Issue: 2017/Vol.27/No.3, Pages 65-80
ESTIMATING THE RELIABILITY OF THE ELEMENTS OF CLOUD SERVICES
Iuliia Ignatova
, Anatoliy Biehun
Cite as: I. Ignatova, A. Biehun. Estimating the reliability of the elements of cloud services. Operations Research and Decisions 2017: 27(3), 65-80. DOI 10.5277/ord170305
Abstract
Cloud technologies are a very considerable area that influence IT infrastructure, network services and applications. Research has highlighted difficulties in the functioning of cloud infrastructure. For instance, if a server is subjected to malicious attacks or a force majeure causes a failure in the cloud’s service, it is required to determine the time that it takes the system to return to being fully functional after the crash. This will determine the technological and financial risks faced by the owner and end users of cloud services. Therefore, to solve the problem of determining the expected time before service is resumed after a failure, we propose to apply Markovian queuing systems, specifically a model of a multi-channel queuing system with Poisson input flow and denial-of-service (breakdown).
Keywords: cloud technologies, performance evaluation, Markovian queuing systems, Poisson input flow
Received: 2 February 2017 Accepted: 16 October 2017