Research and implementation of high-availability model of information application system

摘要

With the thorough application of information technology in the national social and economic development, the dependency of all walks of life on information application system increasingly increases. The demands on the high availability of modern information application system also are increasing. Thus, the selection of proper high availability model is the key to the successful design of information application system. This paper points out the design method of high availability of information application system and studies the implementations of check point model, process pairs model, recovery processing model, alternative treatment model and various high availability models of information application systems and also compares the implementation applicability of various models in information application system.