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Design and Implementation for Terminal File Backup and Recovery System

Author: ZhangGuiXian
Tutor: HanZhen
School: Beijing Jiaotong University
Course: Computer Software and Theory
Keywords: Disaster recovery Full backup Incremental Backup Synchronization backup Memory Copy
CLC: TP309.3
Type: Master's thesis
Year: 2009
Downloads: 72
Quote: 0
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Abstract


With more and more widespread application of network technology and information, the amount of information rapid expansion, the increasing importance of information. Manifestations of data - the information, it is the integrity and safety of the field of data security has become one of the hot research issues. In order to ensure the establishment of enterprise data security, data disaster recovery system, not only the needs of very large enterprises, small and medium-sized enterprises meet their urgent needs. Disaster recovery technology is maturing, with the corresponding disaster recovery system also major in computer information systems play an increasingly important role. However, with the increasingly widespread critical information systems in the network application, the disaster recovery system still exist many deficiencies: Many disaster recovery system solely designed for the damage caused by natural disasters, so that they are powerless before the virus; many disaster recovery The system is still a lack of real-time backup capacity, resulting in the loss of backup interval data; most disaster recovery systems are currently in use Microsoft operating system default file copy file copy, however, the operating system default file copy way but there is a low efficiency, and the system overhead insufficient. In this paper, starting from both theoretical and practical point of view, in-depth discussion of disaster recovery technology. Thesis based on comprehensive introduction to the theoretical knowledge of disaster recovery from the actual needs of the design of the terminal contains a complete data backup, incremental backup, sync backup, file compression, file encryption, file backup and recovery system. Own copy of the operating system functions efficiency and low overhead drawbacks, this paper presents a copy of a copy of the cache memory Copy files to achieve high efficiency. The so-called Memory Copy, is to abandon the system default cache, cache memory opens up space to read and write data, and then complete the file copy of the copy process. By experiments and performance analysis, and achieved good results. Incremental backup data based on existing technology improved by using a tree structure traversal file folders, the resource tree merge file comparison, and improve system efficiency. Combined resources tree, is the resource tree structure to store until the backup folder and target backup folder, and then merge the two resources tree, which are listed the new node or modified node to achieve identify new increase the folder (file) or modify the folder (file) purposes. After the backup system to achieve, this summary of the research work, while prospects next step will be to conduct the work.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > General issues > Security and confidentiality > Data backup and recovery
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