What are the advantages of cold aisle containment?

Cold aisle containment is designed to eliminate hot spots in server racks, allows more space within the server rack to be used and reduce overall cooling cooling costs. Cold-aisle containment can be used with raised access floor plenums and/or overhead ducted supplies to improve cold airflow to the server racks. The plenum is then open space between the structural concrete slab and the underside of the raised access floor system. As well as for cooling, the plenum may also be used for cable runs via conduits.