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 one can have its own OS and a fixed and warranted volume of system resources, such as CPU time, disk space, physical memory, et cetera. You are able to start, stop or reboot the server, to install different software packages, to do a variety of maintenance tasks, to set up firewall rules and even to reboot the entire hosting server to its initial state using a very user-friendly web interface. You may also keep track of the used and the available system resources and on the running processes, so as to have an idea when the eventual development of your sites will require a package upgrade as well. Virtuozzo will give you complete control over your VPS and you are able to control everything effortlessly, even if you don't have a lot of experience.