Virtualisation means Fewer Servers, Less Space, Less Power & Cooling

VMWare Overview

Virtualisation technology transforms the IT landscape and changes the way that people work.

Today's computer hardware was originally designed to run only a single operating system and a single application. Virtualisation changes that. It is now possible to run lots of operating systems and applications on the same hardware at the same time, increasing utilization and flexibility.

Virtualisation can help anyone who uses a computer save time, money and energy while achieving more with the computer hardware they already own.

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How Does Virtualisation Work?

It allows multiple virtual machines share a servers hardware resources without interfering with each other so that you can safely run several operating systems and applications at the same time on a single server.

The VMware Approach to Virtualisation

VMware places a thin layer of software on the computer hardware. This software layer creates virtual machines and contains a monitor that allocates resources transparently so that multiple operating systems can run concurrently on a single physical computer without even knowing it.

However, virtualising a single physical computer is just the beginning. VMware offers a robust virtualisation platform that can scale across hundreds of interconnected physical computers and storage devices to form an entire virtual infrastructure.

The Citrix Approach to Virtualisation

A thin software layer (known as the Xen hypervisor) runs directly on the hardware and provides an abstraction layer that allows each physical server to run one or more virtual servers, breaking the “hard-coding” that normally locks the operating system its applications to the underlying physical server. Each virtual server appears to users and to management software as if it were a separate physical computer, but in fact, many virtual servers may share one physical server - the density of consolidation is limited only by available resources.

Citrix XenServer’s virtualisation technology is widely acknowledged as the fastest and most secure virtualisation software in the industry, and is enhanced by taking full advantage of the latest Intel VT and AMD-V hardware virtualisation assist capabilities.