数字图书馆资源的云存储模型研究

发布时间：2018-06-13 08:01

本文选题：数字图书馆 + 资源存储　；参考：《上海海洋大学》2012年硕士论文

【摘要】：本课题研究一种基于云存储的数字图书馆资源存储模型。本课题所研究的系统模型是在深入研究数字图书馆资源建设和云存储技术的基础上，并根据现有图书馆的业务需求提出一种基于云存储的模型设计方案。本文的研究内容有如下几个方面： 1．对现有的数字图书馆资源的存储模型进行分析研究：通过对传统的资源存储方式的优缺点进行分析，结合数字图书馆资源存储发展的需要，分析数字图书馆的存储特点以及所需要的存储技术。数字图书馆正在向区域性、联合性发展，通过资源的整合并统一的对外提供服务，实现跨行业、跨地域的资源有限和服务无限，资源的共享深度和广度出现前所未有的景象，真正让用户感觉到信息资源的高度共享和无处不再得服务。 2．把云存储理论的思想引入数字图书馆的资源存储中在众多的存储技术中，云存储技术脱颖而出，云存储具有分布式文件系统、网格技术和集群应用等功能，通过应用软件将大量处在网络中的各种不同类型的存储设备集合起来协同工作，虚拟成一个系统统一对外提供数据访问和数据存储服务。云存储像互联网和广域网一样具有云状的结构，对于使用云存储的用户来讲，不是具体的指某一设备，而是指有很多服务器和云存储设备所构成的集合体，云存储的使用者，使用的并不是某一具体的存储设备而是整个云存储系统虚拟的资源，是一种数据访问服务。云存储的核心是存储设备与应用软件相结合，通过应用软件来实现存储设备向存储服务的转变，也方便了对存储设备的管理。 3．对云存储中副本存放的策略进行改进通过分析HDFS分布式文件系统文件副本存放策略，并对HDFS副本存放策略进行改进，提出动态副本存储策略。 4．设计符合数字图书馆资源存储的系统模型云存储的技术非常适合数字图书馆资源的存储，区域性的数字图书馆统一的接口和云存储的统一的数据服务非常相似，所有的资源都存储在云中从而能更方便资源的共享，数据的管理、维护都更方便，本文通过对现有的图书馆存储技术和云存储技术的分析，设计出一个符合数字图书馆资源存储发展需求的云存储模型，，并实现模型中的部分功能。通过对所实现的功能进行性能测试，从实验结果证明模型的可行性、优越性。
[Abstract]:This paper studies a digital library resource storage model based on cloud storage. The system model studied in this paper is based on the research of digital library resource construction and cloud storage technology, and according to the business needs of the existing library, a model design scheme based on cloud storage is put forward. The research contents of this paper are as follows: 1. Analysis of the existing storage model of digital library resources: through the analysis of the advantages and disadvantages of the traditional resource storage, Combined with the needs of the development of digital library resource storage, the storage characteristics and storage technology of digital library are analyzed. The digital library is developing to the regional, joint development, through the integration of resources and unified external services, the realization of cross-industry, cross-regional resources and unlimited services, the depth and breadth of resource sharing has never been seen. 2. Introducing cloud storage theory into the storage of resources in digital libraries in many storage technologies, Cloud storage technology stands out. Cloud storage has the functions of distributed file system, grid technology and cluster application. Virtual system provides data access and data storage services. Cloud storage, like the Internet and WAN, has a cloud structure. For users who use cloud storage, it does not refer specifically to a particular device, but to a collection of many servers and cloud storage devices, the users of cloud storage. It is not a specific storage device, but a virtual resource of the whole cloud storage system. It is a data access service. The core of cloud storage is the combination of storage device and application software to realize the transformation from storage device to storage service through application software. It also facilitates the management of storage devices. 3. To improve the strategy of copy storage in cloud storage by analyzing the file copy storage strategy of HDFS distributed file system and improving the policy of HDFS copy storage. The strategy of dynamic copy storage is put forward. 4. The technology of cloud storage, which accords with the system model of digital library resource storage, is very suitable for the storage of digital library resources. The unified interface of the regional digital library is very similar to the unified data service stored in the cloud. All resources are stored in the cloud so that it is more convenient to share the resources, and the management and maintenance of the data are more convenient. Based on the analysis of the existing library storage technology and cloud storage technology, this paper designs a cloud storage model that meets the needs of the development of digital library resource storage, and realizes some functions of the model. The experimental results show the feasibility and superiority of the model.
【学位授予单位】：上海海洋大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：G250.76;TP333

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