Virtuozzo Containers is software, which is used to generate virtual servers on a physical machine. It allows VPS accounts to be generated and managed independently of one another, so each of them can have its own OS and a fixed and guaranteed volume of system resources, for example CPU time, disk space, physical memory, etc. You'll be able to stop, start or reboot the server, to set up many different software packages, to perform many different maintenance tasks, to set up firewall rules and even to reset the entire hosting server to its initial state using a very intuitive online interface. You may also keep an eye on the used and the available system resources and on the running processes, so as to have an idea if the eventual development of your sites will require a package upgrade as well. Virtuozzo gives you full control over your VPS and you can manage everything without any difficulty, even if you don't have much experience.