Method and Information Technology to Support Decision-Making on Assessment of Reliability and Fault Tolerance for Information Systems

This article is devoted to assessing the reliability and fault tolerance of information and automated systems. A method is proposed that allows one to determine the level of fault tolerance of components of information and automated systems, to take into account several criteria with different directions of optimization, to evaluate and rank alternative solutions. Based on the proposed method, corresponding information technology has been developed, which makes it possible to determine the reliability of the operation of information and automated systems. The proposed method and approach were applied in practice to assess the reliability and fault tolerance of information system components according to various criteria. The levels of fault tolerance of each of the components of the information system were identified. Practical application of the method has shown that it can be used to calculate the level of reliability and fault tolerance of information and automated systems.