Research Of Fast Disaster Recovery Between Different Sites

The thesis mainly researches the disaster recovery between different cities, throughing the research of fiber net transferring.In the world nowadays, all kinds of field think much of disaster recovery, and the demand of DR for most companies is not only validity, safety, but also more efficient. Currently, the main technology to achieve DR of most companies is to copy from different sites or synchronization PPRC and so on. Meanwhile, companies and research teams develop many DR technologies of different functions based on these technologies.But, there exists a main mean point of synchronization PPRC, it will occupy much bandwidth when transfering through fiber net which influences the normal using performance. The performance of the whole system will down in the case of pruduction when doing DR.In order to solve the problem, the thesis brings forward the DR through asynchronous PPRC and flashcopy. The asynchronous PPRC will resolve the performance problem and the flashcopy will resolve the data lost problem. So the combination of the two technologies will bring us more efficient, faster and safer DR technology. The last part of the thesis also proves the advantage and feasibility of the technology.