Computer Science – Distributed – Parallel – and Cluster Computing
Scientific paper
2009-12-09
T.T.Lwin and T.Thein, "High Availability Cluster System for Local Disaster Recovery with Markov Modeling Approach", Internatio
Computer Science
Distributed, Parallel, and Cluster Computing
International Journal of Computer Science Issues, IJCSI Volume 6, Issue 2, pp25-32, November 2009
Scientific paper
The need for high availability (HA) and disaster recovery (DR) in IT environment is more stringent than most of the other sectors of enterprises. Many businesses require the availability of business-critical applications 24 hours a day, seven days a week, and can afford no data loss in the event of a disaster. It is vital that the IT infrastructure is resilient with regard to disruption, even site failures, and that business operations can continue without significant impact. As a result, DR has gained great importance in IT. Clustering of multiple industries standard servers together to allow workload sharing and fail-over capabilities is a low cost approach. In this paper, we present the availability model through Semi-Markov Process (SMP) and also analyze the difference in downtime of the SMP model and the approximate Continuous Time Markov Chain (CTMC) model. To acquire system availability, we perform numerical analysis and SHARPE tool evaluation.
Lwin T. T.
Thein T.
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