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Carla Safigan

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Finding the appropriate virtualization technology to fit an organization's requirements depends on the needs of the environment, combined with the feature sets of each virtualization architecture. Oftentimes, organizations find that a single approach doesn't complete the picture and multiple virtualization technologies are required. The two basic server virtualization architectures, hardware and operating systems (OS), are each designed with different workloads and environments in mind. Some environments are more suited to OS virtualization, specifically those with naturally high levels of homogeneity or those with requirements for high-performance or consolidation ratios. Other environments, where varying OS support is a high priority, may work better with hardware virtualization. Hardware Virtualization: This approach virtualizes the entire server from the hardw... (more)

The Other Virtualization Technology... OS Virtualization

Server virtualization is rapidly becoming a common undertaking for IT departments. As a matter of fact, many organizations are now taking the next step: evaluating their virtualization investment to see whether it's helped them achieve the server consolidation goals they previously set. And along the way many IT departments have had some surprises such as a "performance tax," a reduction in server or application performance as a result of virtualizing applications using hardware virtualization technology. With the advent of operating system virtualization, this evaluation process... (more)