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A data replica placement method for geo-distributed cloud storage

A technology of data copy and cloud storage, applied in transmission systems, electrical components, etc., can solve problems such as increasing system task execution time, achieve the effect of reducing data block migration, ensuring system performance, and improving task execution efficiency

Active Publication Date: 2021-07-02
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In the Geo-distributed cloud storage system, the communication cost between multiple data center subset clusters is much higher than the communication cost of data nodes in a single data subset cluster, and a large amount of data transmission between data center subset clusters will Significantly increased execution time of system tasks

Method used

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  • A data replica placement method for geo-distributed cloud storage
  • A data replica placement method for geo-distributed cloud storage
  • A data replica placement method for geo-distributed cloud storage

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Embodiment Construction

[0028] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] When we need to process the data stored in the Geo-distributed cluster, we need to face a new challenge. In the geo-distributed environment, the network load between the data center subset clusters will increase. In the Geo-distributed cluster, the data A large amount of data transmission between centers will greatly reduce the performance of the system. The execution time of a task in a single data center is better than a task in a cluster that needs to transfer data between data centers.

[0030]Inputting data through mobile data centers can reduce the network load between data centers, thereby reducing the execution time of tasks, which inspires us to ensure data localization by changing the placement of data copies, and reduce the network load between data center subset clusters . We mainly focus on solving ...

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Abstract

The present invention relates to a data copy placement method for Geo-distributed cloud storage, which is improved in view of the deficiencies in the prior art. In the Geo-distributed environment, data centers in cloud storage are distributed on different physical locations, mainly considering each The cost of data migration between data centers, based on historical statistics, predicts the access heat of data copies in this period, and then calculates the coefficient of data copies. When placing data copies, comprehensively consider the access heat of data copies in each data center and each The physical capacity value of the data center itself can not only maximize data localization, reduce data block migration between data centers, but also ensure system performance and improve task execution efficiency.

Description

technical field [0001] The invention relates to a data copy placement method for Geo-distributed cloud storage, which belongs to the technical field of cloud storage under Geo-distributed environment. Background technique [0002] With the explosive growth of data, people pay more and more attention to cloud computing. As the basis of cloud computing, cloud storage has become a hot research direction. The processing of big data puts forward higher requirements on the data center. Faced with this situation, the Geo-distributed cloud storage system is a very good solution. A key challenge in Geo-distributed cloud storage is how to effectively guarantee the system performance to meet user needs. In the Geo-distributed cloud storage system, the communication cost between multiple data center subset clusters is much higher than the communication cost of data nodes in a single data subset cluster, and a large amount of data transmission between data center subset clusters will S...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08
CPCH04L67/1095H04L67/1097H04L67/5682
Inventor 付雄赵玉杰乔磊邓松程春玲王俊昌王秀翠
Owner NANJING UNIV OF POSTS & TELECOMM
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