Evaluation of Virtual Machine Performance and Virtualized Consolidation Ratio in Cloud Computing System

The physical server transition to virtualized infrastructure server have encountered crucial problems such as server consolidation, virtualization performance, virtual machine density, total cost of ownership (TCO), and return on investments (ROI). This paper introduces five distinct virtualized cloud computing servers (VCCS), and gives appropriate assessment to five well-known hypervisors in VCCS. We thus have taken the analysis of virtualized server and shared storage accessing performance as well as the estimation of consolidation ratio and TCO/ROI in server virtualization. As a result, VM performance nearly achieves the same level for all hypervisors, but the estimation of VM density and TCO/ROI are totally different among them. Finally, we have the recommendation to choose the ESX server if you need a scheme with the highest ROI and the lowest TCO in server virtualization. Alternatively, Proxmox VE would be another best choice if you like to save the initial investment at first and own a high-performed virtualized infrastructure in server virtualization.