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Server sprawl is a common issue found in many businesses today due to our increasing reliance on Information Technology. It is caused by the tendency to install applications on separate physical machines in order to avoid conflict, which leads to a relatively low level of average CPU utilisation, often less than 10%. Virtualisation is being used extensively to consolidate the physical servers created by “server sprawl” onto a much smaller physical footprint generating significant hardware, administration and power savings for many businesses throughout the world.
Virtualisation is achieved by an operating system called a Hypervisor, which is the first software that is installed onto a bare metal physical machine. The Hypervisor acts as a “host” operating system onto which multiple “guest” operating systems are subsequently installed. The job of the Hypervisor is to decouple the physical machine hardware from each of the “guest” operating systems in order that multiple virtual machines, called guest operating systems, can run in isolation, side-by-side on the same physical machine.
In fact as many as 10-15 virtual servers are often installed onto a single physical machine using modern 64bit dual socket quad core. Average CPU usage will be much higher – perhaps more like 60-70% – so much greater IT resource utilisation can be achieved.
Server consolidation savings alone are enough to generate a healthy return on investment for almost all virtualisation projects but, since virtual machines are encapsulated into files, making it possible to rapidly save, copy and provision a virtual machine, they present a whole set of extremely cost effective business continuity and disaster recovery possibilities. Full systems (fully configured applications, operating systems, BIOS and virtual hardware) can be moved, within seconds, from one physical server to another for zero-downtime maintenance and continuous workload consolidation.
Konverge has been committed to virtualisation for years. Through sustained investment, we have designed and implemented virtual architectures for a wide variety of clients, establishing us as one of the leading virtualisation consultancies in Australia. Key to this success has been the development of our unique Virtualisation Solution Framework which provides a tested platform for the successful delivery of each solution and ensures the maximum benefit for your business.
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