Virtuozzo Containers is software, that's used to make virtual servers on a physical machine. It allows VPS accounts to be set up and controlled separately of each other, so each one can have its unique Operating System in addition to a fixed and guaranteed amount of resources, for instance CPU time, disk space, physical memory, et cetera. You can start, stop or restart the server, to install many different software packages, to perform various maintenance tasks, to create firewall rules and even to reset the entire hosting server to its initial state through a very intuitive online interface. In addition, you can monitor the used and the available system resources and on the active processes, so as to have an idea if the eventual growth of your web sites will require a package upgrade as well. Virtuozzo gives you full control of your VPS and you can control everything easily, even if you don't have a lot of experience.