What is Virtualization?

What is Virtualization?

When engaging with corporate customers, it is not uncommon to hear IT professionals say, “We are virtualizing 70% of our servers.” While the practice of virtualization is common in the enterprise, it is not widely understood outside of IT. The purpose of this post is to provide a high-level overview of virtualization and its benefits.

Virtualization means partitioning one physical server into multiple virtual servers called virtual machines (VMs). Each VM is isolated as if it were a separate physical server. Computing, networking and storage resources are then pooled together and delivered to each VM via hypervisor technology. VMs can run different operating systems and (multiple) applications while sharing the resources of the same physical server. In addition, because each VM is isolated, if one crashes, it does not affect the performance of the other VMs. Virtualization differs from private cloud in that virtualization is a fixture of an IT estate while private cloud is offered as an on-demand service.

While there are many benefits associated with virtualization, below are five:
* Business Continuity – Reduce downtime of mission critical applications and systems.
* Deployment Flexibility – Quickly and easily automate the delivery of virtual applications and desktops.
* Improve Utilization – Improve efficiency by increasing the use of server resources from 25% (average) to 60%+.
* Reduce Costs – Require less hardware (consolidation), less power (energy) and less space (sprawl).
* Simplify Management – Deploy, manage and monitor applications and servers from one console.

As the complexity of business and IT have continued to increase, efficiency has not kept pace. Virtualization has enabled IT to reverse this trend by simplifying infrastructure to do more with less. While Microsoft is gaining share, VMware continues to be the most trusted and widely deployed virtualization platform on the market.

All contents copyright © 2012, Josh Lowry. All rights reserved.


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