Every personal computer or web server is run by an Operating System - the low-level program which communicates with the hardware equipment, including peripherals such as a mouse or a printer, as well as any applications that are installed on your system. Any program input using a command line or a Graphical User Interface (GUI) is processed by sending an Application Program Interface (API) request to the OS. On a server, every single application runs within the parameters specified by the OS as well - priority, physical memory, processing time, etc. This is valid for both standard Internet site scripts and server-side software such as a media server. In case a virtual server is created on a physical one, there can be two independent Operating Systems, named guest OS and host OS, so that you can set up a different software environment on the same machine.
Multiple OS in Dedicated Servers
We offer three Operating Systems with our dedicated server plans - CentOS, Ubuntu and Debian. They're all different Linux distributions and we offer them not only because they're totally free so they won't increase the price of your new web server, but also because they are very secure and stable. Each one of them is supported by a large community of developers, so you'll be given the option to choose from thousands of software packages that you can install on your server if the app that you would like to employ has certain requirements. The Operating System will also determine what internet hosting Control Panel you can use because the Control Panels that we offer run on particular OSs only and because we would like to give you as much freedom as possible, we offer a couple of OSs and multiple Control Panels. If you choose a server with a certain OS, we will change it upon request if it turns out that you'll need another one. We will also keep the OS updated on a weekly basis as part of our optional Managed Services upgrade.