Virtuozzo Containers is software, that is used to make virtual servers on a physical server. It allows VPS accounts to be set up and managed independently of each other, so each of them can have its very own Operating System and a fixed and ensured volume of resources, including CPU time, disk space, physical memory, and the like. You'll be able to start, stop or restart the server, to install many different software packages, to do many different maintenance tasks, to create firewall rules and even to reboot the entire server to its original state employing a very intuitive web interface. You may also keep track of the used and the available system resources and on the running processes, in order to have an idea whether the eventual growth of your sites will require a package upgrade as well. Virtuozzo offers you full control over your VPS and you are able to manage everything easily, even when you do not have much experience.