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Title: Virtual Machine Scheduling in IaaS Providers
Abstract: Customers of Cloud providers run applications with different Quality of Service (QoS) requirements. However, the main item treated in SLAs is currently the time of use and the implications for their violation, neglecting other important factors in an SLA. To address this issue, we propose a scheduling model to alocate the requests of multiple users to resources from different IaaS providers in order to decrease the monetary cost without violating the request QoS. We introduce an SLA that considers three important aspects of QoS: reliability, performance and security. We present new strategies based on integer linear program (ILP) formulation and heuristic to compute the scheduling. In addition, we discuss the experimental results obtained from the implementation of our strategy.