Through cooperation with dawning and other major system operators , beijing cpt has acquired valuable and extensive experience in providing network storage solution , system security solution , monitoring systems and the broadband multi media application platform 通过与北京曙光及其他大型系统集成商合作，成华创科在网络存储解决方案、系统安全解决方案、监控系统及宽带运营多媒体应用平台积累丰富经验。
It is becoming an urgent requirement to find a new kind of storage architecture . network storage technologies , such as nas ( network - attached storage ) & san ( storage area network ) , which separate storage resources from network servers , is gradually becoming a popular research field 以附网存储（ nas ）和存储局域网（ san ）技术为代表的网络存储技术，是一种全新的脱离于网络服务器的存储体系，近年来逐渐成为国际上比较热门的一个研究方向。
This paper introduces a basic structure of san management software based on the discussion of the development of network storage , the composition of hardware , and the related technology , including the architecture of its management software . the writer has taken part in a research and development on san management software . the paper , according to the writer ' s learned and experience , describes the module of backup and restore which she had studied mainly , then discusses the kernel design of the module detailed 本文在介绍网络存储的发展、相关技术以及san的硬件构成、管理系统软件体系结构的基础上，结合作者参与研发的一个san的存储管理软件的心得体会，提出了一个san管理系统软件的基本架构，并重点介绍了作者所负责的备份和恢复模块( backup & restore )的体系结构、功能模块以及应用介绍，并对实现中的关键技术进行了详实的介绍，对数据的备份和恢复中应用的数据快照( snapshot )技术进行了深入的讨论。
The cluster file systems for large - scale clusters should have multiple data paths and multiple metadata paths in architecture . metadata transactions are decoupled from file read and write operations . large - scale network storages are used to provide multiple file data paths 面向大规模机群的机群文件系统的体系结构应该是多数据通路多元数据通路的,即元数据处理与文件i / o分离,利用大规模网络存储系统来提供多条数据i / o通路,利用一组元数据服务器来提供多条元数据i / o通路。
One is to store the dual network of road network with the forward star structure , which is a compact network storage structure satisfying the needs of route planning . the other one is to straight store road network with the generalized forward star structure , which can represent turn restrictions and inter section delays 一种是采用满足路线优化需要的紧凑的路网存储结构? ?前向关联边结构存储路网的对偶网络；另一种是利用能够表达交叉口转向限制和交叉口延误的存储结构? ?扩展的前向关联边结构，直接存储路网。
This article introduced the whole structure of this managing system based on san first , then it explained a important module - replication module " s funqtion design and its primary technology to realize the target , last , it summarized the existing methods for storage visualization , put forward a kind of new idea on this basis and discussed the future of network storage 本文首先概述san ，其次介绍了基于san的存储资源管理系统的整体构成，然后阐述基于san的该存储管理系统中重要的组成部分? ?复制管理模块的功能设计与分析，接着重点说明了详细设计及相关实现技术，最后对于现有的存储虚拟化的实现方法和特性进行了归纳总结，并在此基础上提出了一种新的构想，并讨论了未来存储领域的发展方向。
Just like other lasted technology , network storage technique will give us a fresh expectation for the future . many foreign large - scale corporations have done a lot of research and development work long before , and have produced relevant output . but domestic academic institutions do little research on this field 目前，国外许多大公司和研究机构在存储管理系统方面进行了大量的研究工作，并推出了一些商业化的系统；然而，国内对这方面的研究却很少，还没有一个相关的产品。
