【作者】 刘小龙；

【导师】 谢长生；

【作者基本信息】 华中科技大学 ， 计算机系统结构， 2004， 硕士

【摘要】 在构建统一存储网的存储虚拟化模型基础上,深入研究了网络备份系统的原理和技术,设计并实现了文件级的网络备份系统,并对网络备份系统中提高系统性能的优化传输模式进行测试分析。IP存储技术和虚拟存储技术是目前网络存储发展的两大趋势。在介绍了存储网络的体系结构,IP互连技术的基础上,对构建统一存储网的关键问题存储虚拟化技术作了深入讨论。完成了统一存储网中的基于服务器虚拟化的实现方案,结合虚拟化技术对统一存储网的数据流进行分析。在所建立的统一存储网架构上,设计并实现了一个文件级的网络备份系统,它是统一存储网的核心应用。通过对一般网络备份系统的结构进行分析以及网络备份中使用的关键技术进行深入的研究,实现基于统一存储网的Sever-less备份系统架构和实现方案。备份系统从软件设计上划分为三个部分:服务器模块包括管理调度、备份引擎和核心数据库;存储资源端模块包括备份目的和恢复源;客户端模块包括备份源和恢复目的。详细讨论了备份服务器中管理调度、备份引擎等模块的设计和实现。对于备份系统中采用的单个连接传输多个文件的优化传输模式进行测试,表明在小文件密集的情况下性能远高于一般文件传输协议,整体性能优于文件传输协议。更多还原

【Abstract】 The theory and the technology of backup system are deeply researched based on the model of unified storage network virtualization. A file-level network backup system is designed and implemented; a file transfer mechanism that optimizes the backup system is also designed, and it improves system performance.Storage over IP and storage virtualization technology are the most important technology at the trend of the storage-network convergence. Through introducing the architecture of storage-network and storage over IP technology, we introduce the detail of storage virtualization technology which is the key technology of building Unified Storage Network. And then we present the scheme of USN, which merges the block I/O services and the file I/O services based on the TCP/IP, and afterwards analyze the data stream of the USN combining with storage virtualization.A file-level network backup system is designed and implemented based upon USN. It is the kernel service of USN. Through analyzing the principle and structure of common network backup model, some critical techniques of network backup are thoroughly discussed such as LAN-free Backup, Server-free Backup, Snapshot, Mirror. We implement a USN-based Network Backup System successfully. The whole system includes three software modules. Backup Server module includes task agent. Client module includes backup source agent and restore target agent. Storage resource module includes backup target agent and restore source agent. According to the analysis of the performance of Network Backup System based on experiments at the environment of LAN and Internet, we conclude that the speed of Network Backup System is higher than that of ftp in our test environment.更多还原