Quantifying Independence Redundancy in Systems: Measurement, Factors, and Impact Analysis

Abstract: Redundancy represents a strategy for achieving high availability. However, various factors, known as singleness factors, necessitate corresponding redundancy measures. The absence of a systematic approach for identifying these singleness factors and the lack of a quantifiable method to assess system redundancy degrees are notable challenges. In this paper, we initially present methodologies to evaluate system redundancy, specifically quantifying independent redundancy in complex systems. This approach considers the interactions among various factors that influence redundancy, treating different factors as distinct dimensions to comprehensively account for all potential impact factors. Additionally, we propose methodologies to calculate the Independent Redundancy Degree (IRD) when combining or removing system components, offering insights into system resilience during integration or separation. Furthermore, we broaden the scope of known singleness factors by exploring time and space dimensions, aiming to identify additional related singleness factors. This process helps us pinpoint critical system aspects that necessitate redundancy for enhanced fault-tolerance and reliability. The verification results underscore the influence of different dimensions and reveal the significance of addressing weak dimensions for enhancing system reliability.