The three primary dimensions to consider are rack height (measured in rack units or U), rack width (most commonly the industry-standard 19-inch format), and rack depth (typically ranging from 24 inches to 48 inches). This SmartRack® Modular Data Center is composed of IT rack, cooling and service enclosures that form a performance optimized data center (POD). The SRP-2R-2C12-M's dual IT rack enclosures. Server racks are critical for data centers, providing essential support, cooling, power distribution, and security for IT systems. Each of these factors influences equipment fit, airflow management, cable routing. Today, server racks are available in a wide range of sizes, each with different pros and cons.