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Introduction to virtualization

No change in size, 10:49, 22 August 2006
Short comparison
The three techniques differ in complexity of implementation, breadth of OS support, performance in comparison with standalone server, and level of access to common resources. For example, VMs have wider scope of usage, but poor performance. Para-VMs have better performance, but can support fewer OSs because of need to modify the original OSs.
Virtualization on the OS level provides the best performance and scalability compared to other approaches. Performance difference of such systems can be as low as 1…3%, comparing with that of a standalone server. [[Virtual environmentEnvironment]]s are usually also much simpler to administer as all of them can be accessed and administered from the host system. Generally, such systems are the best choice for server consolidation of same OS workloads.
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