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Fundamental Concepts of Computer System Dependability

Dependability is the system property that integrates such attributes as reliability, availability, safety, security, survivability, maintainability. The aim of the presentation is to summarize the fundamental concepts of dependability . After a historical perspective, definitions of dependability are given. A structured view of dependability follows, according to a) the threats, i.e., faults, errors and failures, b) the attributes, and c) the means for dependability, that are fault prevention, fault tolerance, fault removal and fault forecasting.