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Computer Rack U Measurement

This unit of measurement refers to the space between shelves on a rack. 1U is equal to 1.75 inches. For example, a rack designated as 20U, has 20 rack spaces for equipment and has 35 (20 x 1.75.) inches of vertical usable space. Rack and cabinet spaces and the equipment which fit into them are all measured in U.

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A rack unit, U or RU is a unit of measure that describes the height of equipment designed to mount in a 19-inch rack or a 23-inch rack. The 19-inch (482.6 mm) or 23-inch (584.2 mm) dimension refers to the width of the equipment mounting frame in the rack including the frame; the width of the equipment that can be mounted inside the rack is less.

The hole spacing for standard 19″ racks on the mounting flange is spaced in groups of three holes. This three hole group is defined as a Rack Unit (RU) or sometimes just call a “U”. 1U occupies 1.75″ (44.45 mm) of vertical space.

One rack unit is 1.75 inches or 4.445 centimeters. To quick convert rack units into inches use our rack unit conversion calculator or click Here for a PDF U Conversion Chart.

The hole spacing for standard 19″ racks on the mounting flange is spaced in groups of three holes. This three hole group is defined as a Rack Unit (RU) or sometimes just call a “U”. 1U occupies 1.75″ (44.45 mm) of vertical space.

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A rack unit (abbreviated U or RU) is a unit of measure defined as 44.50 millimetres (1.75 in). 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.

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A rack unit is a unit of measure used to describe the height of a server, network switch or other similar device mounted in a 19-inch rack or a 23-inch rack. One rack unit is 44.45 mm (1.75 in) high. One rack unit is 44.45 mm (1.75 in) high.

The 1U, 2U, 3U, 4U, 5U, 6U and 7U are all different sized rackmount servers, and the U following the number is short for unit.The number indicates the size of the rackmount, 1U being the smallest rackmount and 7U being the biggest rackmount. Below is a listing of each of the different units and their dimensions, although the width and height of a.

U u [1] the SI symbol for the unified atomic mass unit, as defined in 1960 and accepted by both chemists and physicists. u [2] a common replacement for the Greek letter µ as a symbol for the micron or micrometer. The correct symbol for this unit is µm. u-a common replacement for µ- as a symbol for the SI prefix micro- (10-6).The symbol is frequently.

A U is a standard unit of measure for designating the height in computer enclosures and rack cabinets. A U equals 1.75 inches. For example, a 4U chassis is 7 inches high.

A 42U rack would have an internal rack unit height dimension of 73.5 inches (1.8669 m). However, each 42U rack manufacturer’s sever rack external dimensions will vary. Below are charts of the specifications, sizes, dimensions for.

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A 23-inch (580 mm) rack is used for housing telephone (primarily), computer, audio, and other equipment though is less common than the 19-inch rack. The size denotes the width of the faceplate for the installed equipment. The rack unit is a measure of vertical spacing and is common to both the 19 and 23 inch racks.