The companies who do not have much budget to invest on virtual technology are small scale company with simple information or big scale company who wants to concentrate and merge on non-core operations small information system. Regardless the changes or alert color of the economy, nothing is attractive as "free"! There are many pay software in the market and our research is based on free server virtualization software "VMware vSphere Hypervisor" as implement example. If server virtualization can be proceed with free cost, for the corporations that wants to virtualize the server and connect with IT trend globally, there is really no reason not to be assessed.