發(fā)布時(shí)間：2018-03-28 05:38

  本文選題：云存儲(chǔ)　切入點(diǎn)：副本管理　出處：《海南大學(xué)》2013年碩士論文

【摘要】：隨著互聯(lián)網(wǎng)技術(shù)的不斷發(fā)展,尤其在最近幾年,數(shù)據(jù)呈現(xiàn)出爆炸式的發(fā)展,傳統(tǒng)的數(shù)據(jù)處理方式已經(jīng)無(wú)法滿足人們的需要。云存儲(chǔ)的出現(xiàn)給人們帶來(lái)了福音,可以很好的滿足用戶數(shù)據(jù)處理需求。然而,云存儲(chǔ)的出現(xiàn)也帶來(lái)了系統(tǒng)容錯(cuò)性、訪問(wèn)效率、數(shù)據(jù)可靠性等問(wèn)題。為了解決這些問(wèn)題,論文為云存儲(chǔ)引入了副本技術(shù)。副本技術(shù)的引入,也給系統(tǒng)帶來(lái)了副本一致性維護(hù)、負(fù)載均衡等問(wèn)題。因此,對(duì)云存儲(chǔ)環(huán)境下的副本創(chuàng)建策略的研究是必要而有意義的。 論文主要開展了以下研究工作： 首先,詳細(xì)介紹了云計(jì)算的基本概念及相關(guān)特點(diǎn),云存儲(chǔ)基本概念及發(fā)展現(xiàn)狀,云存儲(chǔ)與云計(jì)算之間的關(guān)系,云存儲(chǔ)與副本管理的關(guān)系,副本管理流程,著重介紹了分布式文件系統(tǒng)的副本管理的研究現(xiàn)狀。 然后,針對(duì)云存儲(chǔ)和其環(huán)境下的副本管理問(wèn)題,設(shè)計(jì)和實(shí)現(xiàn)了一個(gè)仿真系統(tǒng)RMSim,為后續(xù)章節(jié)的實(shí)驗(yàn)部分奠定了基礎(chǔ)。 第三,針對(duì)文件在創(chuàng)建時(shí)期的副本管理策略問(wèn)題,設(shè)計(jì)了一個(gè)靜態(tài)副本創(chuàng)建策略。該策略以系統(tǒng)的負(fù)載均衡和減少網(wǎng)絡(luò)延遲為目標(biāo),根據(jù)系統(tǒng)實(shí)時(shí)信息選擇最佳節(jié)點(diǎn)存放副本。實(shí)驗(yàn)表明,該策略可以很好的解決負(fù)載均衡問(wèn)題,減少用戶訪問(wèn)網(wǎng)絡(luò)延遲。 最后,針對(duì)文件存在時(shí)期的副本管理策略問(wèn)題,以提高訪問(wèn)效率為目標(biāo),設(shè)計(jì)了一個(gè)以歷史訪問(wèn)信息為依據(jù)的動(dòng)態(tài)副本創(chuàng)建策略。實(shí)驗(yàn)表明,該策略提高了用戶對(duì)云存儲(chǔ)系統(tǒng)的訪問(wèn)效率,提高了云存儲(chǔ)系統(tǒng)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.
【學(xué)位授予單位】：海南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TP333

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本文編號(hào)：1675016