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Open AccessArticle

A Novel System Reliability Modeling of Hardware, Software, and Interactions of Hardware and Software

by Mengmeng Zhu 1,* and Hoang Pham 2
1
Department of Textile Engineering, Chemistry and Science, North Carolina State University, Raleigh, NC 27606, USA
2
Department of Industrial and Systems Engineering, Rutgers University, Piscataway, NJ 08854, USA
*
Author to whom correspondence should be addressed.
Mathematics 2019, 7(11), 1049; https://doi.org/10.3390/math7111049
Received: 10 September 2019 / Revised: 25 October 2019 / Accepted: 28 October 2019 / Published: 4 November 2019
(This article belongs to the Special Issue Statistics and Modeling in Reliability Engineering)
In the past few decades, a great number of hardware and software reliability models have been proposed to address hardware failures in hardware subsystems and software failures in software subsystems, respectively. The interactions between hardware and software subsystems are often neglected in order to simplify reliability modeling, and hence, most existing reliability models assumed hardware subsystems and software subsystem are independent of each other. However, this may not be true in reality. In this study, system failures are classified into three categories, which are hardware failures, software failures, and hardware-software interaction failures. The main contribution of our research is that we further classify hardware-software interaction failures into two groups: software-induced hardware failures and hardware-induced software failures. A Markov-based unified system reliability modeling incorporating all three categories of system failures is developed in this research, which provides a novel and practical perspective to define system failures and further improve reliability prediction accuracy. Comparison of system reliability estimation between the reliability models with and without considering hardware-software interactions is elucidated in the numerical example. The impacts on system reliability prediction as the changes of transition parameters are also illustrated by the numerical examples. View Full-Text
Keywords: system reliability modeling; Markov process; software-induced hardware failures; hardware-induced software failures; hardware-software interactions system reliability modeling; Markov process; software-induced hardware failures; hardware-induced software failures; hardware-software interactions
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Zhu, M.; Pham, H. A Novel System Reliability Modeling of Hardware, Software, and Interactions of Hardware and Software. Mathematics 2019, 7, 1049.

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