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Consolidation using virtualization is here to stay. It works - it saves money by increasing computing throughput per watt of power consumed, freeing up floor space, providing head room for growth, facilitating load migration, and disaster recover. The virtualization savings entitlement can be multiplied if power and cooling infrastructure is modified or upgraded to take advantage of the savings opportunity that virtualization offers. Given the impact of virtualization on data center power densities, three principle approaches should be considered to help manage the heat produced by higher densities: spreading the load, supplemental cooling, and designation of high density and low density areas within the data center. As each data center virtualization outcome is unique, care should be taken to examine the impact on power and cooling.
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