Role and usage of reliability indices in computer application having a primary and secondary unit

Abstract

A cold standby system is a type of redundancy arrangement used in different fields, including computing, healthcare, manufacturing sector and industrial processes. In a cold standby system, a secondary system is kept in a state of readiness but is not actively running or processing data. Instead, it remains in a powered-off or idle state until it is required in case of any failure or performance degradation of the main unit. In this paper, I have mentioned the role and usage of important Reliability indices like mean time to system failure, mean sojourn time, Steady State Availability, Busy period of the server due to repair, expected number of visits by the server, expected profit earned by the system in (0, t) etc. which can be used to design the complex computer application architecture. These indices can be derived when the system is exposed to different weather conditions – normal and abnormal weather. The semi-Markov process and regenerative point technique can be used to calculate the different reliability indices which helps to assess the overall performance of the system in different conditions.