Data and server cabinets, also known as server racks or server enclosures, are specialized cabinets designed to house and organize servers, networking equipment, and other IT infrastructure components in a data center or server room. These cabinets provide a secure and controlled environment for the equipment, offering features such as cooling, cable management, and physical security.r: Cabinets come in various sizes, typically measured in rack units (U), with a standard rack unit being 1.75 inches (44.45 mm) in height. Common sizes include 42U, 36U, 24U, and 12U. The form factor determines the physical dimensions and shape of the cabinet.