TY - JFULL AU - V. V. Singh and Yusuf Ibrahim Gwanda and Rajesh Prasad PY - 2015/12/ TI - Reliability Analysis of Computer Centre at Yobe State University Using LRU Algorithm T2 - International Journal of Mathematical and Computational Sciences SP - 706 EP - 713 VL - 9 SN - 1307-6892 UR - https://publications.waset.org/pdf/10006579 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 107, 2015 N2 - In this paper, we focus on the reliability and performance analysis of Computer Centre (CC) at Yobe State University, Damaturu, Nigeria. The CC consists of three servers: one database mail server, one redundant and one for sharing with the client computers in the CC (called as a local server). Observing the different possibilities of the functioning of the CC, the analysis has been done to evaluate the various popular measures of reliability such as availability, reliability, mean time to failure (MTTF), profit analysis due to the operation of the system. The system can ultimately fail due to the failure of router, redundant server before repairing the mail server and switch failure. The system can also partially fail when a local server fails. The failed devices have restored according to Least Recently Used (LRU) techniques. The system can also fail entirely due to a cooling failure of the server, electricity failure or some natural calamity like earthquake, fire tsunami, etc. All the failure rates are assumed to be constant and follow exponential time distribution, while the repair follows two types of distributions: i.e. general and Gumbel-Hougaard family copula distribution. ER -