The Key Technologies Of The Enterprise-class Composite Data Protection System

Currently, human activities increasingly depend on a variety of digital information. Explosive growth of data, and its growing importance is the objective, which for the storage of data storage protection system presented a huge challenge.Data backup system is there to prevent operator error or system failure resulting in data loss, but will focus on the whole system or part of the data from the application host's hard disk or disk array copied to other storage media of the process, the purpose is to protect the system's high availability and the normal operation of the system is the basis of data protection.This internal dispersion for the user's desktop computer data backup and recovery needs, proposed a new system. The mass storage system with industrial-grade server for the backing, deployment of embedded software within the enterprise desktop e-mail, databases, files and other data backup, synchronization, archiving, recovery, while achieving double hot-house server equipment. EDP for desktop systems located in data backup and protection, Flex, concise and practical, no more installation, maintenance. As long as the desktop computer, you can easily use the system to enable enterprises to get data security.Innovation of this thesis are: First, the development of a permanent dynamic monitoring software, monitoring changes in the database transaction log files, restore the SQL action statements and realize the logic of MSSQL real-time replication; Second, the application file handle reverse mapping to the disk structure principle, made the bottom of the VXD disk read and write and read data by sector approach, to achieve the lock file access operation; Third, hook the target audience through the operation, fast detection of changes in the data block, generating a snapshot, in order to achieve continuous data protection; Fourth, through the description of the different structure of the mail system, the implementation of the underlying structure of the message data file and mail extraction, the realization of Outlook, Outlook Express, Foxmail such as mail extraction and incremental replication.This enterprise-class data protection system EDP composite prototype for the thesis, focusing on the following 2 point technique:1) proposed a unified framework for concurrency, this makes the development team can focus on dealing with specific business itself, such as file uploading and downloading, the disk processing, database processing. Greatly reduce the complexity of communications processing, communications processing procedures of other good reference2) propose a transaction log to crawl through to realize real-time database replication technology. After in-depth study on the hot standby database, disaster recovery and so very usefulThesis from both theoretical and practical aspects of a comprehensive, systematic data storage protection system in all aspects of in-depth analysis and discussion, combined with results of the project in its own way of examples and detailed description of storage system research tools, implementation, and overall thinking .