1 Rack Unit Size

How tall is a server rack.

1 rack unit size. What is 1u or one rack unit. 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. Although the width and height of a rackmount may be standard the depth of a rackmount may change as shown below. 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 panel width is standardized at 19 inches 482 6 mm. If your rackmount server is going to be placed in a constrained area confirm the exact dimensions with the rackmount manufacturer. By 1911 the term was also being used in railroad signaling. One rack unit 1 inches of height of the equipment s rectangular front panel.

One u is 1 75 inches 44 45mm. 19 x 1 75 x 19 7. 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 rack unit is a standard measurement for server height. The term relay rack appeared first in the world of telephony. 1u is 1 75 or 44 45 mm. One rack unit is 1 75 inches.

Standard racks with widths of 23 inches 584 mm and 30 inches 762 mm are also made but rarely encountered by consumers. The standard rack at 19 inches is 42u. It is most frequently used as a measurement of the usable space of 19 inch rack frames as well as the height of equipment that mounts in these frames where the height of the equip ment is expressed as multiples of rack units. When leasing space in a colocation facility or planning for an on site network cabinet or closet customers should focus on four key issues.

Dimension w x h x d 1u. These racks offer room for equipment that us 19 wide 482 6 mm and have variable height expressed in rack units. Depth may range from less than 30 to more than 40 inches and height is measured in rack units below. A rack unit abbreviated u or ru is a unit of measure defined as 1 75 inches.

Cabinet or rack width is almost always 19 inches. A rack unit abbreviated u or ru is a unit of measure defined as 1 3 4 inches 44 45 mm. 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. Symbol u or sometimes ru.

To quickly convert rack units into inches use our rack unit conversion calculator or click here for a pdf u conversion chart. The industry standard rack cabinet is 42u tall however 45u racks are also common. It sets a standard for system spacing mounting bezel clearance as well as placement of the mounting holes in the mounting flange. One rack unit u is 1 75 inches.