Cooling Data Center is one of the most critical requirements of any data center design and management. There are various approaches to cooling which includes perimeter and rack based cooling methodologies. In perimeter cooling an important approach is "Creating Hot and Cold Aisles" to create natual air flow. In this methodology cold air is released from perforated tiles placed in raised floor while hot air retruns from ducts in false ceiling.

The Cold and Hot aisle design is achieved by stacking equipment racks in a row in alternate position such that cold intake and hot discharge from equipments in rack rows face each other. This facilitates zoning of cold air in-take for equipments placed inside the rack and hot air released from equipments inside rack.