ABSTRACT
Hot standby technology becomes a popular method for improving the reliability of a crucial component, and a significant system. Considering the failure mechanisms of components, this paper proposes a binary decision diagram-based method for modeling the failure behaviors of hot standby systems. The failure probability of the component what fails firstly among the primary and hot standby component is discussed. We find that under the condition of that one component fails firstly, as time goes by, the transient and cumulative failure probabilities of that the primary and hot standby component fail firstly change. Besides, after one component fails firstly, the reliability of the system sharply decreases and totally depends on the statuses of those remaining functional components. With the help of the method proposed in this paper, more practical work about the maintainability and design optimization can be done.
