Virtuozzo Containers is software, which is used to generate virtual servers on a physical machine. It allows VPS accounts to be set up and managed separately of each other, so each one can have its very own OS as well as a fixed and guaranteed amount of system resources, such as CPU time, disk space, physical memory, and the like. You're able to start, stop or restart the server, to set up a variety of software packages, to do many different maintenance tasks, to set up firewall rules and even to reset the entire server to its initial state through a very user-friendly online interface. In addition, you can monitor the used and the available system resources and on the running processes, in order to have an idea when the eventual growth of your sites will require a package upgrade too. Virtuozzo will give you full control of your VPS and you'll be able to control everything with ease, even when you do not have much experience.