Research and Implementation of Distributed Disaster Tolerant System

With the advent of the information age, the growths of data amount are explosive in various industries and the importance of data is becoming more and more prominent. When a disaster occurs, how to recover data completely and rapidly is one of the important issues which raised common concern in both industry and academy. This paper proposes a distributed disaster tolerant system based on information decentralization algorithm. The system, called NewDDR, adopts distributed architecture to ensure the high availability of data even under the condition of multi-node damage and continuous disaster. NewDDR uses considerably fewer physical resources by employing the information decentralization algorithm which is based on erasure codes. Experiments show that NewDDR can guarantee effective protection of data and business , while not affect the normal operation of the application.