30HU

30HU refers to a standard rack unit size used in server racks and network cabinets. The "HU" stands for "half unit," and "30" indicates that the device or component occupies 30 half units of vertical space. This translates to 15 full rack units (15U), as one full rack unit is equivalent to two half units. This measurement system helps ensure compatibility and standardization in data centers and IT environments, allowing users to efficiently plan and manage equipment installation. Devices are typically measured in rack units (U), where 1U is equivalent to 1.75 inches (44.45 mm) in height. Therefore, a 30HU component would stand 26.25 inches (666.75 mm) tall within a standard 19-inch or 23-inch wide rack. This specific size might be used for custom server configurations, specialized equipment, or older hardware that didn't adhere to current common rack unit standards. Understanding these dimensions is crucial for proper space allocation, airflow management, and overall rack density optimization.