Implementing Hot and Cold Air Containment in Existing Data Centers.PNG
In fact, The Green Grid views an air management strategy as “the starting point when implementing a data center energy savings program”. However, most existing data centers are constrained to certain types of containment strategies. Note that this paper is for existing data centers.

Containment solutions can eliminate hot spots and provide energy savings over traditional uncontained data center designs. The best containment solution for an existing facility will depend on the constraints of the facility. While ducted hot aisle containment is preferred for highest efficiency, cold aisle containment tends to be easier and more cost effective for facilities with existing raised floor air distribution. This paper investigates the constraints, reviews all available containment methods, and provides recommendations for determining the best containment approach.