Software reliability and system reliability
Résumé
The chapter is mainly aimed at showing that, by using deliberately simple mathematics, the classical reliability theory can be extended in order to be interpreted from both hardware and software viewpoints. This being referred to as "X-ware". It will be shown that, even though the action mechanisms of the various classes of faults may be different from a physical viewpoint according to their causes, a single formulation can be used from the reliability modeling and statistical estimation viewpoints. Having a single formulation exhibit several advantages, both theoretical and practical, such as a) easier and more consistent modeling of hardware-software systems and of hardware-software interactions, b) adaptability of models for hardware dependability to software systems and vice versa, and c) mathematical tractabliiy. The second Section gives a general overview of the dependability concepts. The third Section is devoted to the failure behavior of an X-ware system disregarding the effect of restoration actions.
Domaines
Informatique et langage [cs.CL]
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