Semi-Markov Availability Models for an Infrastructure as a Service Cloud with Multiple Pools
Oleg Ivanchenko, Vyacheslav Serhiiovych Kharchenko · 2016
Solving of tasks for Cloud Computing is impossible without main- taining of high availability level of Infrastructure as a Service (IaaS) Cloud. Several large IaaS Cloud providers try to solve this problem by means of in- creasing number of physical machines (PMs) in multiple pools. However, mi- grations of available PMs from one pool to another and also repairs, diagnostic instances of failed physical machines are quite complex task for modeling of availability for an IaaS Cloud. In this paper, we show how we can build Semi- Markov availability models with discrete states and how we can use it in order to determine availability level for the IaaS Cloud with three pools.