| 一种块级连续数据保护系统的快速恢复方法 |
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| 引用本文： | 李虓,谭毓安,李元章.一种块级连续数据保护系统的快速恢复方法[J].北京理工大学学报,2011,31(6):679-684. |
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| 作者姓名： | 李虓 谭毓安 李元章 |
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| 作者单位： | 北京理工大学计算机学院,北京,100081 |
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| 摘 要： | 针对传统连续数据保护技术需要遍历连续数据保护(CDP)日志以提供任意时间点磁盘镜像的问题,提出了一种新的快速恢复技术,即基于后向连接的按需快速恢复技术.在讨论了该快速恢复技术使用的基本数据结构,并引进了在基本数据结构中加入指针构成的后向连接的基础上,给出并分析了利用后向连接实现任意时间点快速恢复的相关算法.通过在实际工作负载下的模拟实验,说明了在恢复时间点距离当前时间点较近的情况下,使用快速恢复方法能够以可接受的响应时间为代价完成快速恢复.
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| 关 键 词： | 连续数据保护 按需恢复 临时磁盘映像 |
| 收稿时间： | 2010/9/29 0:00:00 |
A Rapid Recovery Method for Block-Level CDP Systems |
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| LI Xiao,TAN Yu-an and LI Yuan-zhang.A Rapid Recovery Method for Block-Level CDP Systems[J].Journal of Beijing Institute of Technology(Natural Science Edition),2011,31(6):679-684. |
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| Authors: | LI Xiao TAN Yu-an and LI Yuan-zhang |
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| Institution: | LI Xiao,TAN Yu-an,LI Yuan-zhang(School of Computer Science and Technology,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | In this paper,we propose a new rapid recovery method for continuous data protection(CDP) system to solve the problem in traditional CDP system that it takes large amount of time to recover to any point in time.The proposed method could be called by the technique of back-link based recovery on demand.After discussing the data structure of new method and introducing the concept of back-link based on the pointers in the data structure,we have developed and constructed the new rapid recovery algorithms.The test... |
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| Keywords: | continuous data protection(CDP) recovery on demand temporary disk image |
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