云存储环境下的副本创建策略的研究

发布时间：2018-03-28 05:38

本文选题：云存储　切入点：副本管理　出处：《海南大学》2013年硕士论文

【摘要】：随着互联网技术的不断发展,尤其在最近几年,数据呈现出爆炸式的发展,传统的数据处理方式已经无法满足人们的需要。云存储的出现给人们带来了福音,可以很好的满足用户数据处理需求。然而,云存储的出现也带来了系统容错性、访问效率、数据可靠性等问题。为了解决这些问题,论文为云存储引入了副本技术。副本技术的引入,也给系统带来了副本一致性维护、负载均衡等问题。因此,对云存储环境下的副本创建策略的研究是必要而有意义的。论文主要开展了以下研究工作：首先,详细介绍了云计算的基本概念及相关特点,云存储基本概念及发展现状,云存储与云计算之间的关系,云存储与副本管理的关系,副本管理流程,着重介绍了分布式文件系统的副本管理的研究现状。然后,针对云存储和其环境下的副本管理问题,设计和实现了一个仿真系统RMSim,为后续章节的实验部分奠定了基础。第三,针对文件在创建时期的副本管理策略问题,设计了一个静态副本创建策略。该策略以系统的负载均衡和减少网络延迟为目标,根据系统实时信息选择最佳节点存放副本。实验表明,该策略可以很好的解决负载均衡问题,减少用户访问网络延迟。最后,针对文件存在时期的副本管理策略问题,以提高访问效率为目标,设计了一个以历史访问信息为依据的动态副本创建策略。实验表明,该策略提高了用户对云存储系统的访问效率,提高了云存储系统性能。
[Abstract]:With the continuous development of Internet technology, especially in recent years, data show explosive development, traditional data processing methods can no longer meet the needs of people. The emergence of cloud storage has brought good news to people. However, the emergence of cloud storage also brings system fault tolerance, access efficiency, data reliability and other problems. In order to solve these problems, This paper introduces replica technology for cloud storage. The introduction of replica technology also brings some problems such as replica consistency maintenance and load balance. Therefore, it is necessary and meaningful to study replica creation strategy in cloud storage environment. The thesis mainly carried out the following research work:. First of all, the basic concepts and related characteristics of cloud computing, the basic concepts and development status of cloud storage, the relationship between cloud storage and cloud computing, the relationship between cloud storage and replica management, the process of replica management, are introduced in detail. This paper introduces the present situation of replica management in distributed file system. Then, aiming at the problem of cloud storage and replica management in its environment, a simulation system RMSimis is designed and implemented, which lays a foundation for the experimental part of the following chapters. Thirdly, aiming at the problem of replica management policy during file creation, a static replica creation policy is designed, which aims at balancing system load and reducing network latency. According to the real-time information of the system, the optimal node storage replica is selected. The experiment shows that the proposed strategy can solve the load balancing problem well and reduce the delay of user access to the network. Finally, aiming at the problem of replica management policy in the period of file existence, a dynamic replica creation strategy based on historical access information is designed in order to improve access efficiency. This strategy improves the access efficiency of cloud storage system and improves the performance of cloud storage system.
【学位授予单位】：海南大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP333

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