“…During the past two decades, the topic of disasters has been studied extensively by many researchers; the interested readers are referred to the works of Towsley and Tripathi (1991), Artalejo and Gómez-Corral (1998), Krishna Kumar and Arivudainambi (2000), Economou Sudhesh et al (2016) analyzed an N-policy M/M/1 queue with disastrous breakdown, and derived the closed-form expressions of system size probabilities in transient state and in steady state. For the discrete-time queueing models, there also exist a large volume of references (see, e.g., Atencia and Moreno, 2004;Park et al, 2009;2010;Atencia, 2014;2016). There are also a number of recent publications closely related to queueing systems with disasters.…”