Virtualisation and Network Services

Virtualisation is a technology in which an application, guest operating system or data storage is ed away from true underlying hardware or software. Server virtualisation is one virtualisation technology which uses a software layer called a hypervisor to emulate the underlying hardware. This includes the CPUs memory, I/O and network traffic. The guest operating system with true hardware is now doing so with software emulation of that hardware and the guest operating system has no idea it is on its on virtualised hardware. While the performance of this virtual system is not equal to the performance of this operating system running on true hardware, virtualization works because most guest operating systems and applications do not need the full underlying hardware.