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| 一种P2P分布式系统高可靠数据恢复模型 | |
| 引用本文： | 姜春茂,张国印,曲明成. 一种P2P分布式系统高可靠数据恢复模型[J]. 哈尔滨工程大学学报, 2012, 33(3): 347-354 |
| 作者姓名： | 姜春茂 张国印 曲明成 |
| 作者单位： | 1. 哈尔滨工程大学计算机科学与技术学院,黑龙江哈尔滨150001;哈尔滨师范大学 计算机科学技术与信息工程学院,黑龙江哈尔滨150025 2. 哈尔滨工程大学计算机科学与技术学院,黑龙江哈尔滨,150001 3. 哈尔滨工业大学计算机科学与技术学院,黑龙江哈尔滨,150001 |
| 基金项目： | 国家自然科学基金资助项目(61073042);黑龙江省自然科学基金资助项目(F201121,F201139) |
| 摘 要： | 交叉存储和并行传输给出的数据失效模型,虽然达到了可靠存储、快速数据恢复的目标,但是其假定了下载速度随着并行传输数的增加呈现线性增长,其约束过于理想.提出一种基于并行传输策略、泊松分布理论和数据交换中心机制的数据恢复模型,模型引入非线性速度和函数,取消了对物理网络并行传输速度的假定与约束.从理论上分析了各种参数对数据恢复模型性能的影响.实验结果与理论分析一致,模型在使用了与双副本相同存储空间和网络流量影响一致的前提下,有效地降低了数据的失效概率. |
| 关 键 词： | 分布式系统 数据恢复模型 并行传输 数据存储模型 |
A highly-reliable data recovery model based on parallel transmission for a P2P distributed system |
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| JIANG Chunmao , ZHANG Guoyin , QU Mingcheng. A highly-reliable data recovery model based on parallel transmission for a P2P distributed system[J]. Journal of Harbin Engineering University, 2012, 33(3): 347-354 | |
| Authors: | JIANG Chunmao ZHANG Guoyin QU Mingcheng |
| Affiliation: | 1.College of Computer Science and Technology,Harbin Engineering University,Harbin 150001,China;2.School of Computer Science,Technology and Information Engineering,Harbin Normal University,Harbin 150025,China;3.School of Computer Science and Technology,Harbin Institute of Technology,Harbin 150001,China) |
| Abstract: | The data failure model given by interleaving memory and parallel transmission can achieve the goal of reliable storage and fast data recovery,but the assumption that the download speed increases linearly with the increase of the number of parallel transmissions is too ideal.To overcome the problems from past research,this paper proposed a data recovery model based on the parallel transmission strategy,Poisson distribution theory,and the mechanism of a data exchange center.The model introduced the non-linear speed and function,cancelling the constraints and assumption for parallel transmission speed of a physical network.The paper theoretically analyzed the influence of all parameters on the performance of the data recovery model.The experimental result is consistent with the theoretical analysis.On the premise that the storage space used by the model is the same as a double copy,and that the influence of network flow is identical,the model effectively reduced the data failure probability |
| Keywords: | distributed system data recovery model parallel data transmission storage model |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
