Standard Server Rack Sizes

Server rack depth illustration of rack depth.

Standard server rack sizes.

Server rack cabinet enclosures on the other hand can be a non standard 18u or 37u. The industry standard for data centers the 42u universal server rack is compatible with a wide variety of servers and rack mountable networking equipment including dell hp austin hughes ibm kendall howard great lakes martin enclosures chatsworth and apc products. Newer server rack cabinets come with adjustable mounting rails allowing the user to place the rails at a shorter depth if needed. Server racks can range from 0 to 50 inches in depth but are commonly seen at 24 and 48 inch depths.

The 42u rack is completely customizable and can handle even the heaviest loads up. It is most frequently used as a measurement of the overall height of 19 inch and 23 inch rack frames as well as the height of equipment that mounts in these frames whereby the height of the frame or equipment is expressed as multiples of rack units for example a typical full size rack cage is 42u. 1u one rack unit is approximately 1 75 in height 2u is 3 5 in height and so on. For example a 9u rack has a width of 19 inches for a standard rack and a height of 15 75 inches 1 75 multiplied by 9.

19 inch server racks can vary in qualities. A rack unit abbreviated u or ru is a unit of measure defined as 1 3 4 inches 44 45 mm. That said it is possible to understand the notation used for server rack sizing. 1u 2u 3u and so on.

A standard 19 inch server rack cabinet is typically 42u in height 600 millimetres 24 in wide and 36 inches 914 40 mm deep.