VMware vSphere is the the most popular kind virtualization software. It based on full virtualization. All virtual machines are controlled by shared operating system (ESXi). Now virtualization is one of the most perspective IT fields. Community has been realised that virtual servers is a great tool for resources economy. Today we don’t really need to place on server only one system, when there could be a place for dozens. Virtualization can save not only financial part of IT-business, but ecological environment too.