Virtuozzo Containers is software, that's used to create virtual servers on a physical machine. It allows VPS accounts to be generated and controlled separately of each other, so each one can have its own OS and a fixed and ensured amount of system resources, including CPU time, disk space, physical memory, etc. You'll be able to start, stop or restart the server, to set up various software packages, to do a variety of maintenance tasks, to set up firewall rules and even to reboot the entire server to its initial state employing a very intuitive online interface. In addition, you can keep track of the used and the available resources and on the active processes, so as to have an idea when the eventual development of your sites will require a package upgrade too. Virtuozzo will give you complete control over your VPS and you're able to manage everything without difficulty, even if you do not have a lot of experience.