Virtuozzo Containers is software, which is used to create virtual servers on a physical hosting server. It allows VPS accounts to be generated and controlled separately of each other, so each can have its own OS plus a fixed and guaranteed volume of system resources, including CPU time, disk space, physical memory, etc. You will be able to start, stop or restart the server, to set up various software packages, to perform numerous maintenance tasks, to set up firewall rules and even to reset the entire hosting server to its original state using a very user-friendly online interface. You may also monitor the used and the available system resources and on the active processes, so as to have an idea whether the eventual development of your sites will require a package upgrade too. 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 a lot of experience.