Software Rejuvenation and its Application in Distributed Systems

Alonso, Javier; Trivedi, Kishor S.

doi:10.1002/9781119131151.ch11

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2016

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“…Markov-based models are frequently adopted to analyze the availability of complex systems [27]. This kind of model usually recognizes the system as a stochastic process with several states.…”

Section: Problem Formulationmentioning

confidence: 99%

A Heuristic Time Sharing Policy for Backup Resources in Cloud System

2016

KSII TIIS

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Cloud computing promises high performance and cost-efficiency. However, most cloud infrastructures operate at a low utilization, which greatly adheres cost effectiveness. Previous works focus on seeking efficient virtual machine (VM) consolidation strategies to increase the utilization of virtual resources in production environment, but overlook the under-utilization of backup virtual resources. We propose a heuristic time sharing policy of backup VMs derived from the restless multi-armed bandit problem. The proposed policy achieves increasing backup virtual resources utilization and providing high availability. Both the results in simulation and prototype system experiments show that the traditional 1:1 backup provision can be extended to 1:M (M≫1) between the backup VMs and the service VMs, and the utilization of backup VMs can be enhanced significantly.

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Section: Problem Formulationmentioning

confidence: 99%