In this paper the authors evaluate the CPU Consumption, Memory Utilization and Transfer Time between 5 Hypervisors XEN-PV, XEN-HVM, OpenVZ, KVM-FV and KVM-PV by using FTP and HTTP approaches. All the results are compared with the Real Environment. From the experimental results, the authors have concluded that OpenVZ and XEN-PV have better performance than other hypervisors. The worse performance is for KVM Hypervisor. In our paper we have used some scripts in order to evaluate the performance of these Hypervisors. Keyword: XEN-PV, XEN-HVM, OpenVZ, KVM-FV, KVM-PV, FTP approach, HTTP approach. 2011 Third International Conference on Intelligent Networking and Collaborative Systems 978-0-7695-4579-0/11 $26.00

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