Virtuozzo Containers is an excellent virtualization solution, that's used to install virtual machines working separately of one another on a physical server. Each VPS has an Operating System of its own and it can be controlled from your Virtuozzo Control Panel where you can find quite a few options which will provide you with complete control of the whole machine. Using an intuitive, point and click graphical interface, you can start, stop or reboot your server at any time, to perform various kinds of maintenance tasks, to restore a backup, to install numerous server-side software modules, and a lot more. The resource monitoring software tool will give you comprehensive info about the overall performance of the VPS, therefore if you expand your sites, you can easily view whether your current configuration can handle the extra load, or if you will need some upgrade. If needed, you will also have the option to re-install the whole VPS container to its default state, resetting any changes you have made.