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Virtualization Essay

315 words - 2 pages

There are three types of virtualization, full virtualization, paravirtualization and OS virtualization. Full virtualization uses hypervison, which keeps each of the virtual serves separate and unaware of each other. Also with full virtualization each server can run a different operating system at the same time. Paravirtualization is a software interface that is similar but not identical to that of the underlying hardware. In paravirtualization each server is aware of each other and they work together cohesively. OS ...view middle of the document...

One by using virtualization BART raised their server capacity by over 50%, which means, that BART didn’t need as many servers. By having fewer servers, they were able to increase physical space and reduce energy costs. Also by using virtualization it will now make it easier for adjustments as the organization continues to grow.
Some of the risks that could possible come with virtualization could be accessibility, confidentiality or security issues. An example of accessibility issue would be if the hypervisor went down, then the organization could possible losing several applications. A confidentiality error could be if an administrator made a typo when bringing a virtual network up, that error could possibly allow someone access to information that they shouldn’t have and the administrator may not realize their mistake. And finally a security issue could be an attack on the virtualization infrastructure such as virtual machine jumping.
Virtualization is considered to be a green technology. Virtualization helps organizations decrease power usage and hardware waste. It also reduces electrical consumption, space requirements, air-conditioning needs and construction requirements. All these things combined help make virtualization a green technology.

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