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Posted by Richard Fichera on August 12, 2010
I’ve been getting a number of inquiries recently regarding benchmarking potential savings from consolidating multiple physical servers onto a smaller number of servers using VMs, usually VMware. The variations in the complexity of the existing versus new infrastructures, operating environments, and applications under consideration make it impossible to come up with consistent rules of thumb, and in most cases, also make it very difficult to predict with any accuracy what the final outcome will be absent a very tedious modeling exercise.
However, the major variables that influence the puzzle remain relatively constant, giving us the ability to at least set out a framework to help analyze potential consolidation projects. This list usually includes:
Finally we come to the most important item on our list of variables, impact on operations. This is the BIG variable. Depending on how you change your IT processes to take advantage of the new capabilities you have acquired with your move to a consolidated and virtualized environment, you can effect major changes in operating costs at all levels, from provisioning to maintenance to business unit service requests.
Our net take – know your capital and other costs, but focus on reduced opex, particularly those enabled by the new technology and tools.
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