Twelve Virtualization Myths Debunked - Slide 9

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Ratio myth: Virtualization only works well when we consolidate more than 10 physical machines into one virtual machine.

This common myth says a virtualization project can only be successful when the ratio (or consolidation number) is higher, such as 10-to-1, or even higher. Organizations may exclude servers whose resource requirements would make the consolidation ratio dip to below 10-to-1. A lower, more realistic consolidation ratio of underused physical systems to suitably sized and used virtual systems is 3-to-1. This can still provide a positive ROI. The benefits of virtualization, such as greatly simplified disaster recovery, provide cost advantages beyond consolidation ratios.

Virtualization, one of the fastest growing trends in IT, lets any organization run multiple server functions on a single computer. Virtualization also makes it easier to start up new server emulations quickly. In case of failure, organizations can move server functions to new computers without interrupting service. Beyond saving a lot of money on large sites, virtualization is also moving to PC networks and serves as a foundation for cloud computing. Many myths surround virtualization. Some started when past limitations still existed. Other myths get started and spread by those who have separate agendas or those who have a limited understanding of virtualization. Here are some of the most common myths, identified by Global Knowledge.

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