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In computing, a virtualization engine is the concept of giving a holistic view of all the resources in the entire network infrastructure. The holistic view is independent of the physical data storage devices and their geographic location.
A good example of virtualization is IBM's virtualization engine which offers a common way to address component level devices.
Current virtualization engines are in sharp contrast to the partitioning based virtualization that is limited in its scope and only offers a logical view of data storage partitions.