Each desktop or notebook or web server is run by an Operating System - the low-level program that interacts with the hardware equipment, including peripherals such as a mouse or a printer, and any apps that are currently installed on your system. Any program input through a command line or a Graphical User Interface (GUI) is processed by sending an Application Program Interface (API) request to the Operating System. On a web server, every single application runs within the parameters defined by the OS as well - priority, physical memory, processing time, and so on. This goes for both standard Internet site scripts and server-side software such as a media server. When a virtual server is created on a physical one, there can be two independent Operating Systems, referred to as guest OS and host OS, which means that you will be able to set up a different software environment on a single machine.
Multiple OS in Dedicated Web Hosting
If you decide to acquire one of our dedicated servers, you will find three Operating Systems on the registration page since we want to give you a broader choice with regard to the system environment on your machine as different apps can have certain requirements. CentOS, Ubuntu and Debian include different modules developed by their huge support communities, so you can select each of these OSs and take advantage of a reliable and safe hosting service. Depending on your selection, you will also have different Control Panels to choose from. Needless to say, we can always change the Operating System if the one you've selected initially doesn't meet the requirements of the software which you'd like to run. We can also update the OS routinely in order to keep it as risk-free as possible using our Managed Services upgrade package.