Every single desktop or notebook or server is run by an Operating System - the low-level program which communicates with the hardware, including peripherals such as a mouse and a printer, along with any apps that are currently 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 Operating System. On a web server, any app runs within the parameters defined by the OS as well - priority, physical memory, processing time, and so on. This goes for both standard site scripts and server-side software like a media server. In case a virtual server is generated on a physical one, there can be two separate Operating Systems, named 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 decide to acquire one of our VPS server packages, you shall be able to pick one of the three Linux distributions which we supply for the OS of the servers - CentOS, Ubuntu and Debian. These are among the most popular and most dependable server OSs available on the market and we offer them in order to give you a choice for the software environment of your machine if you need to install some app with particular requirements regarding the packages that need to be present on the server. We also offer three internet hosting Control Panels and which one of them you may use depends on the OS that you have selected. We leave the possibility to replace the server Operating System open, so when you want to use an app that requires an OS different from the one you already have, we can always re-install the VPS. We can also keep the OS up-to-date weekly by installing all the security updates which may be released.
Multiple OS in Dedicated Servers
The dedicated server packages that we offer come with as many as three different Operating Systems to select from. They are all Linux distributions - Ubuntu, CentOS and Debian, and not only do they have no license charges, but they are also regarded as the most stable and secure OSs. We offer three different ones because each one of them is supported by a separate community. The packages which you could add on your hosting server are different and this may matter if you need to install some piece of software with particular requirements regarding the hosting environment. In this light, the web hosting Control Panel which you can select for the dedicated server is also determined by the OS that you'll pick. You can select any of the three Operating Systems throughout the order process, but if needed, we can always set up the server anew with another one upon your request. As an optional service that you could add to the package at any time, we can update the OS regularly so as to keep it as secure as possible.