# What is a 1U rackmount?

## What is a 1U rackmount?

For electronic equipment racks (e.g., 19 or 23 inches wide), the term 1U is used to define one rack unit of height. To be precise, 1U equals 1.75-inches (44.45mm) of rack height. Therefore, a 2U rack mount height would be 2 x 1.75”, which equals 3.5-inches high.

## How wide is a 19 rack?

A 19-inch rack is a standardized frame or enclosure for mounting multiple electronic equipment modules. Each module has a front panel that is 19 inches (482.6 mm) wide.

How many U rack do I need?

One “Rack Unit” is equal to 1.75″ in height. To calculate internal useable space of a rack enclosure, simply multiply the total amount of Rack Units by 1.75″. For example, a44U rack enclosure would have 77″ of internal usable space (44 x 1.75).

### What is the meaning of 1U?

The U represents number of units, meaning that 1U fills one unit of space in the server chassis. In most server chassis designs and servers used in them, 1U is equivalent to 1.7 inches high, 19 inches wide and 17.7 inches deep.

### What is a 1U power supply?

1U POWER SUPPLY. FSP Group provides standard 40.5 mm 1U size power supply with efficiency level from 80 plus to platinum level. Available in 250W~700W . 1U form factor provide compact flexibility for a small industrial computer rack-mount chassis.

Why is IT called a 19 rack?

One of the first terms you’ll learn in the world of server is ’19 inch rack’ because this is a standard that the industry revolves around. 19 inches refers to the mountable width of servers and the racks that they will be placed in.

#### How many U are in a cabinet?

RU (sometimes referred to as U) stands for “rack unit,” a unit of measurement for server cabinets. One RU is typically 1.75 inches. A 42RU rack will hold 42 1RU units or 21 2RU units. All hardware manufactured for rack storage will be multiples of RU, anywhere from 1RU up to 48RU.

#### What is 1U or 2U?

The ‘U’ in any server description is short for “RU” which stands for Rack Unit — this is the standardized designation for the form factor of the server: 1U = 1.75″ in height or thickness. 2U is 1.75″ x2 = 3.5 inches. All rackmount servers are 19″ in width.

What does U mean in data cabinets?

rack unit
The “U” actually stands for the vertical measure of a server rack. Basically, a rack unit comprises the height of a server rack with a 19-inch or 23-inch height. Since a typical full-sized rack comes in at 4U, the 2U rack servers and 1U rack servers are considered half-rack servers.

## How many U are in a quarter rack?

11U
Quarter Rack – Typically 11U.

## Is Flex ATX 1U?

A range of 1U Flex ATX power supplies, sometimes refered to as Mini 1U the Flex ATX PSU is suitable for a wide range of applications, commonly used in Shuttle systems, CCTV, 1U servers and many more small form factor based systems such as Mini ITX.

What is Flex ATX power supply?

Flex ATX power supplies (PSUs) are notably smaller than standard ATX PSUs, so they are mostly used in small chassis hosting Flex ATX or Mini ITX motherboards or in rackmount servers with limited height, such as 1U racks.

### What is a 4U rack?

Rack Height A 4U rack or cabinet can house equipment whose total height when placed into the rack is no more 7inches or 17.78cm (1.78m) with 1U=1.75inches or 44.45mm.

### What does 1U mean?

U is the standard unit of measure for designating the vertical usable space, or height of racks (metal frame designed to hold hardware devices) and cabinets (enclosures with one or more doors). This unit of measurement refers to the space between shelves on a rack. 1U is equal to 1.75 inches.

What does U server mean?

What is a U (measurement)? A U is a standard unit of measure for designating the height in computer enclosures and server rack cabinets. A rack unit is abbreviated as U or RU with a number prefix. A U equals 1.75 inches, so a 4U chassis would be 7 inches high. A 40U rack cabinet would be 70 inches high.

#### How many U is a half rack?

22U
Half Rack – Typically 22U. Quarter Rack – Typically 11U.

#### What makes this enclosure suitable for use as a chassis?

This enclosure’s bottom and four sides are higher strength steel with cooling vents placed along the side and assembled along the joints with screws, making them suitable to use as a complete equipment chassis.

What is a rackmount enclosure?

Our slimline 1U steel and aluminum rackmount enclosure is a simple, elegant way to mount any number of low profile electronics securely in a standard equipment rack. These sturdy rackmount enclosures have a textured black painted finish on both the 300mm deep steel chassis and the predrilled 1U by 19 inch aluminum faceplate.

## What are the dimensions of a 37-1u rackmount chassis?

Inside Dimensions (mm/in): 425 x 295 x 35 / 16.73in x 11.61in x 1.37in (Approx.) For more information, refer to the Model 37-1U Rackmount Chassis Owner’s Manual. If you plan to custom machine the chassis, refer to the Model 37-1U Rackmount Chassis .DWG CAD file.