Data Centers | Design Guidelines | Informative Data Center Design: Electrical and Mechanical System Clearances & Best Practices Efficient data center design isn’t just about installing the latest technology—it also involves strategic planning around space, airflow, and accessibility. Ensuring proper electrical and mechanical clearances is critical for operational efficiency, cooling effectiveness, and safety compliance. Key Design Considerations Access Floor Alignment When using an access (raised) floor system, align the front edge of ITE cabinets flush with the front edge of the floor tiles. This alignment improves cold aisle airflow, especially when allocating at least two tile positions for perforated tiles in front of the cabinets. Perimeter Clearance Maintain a minimum clearance of 1.2 meters (4 feet) between equipment cabinets/racks and any perimeter wall or adjacent equipment installed along perimeter walls. This provides sufficient space for maintenance, airflow, and safety. CRAC Unit to Cabinet Clearance If the raised floor serves as the air distribution plenum, ensure a minimum clearance of 1.8 meters (6 feet) between ITE cabinets and CRAC (Computer Room Air Conditioning) units to allow optimal airflow and minimize turbulence. Perforated Tile Placement To maintain cooling efficiency, the closest perforated tile should be positioned at least 2.4 meters (8 feet) from CRAC units. This spacing ensures proper mixing and delivery of cold air before it enters the cold aisle. Proper spacing and thoughtful floor layout are essential for a high-performing, energy-efficient, and maintainable data center. Following these guidelines ensures better airflow, easier equipment servicing, and improved system longevity.