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The ETSI rack is defined by the European Telecommunications Standards Institute (ETS 300 119). The distance of the right edge of the right mounting rail to the left edge of the left mounting rail is 535 millimetres (21.1 in). As 535 mm is very close to 21 inches, these racks are sometimes called 21-inch racks. The gap between the posts is 500 ...
The department of Motor Vehicles was within the Department of Finance in 1921. In 1935, the Department of Motor Vehicles was created. [7] Still only vehicles that used the highways were subject to registration, and the two classes of Driver's Licenses was Operator's and chauffeur's. The Highway Patrol was tasked with enforcement of the vehicle ...
Rack with sample component sizes including an A/V half-rack unit. A rack unit (abbreviated U or RU) is a unit of measure defined as 1 + 3 ⁄ 4 inches (44.45 mm). [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 ...
Rack-mounted 11th-generation PowerEdge servers. PowerEdge is a server line by Dell, following the naming convention for other Dell products: PowerVault (data storage) and PowerConnect (data transfer & switches).
In a standard server-rack configuration, one rack unit or 1U—19 inches (480 mm) wide and 1.75 inches (44 mm) tall—defines the minimum possible size of any equipment. The principal benefit and justification of blade computing relates to lifting this restriction so as to reduce size requirements.
Below is a list of NEMA enclosure types; these types are further defined in NEMA 250- Enclosures for Electrical Equipment. Each type specifies characteristics of an enclosure, but not, for example, a specific enclosure size. Note that higher numbers do not include the lower-numbered tests. For example, types 3, 4 and 6 are intended for outdoor ...
RS-1U, a type of K-5 (missile) J-1U, a model of Auster Workmaster; SSH 1U (WA); see Washington State Route 503; An abbreviation for 1 Utama; An abbreviation for "One Union" or "One Big Union", a concept and slogan used by industrial unionists, including the IWW. #1U is used also as a hashtag on social media by labor activists and organizations ...
The square-hole racks did arise in an effort to make these racks both cheaper to make (stamping the square holes is cheaper than threading the rails) and more convenient (hanging rails with integrated clips is easier and faster than using screws). Non-threaded round-hole racks were never a standard, though they popped up from time to time.