Availability engineering of the information processing system

Based upon the summarization of system availability engineering, this paper sets forth the availability management works, such as the development demonstration, the technical reviews, the question eliminating and configuration management of the Information Processing System, and depicts the measures taken in the system reliability, maintainability and supportability design, and then the system availability models are deduced of full functions, main functions and lowest functions, moreover the system availability is quantitatively analyzed. Thenceforth the further prospect of the availability engineering of Information Processing System is presented.