Virtualisation is a software technology which enables one single computer to run several (sometimes different) virtual guest operating systems (OS).
Essentially, virtualisation can enable you to run more than one environment on the same hardware. For example, with virtualisation you can run a windows operating system (like XP) and a Linux Operating system (like Ubuntu) on the same computer. By implementing virtualisation, you let different operating systems and applications share the resources of one computer.
This technology is necessary because most of today’s computers (X86 Computers) were designed to run one operating system on one physical machine. With this mode of operation, the resources of each machine are underutilised most of the time.
What virtualisation does in practice is that it separates a user from the kind of hardware they are using.
For example you could be running windows on a Mac platform or you could be running a Linux OS on your windows personal computer (PC).
It is important to note that virtualisation is not a server-only technology; in fact virtualisation can be applied throughout your business. Starting from the desktop, you can “virtualise” nearly all aspects of your IT infrastructure.
What is being claimed at the moment is that virtualisation is set to dramatically change the way in which we compute.
There are different types of virtualisation: Server Virtualization, Data or Storage Virtualisation and Desktop Virtualisation.
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