Watch the video here: http://www.6sigmadcx.com/media/videos/EC-plug-fans.php
Myth-busting Series EC Plug Fans is a video follow up to a previous white-paper that can be found here: https://www.linkedin.com/pulse/20141003191236-18056786-an-energy-efficiency-drive-that-can-cost-more-than-it-saves
ANY physical hardware infrastructure changes will impact the cooling distribution throughout the DataCenter. It will cause a knock-on effect on deployment and capacity planning.
The cooling distribution provided by the new, energy-efficient fans, must therefore be evaluated before the decision to proceed is made. The only way to do this is through Simulation.