How much space does a server rack need? Rack Location
There should be enough room around the front, rear, sides and top of a rack for cooling air flow and access for engineers. A rule of thumb is to allow up to 6 standard floor tiles (600×600mm) as a space onto which to place a server rack.
What is server rack space? A rack unit (abbreviated as U, less commonly seen as RU) is a unit of measurement applied to equipment racks and the servers, disk drives and other devices that they contain. One U is 1.75 inches (44.45mm); the standard rack, at 19 inches, is 42U.
What is the standard size of a server rack? Common Server Rack Sizes
The most popular modern server rack and cabinet dimensions are 24 inches (600mm) wide, 42 inches (1066.80mm) deep, and 73.6 inches (1866.90mm) tall. Those dimensions support most IT equipment and can generally handle power loads of 1kW to 3kW per rack.
How is rack space calculated? Rack Unit Spacing
The total rack unit is measured from the middle of the rack’s top hole of the previous U space to the top hole of the current U space. Even though the spacing between the holes is 0.625”, the remaining 0.5” comes from the distance between the bottom hole to the top hole of a RU.