Computer Room Requirements for High Density Rack Mounted Servers Rhys Newman Oxford University Outline Why do we need computer rooms? Why in the past. Why in the future. Design of the environment. Cooling Humidity Power Proposal at Oxford Physics Conclusion Why do we need them (Past)
Will be needed for the immediate future, but the Grid will reduce the need long term.
All this irrespective of how well you design the air cooling systems!
No magic bullet of simply importing external air and venting it to the outside!!!