Virtuozzo Containers is software, which is used to make virtual servers on a physical server. It allows VPS accounts to be created and managed independently of each other, so each can have its unique OS and a fixed and guaranteed quantity of resources, for instance CPU time, disk space, physical memory, etc. You can start, stop or restart the server, to install various software packages, to do numerous maintenance tasks, to create firewall rules and even to reset the entire hosting server to its original state by using a very intuitive online interface. You can also keep close track of the used and the available system resources and on the running processes, so as to have an idea if the eventual growth of your sites will require a package upgrade as well. Virtuozzo will give you full control over your VPS and you're able to manage everything without any difficulty, even if you do not have much experience.