Each and every notebook or desktop or server is run by an Operating System - the low-level software which communicates with the computer hardware, including peripheral devices such as a mouse and a printer, along with any applications that are currently installed on the 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 Operating System. On a web server, any application runs within the parameters defined by the OS as well - priority, physical memory, processing time, and so on. This is valid for both standard site scripts and server-side software like a media server. If a virtual server is set up on a physical one, there can be two different Operating Systems, referred to as guest OS and host OS, so you'll be able to set up a different software environment on the very same machine.
Multiple OS in VPS Servers
If you choose to acquire one of our VPS server packages, you will be able to choose one of the three Linux distributions which we supply for the Operating System of the servers - CentOS, Ubuntu and Debian. These are among the most widespread and most reliable server OSs out there and we offer them so that you have a choice for the software environment of your machine in case that you want to install some app with particular requirements with regards to the packages that have to be present on the web hosting server. We also offer three hosting Control Panels and which one of them you'll be able to use depends on the OS that you have picked. We leave the possibility to replace the server Operating System open, so if you want to use an application that requires an OS different from the one you already have, we can always re-install the VPS. In addition, we can keep the OS up-to-date weekly by installing all of the security updates which may be available.
Multiple OS in Dedicated Servers
In case you decide to purchase one of our dedicated servers, you'll find three Operating Systems on the registration page because we want to give you a larger choice for the system environment on the server as different applications may have certain requirements. CentOS, Ubuntu and Debian come with different modules developed by their vast support communities, so you can select any of these OSs and benefit from a stable and risk-free hosting service. Depending on your selection, you will also have different Control Panels to choose from. Of course, we can always replace the Operating System in case the one you've selected at first does not meet the requirements of the software that you'd like to run. We can also update your OS regularly to keep it as risk-free as possible through our Managed Services upgrade package.