Date: 2021-10-29
MACROSAN TECH
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Problems solved by technology

Since the deduplication process involves operations such as fingerprint calculation, fingerprint database maintenance, and duplicate data comparison, the calculation load is large and the access path is long, resulting in low data protection efficiency
[0005] If the target LUN is not a deduplication LUN and the deduplication process is not performed, all data (including duplicate data) will be written to the storage space of the storage device, resulting in low storage space utilization
[0006] It can be seen that for the data protection of deduplicated LUNs, there is currently no technical solution that can take into account both protection efficiency and space utilization.

Method used

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  • Method and device for protecting deduplication data
  • Method and device for protecting deduplication data
  • Method and device for protecting deduplication data

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Embodiment Construction

[0051] 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.

[0052] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any and all possible combinations of one or more of the a...

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Abstract

The invention provides a method and device for protecting deduplication data applied to storage equipment. According to the method, data in a source deduplication pool is copied to a target deduplication pool, a logic space mapping table of a source deduplication LUN is copied to a target deduplication LUN, and data protection of the deduplication LUN is achieved. In the process, a complex deduplication processing flow does not need to be executed on the target deduplication LUN, but a deduplication effect can also be achieved (no duplicated data exists in the target deduplication pool), so that the data protection efficiency of the deduplication LUN can be effectively improved, the storage space utilization rate of the storage equipment is considered. The processing performance requirement for the storage equipment where the target deduplication LUN is located can be lowered. Besides, the storage equipment where the target deduplication LUN is located does not need to maintain the fingerprint database of the deduplication data, so that the storage resources of the storage equipment where the target deduplication LUN is located can be effectively saved.

Description

technical field [0001] The present application relates to the field of storage technologies, and in particular to a method and device for protecting deduplication data. Background technique [0002] In order to improve the resource utilization rate of the storage device, a deduplication (full name: deduplication) mechanism is usually used to eliminate duplicate data in the storage device, so that only one copy of the same data is saved. [0003] A logical unit number (English: Logical Unit Number, abbreviation: LUN) that supports the deduplication function in a storage device is called a deduplication LUN. The data written to the deduplication LUN also has data protection requirements. For example, copy the data of the deduplication LUN (recorded as the first deduplication LUN) to the target LUN to obtain the backup data of the deduplication LUN. [0004] If the target LUN is also a LUN that supports the deduplication function (referred to as the second deduplication LUN), ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0608G06F3/0619G06F3/0641G06F3/0644G06F3/065G06F3/0652G06F3/0689
Inventor 上官应兰
Owner MACROSAN TECH
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