Repeated data deletion management method and device

A management method and technology for a management device, which are applied in the field of data deduplication management methods and devices, can solve problems such as reducing the working efficiency of storage devices and consuming large system resources, and achieve the effects of improving efficiency, reducing waste of resources, and improving work efficiency.

Active Publication Date: 2018-01-26
MACROSAN TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] However, the hash value calculation and matching process need to consume a lot of system resources, which reduces the working efficiency of the storage device

Method used

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  • Repeated data deletion management method and device
  • Repeated data deletion management method and device
  • Repeated data deletion management method and device

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Embodiment Construction

[0055] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the existing technical solutions and the present invention in conjunction with the accompanying drawings. The technical solutions in the embodiments of the invention are described in further detail.

[0056] Deduplication technology is a storage technology that automatically searches for duplicate data and keeps only one copy of the same data to eliminate redundant data and reduce storage capacity requirements.

[0057] In the deduplication technology, the storage device will generate a large amount of mapping metadata, which is used to realize the deduplication function and manage the stored data blocks; wherein, the mapping metadata may include a logical address mapping tab...

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Abstract

The invention provides a repeated data deletion management method and device. The method and the device are applied to a memory device. A plurality of LUNs are mounted on the memory device. The methodcomprises the steps of determining a target LUN based on a preset repeated deletion detection policy; calculating valid repeated deletion efficiency of the target LUN and comparing the valid repeateddeletion efficiency of the target LUN with preset valid repeated deletion efficiency threshold, wherein the valid repeated deletion efficiency is a ratio of the number of repeated data blocks in a global range and the target LUN, and the total number of the data blocks of the target LUN; if the valid repeated deletion efficiency is smaller than the valid repeated deletion efficiency threshold, forbidding a repeated deletion function of the target LUN. According to the technical scheme, system resources are concentrated on the LUN of which valid repeated deletion efficiency is not smaller thanthe valid repeated deletion efficiency threshold, the repeated deletion efficiency is improved, the resource waste resulting from repeated deletion is reduced, and the working efficiency of the memory device is improved.

Description

technical field [0001] The present application relates to the storage field, in particular to a data deduplication management method and device. Background technique [0002] Deduplication technology, the full name of deduplication, also known as intelligent compression or single instance storage, is a storage technology that automatically searches for duplicate data and keeps only one copy of the same data to eliminate redundant data and reduce storage capacity requirements . [0003] There are many basic methods for implementing deduplication technology, and the deduplication method based on the Hash (translated into hash or hash) algorithm is commonly used at present. The Hash-based deduplication method can calculate the hash value of the data block, and then match the hash value with the hash value of the saved data block. If the same hash value is not matched, the above data block can be saved ; If the same hash value is matched, the duplicate data block may be delete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
Inventor 扈海龙丁志刚
Owner MACROSAN TECH
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