Формалізація інтегрального критерію відмовостійкості багаторівневої інформаційної системи дата-центру

Abstract

The paper proposes a formalized representation of the fault tolerance of a multi-level data center information system through an integral criterion of configuration suitability. The criterion combines the states of components at different levels, the possibility of redundancy coverage, service criticality, inter-level dependencies, the risk of cascading failure propagation, acceptable recovery time, and the resource costs required to maintain the configuration. The proposed representation makes it possible to consider fault tolerance as the result of selecting a configuration capable of maintaining critical services under existing constraints