1 Rack Unit Measurement

A rack unit abbreviated u or ru is a unit of measure defined as 1 3 4 inches 44 45 mm.

1 rack unit measurement. The rack unit was created by the electronic industries association eia to ensure the. A rack unit abbreviated u or ru is a unit of measure defined as 1 75 inches. Take up in a standardized mounting system described below. 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.

Cabinet or rack width is almost always 19 inches. Widths of 23 inches 584 mm and 30 inches 762 mm are also made but rarely encountered by consumers the heights of the panels are standardized at multiples of 1 so. 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. When leasing space in a colocation facility or planning for an on site network cabinet or closet customers should focus on four key issues.

One rack unit u is 1 75 inches. The rack unit is a standard measurement for server height. One rack unit 1 symbol u or sometimes ru. One u is 1 75 inches 44 45mm.

The eia standard was created for cabinets racks and panels as well as other associated equipment. 1 2 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. The standard rack at 19 inches is 42u. The width of the equipment that can be mounted inside the rack is less.

The panel width is standardized at 19 inches 482 6 mm. One u is 1 75 inches 44 45mm. One rack unit is 1 75 inches. A single rack unit is exactly 1 75 44 45 mm in height although many manufacturers will make their equipment slightly smaller than this to ease installation into racks where things were not spaced as accurately as they should be.

Depth may range from less than 30 to more than 40 inches and height is measured in rack units below. 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. It sets a standard for system spacing mounting bezel clearance as well as placement of the mounting holes in the mounting flange. 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.

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. The eia standard was created for cabinets racks and panels as well as other associated equipment.