On Duplicated Fault Tolerance System

After analyzing the main modes of the duplicated fault tolerance system currently, the author gives readers new duplicated fault tolerance system based internet/intranet. The author also describes the architecture and their functions and the design and the implement of the software on the duplicated fault tolerance. The paper analyzes the reliability and safety of dual module hot spare architecture which is widely used to achieve high reliability and safety. The failure rates are divided into several different parts. And the reliability and safety may be using Markov model according to the effects of each part of the failure rate.A full discussion of the key problems in duplicated fault tolerance system is presented, including the definition of system architecture, fault-detection and state-transition. The paper presents and approach to design duplicates fault tolerance system based on multi-threads of windows operation and emphasizes the realize it.We can see fairly that the duplicated fault tolerance is a special solution to the system security problem we encountered when developing our duplicated fault tolerance system technology in china. its gives us a new clue in duplicated fault tolerance technology nationalizing.