Virtuozzo Containers is software, that's used to generate virtual servers on a physical machine. It allows VPS accounts to be generated and managed separately of each other, so each can have its very own Operating System in addition to a fixed and guaranteed volume of resources, such as CPU time, disk space, physical memory, etc. You'll be able to stop, start or reboot the server, to install different software packages, to perform a variety of maintenance tasks, to set up firewall rules and even to reset the entire server to its initial state by using a very intuitive world-wide web interface. You may also monitor the used and the available resources and on the running processes, to have an idea whether the eventual development of your sites will require a package upgrade too. Virtuozzo will give you full control of your VPS and you are able to control everything effortlessly, even when you don't have a lot of experience.