Rack units

This rack diagram example was redesigned from the Wikimedia Commons file: Rackunit.svg. [commons.wikimedia.org/ wiki/ File:Rackunit.svg]
Rack with sample component sizes including an A/ V half-rack unit.
"A rack unit, U or RU as a unit of measure describes the height of equipment[which?] 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 reflects 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. One rack unit is 1.75 inches (4.445 cm) high. (This equates to one vershok, an obsolete unit of measurement used officially in Russia until 1924.)
The size of a piece of rack-mounted equipment is frequently described as a number in "U". For example, one rack unit is often referred to as "1U", 2 rack units as "2U" and so on." [Rack unit. Wikipedia]
The example "Rack with sample component sizes including an A/ V half-rack unit" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Rack Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.

Rack with sample component sizes

Used Solutions

AREA_COMPUTER_NETWORKS >

Rack Diagrams

Rack units

The vector stencils library "Rack diagrams" contains 33 rack design elements for drawing the computer network server rack diagrams.
"A 19-inch rack is a standardized frame or enclosure for mounting multiple equipment modules. Each module has a front panel that is 19 inches (482.6 mm) wide, including edges or ears that protrude on each side which allow the module to be fastened to the rack frame with screws. ...
Equipment designed to be placed in a rack is typically described as rack-mount, rack-mount instrument, a rack mounted system, a rack mount chassis, subrack, rack mountable, or occasionally simply shelf. The height of the electronic modules is also standardized as multiples of 1.75 inches (44.45 mm) or one rack unit or U (less commonly RU). The industry standard rack cabinet is 42U tall. ...
19-inch racks in 2-post or 4-post form hold most equipment in modern data centers, ISP facilities and professionally designed corporate server rooms. They allow for dense hardware configurations without occupying excessive floorspace or requiring shelving." [19-inch rack. Wikipedia]
The clip art example "Rack diagrams - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Rack Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.

19 inch Rack with Rails

Rack

Rack rails

Rack rails (half-width)

Single rack rail

Xserve RAID

XServe

1U tray

1U spacer

2U server

1U Ethernet Switch/Hub

2U Ethernet Switch/Hub

1U power strip

1U KVM switch

1U patch panel

Rackmount UPS

Cisco switch (WS-C3560-24PS-S)

Cisco switch (WS-C3560-48TS-S)

Cisco switch (WS-C2960-48TT-L)

Cisco switch (WS-C2960-48TC-L)

Cisco switch (WS-C2960-24TT-L)

Cisco switch (WS-C2960-24TC-L)

7U rackmount LCD monitor

8U rackmount LCD monitor

Fiber optic patch panel (type A)

Fiber optic patch panel (type B)

Fiber optic patch panel (type C)

3U server

2U RAID array

3U RAID array

Managed UPS

1U 19'' LCD monitor keyboard

1U server

Used Solutions

Computer and Networks >

Rack Diagrams

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