A Design Of Date Backup And Recovery System Based On Network

With the rapid development and broad application of IT products and networktechnique associated with computers, the information security is getting more and morevalued. The data in computers is the most valuable fortune. Operations on computersare all for taking the advantage of the data. Especially the Internet application of highspeed development, cloud computing, cloud storage technology gradually popular today,a single application system load tend to rely on dozens of even thousands of servercommon operation, the application system to generate data capacity huge, distributionin decentralization. In this case, how to ensure the distributed (or cloud storage)application capacity data efficient backup and timely implementation of data recoverywhen disaster occurs, ensure consistency of disaster recovery on all computers, becomethe new topic of data security research.The classes of technologies and methods of data backup and recovery wereintroduced. Methods of network data store were introduced too. On this basis, ways ofnetwork data backup and restore were selected.Through the analysis of the network data backup recovery mode and put forwardbased on the UNDO recovery technology to realize network backup recovery systemdesign. Based on the UNDO recovery technology, this paper puts forward the conceptof service oriented recovery, construct the service oriented recovery model, so as tosolve the data consistency problem of disaster recovery in distributed networkenvironment system.The structure of the network data backup and recovery system included the clientlayer, management layer, server layer. The centralized management and the dataautomatically backup and recovery were implemented with this system. a PKI（PublicKey Infrastructrue）security module is constructed for System security. The users couldexchange data securely with it, and the security requirement of secrecy, integrity,authenticity and nonrepudiation were satisfied. Each submodule of the system wasdesigned in detail and implemented. The problems of concurrency, I/O ports block, andnetwork interfaces etc existed in soft design were solved. The test platform was constructed, and the system was tesed systemically with it. The results show that eachfuction of the system was correct and effective, achieve the expected design target.