# BookRiff

If you don’t like to read, you haven’t found the right book

## How do I calculate my server rack size?

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).

### How tall is a 42U rack?

Chatsworth 42U Rack – Dimensions and Specifications:

Maximum External Height External Width External Depth
82.30 in. (2090 mm) 24.00 in. (610 mm) 27.3 in. (693 mm) 27.00 in. (690 mm) 34.40 in. (874 mm) 40.40 in. (026 mm) 43.40 in. (1102 mm) 48.40 in. (1229 mm)

#### How big is 1U rack?

1.75 inches
1U refers to a height of 1.75 inches or 4.445 cm. This is the space between the rack shelves that is available for device installation. The size of rack mountable devices is often specified in ‘U’ with a number. A one-rack device is a 1U, while a 2U device requires two rack units.

How many servers can fit in a 42U rack?

For example, if a rack fits 14 3U enclosures and each of HP’s 3U enclosure can hold 20 of the company’s low end blades, a 42U rack’s maximum density–in HP’s scheme of things– is 280 servers.

What is 1 U in a rack?

One U is 1.75 inches (44.45mm); the standard rack, at 19 inches, is 42U. Rack servers and other hardware designed to be rack-mounted are manufactured in multiples of 1.75 inches and specified in multiples of rack units, usually 1U, 2U, 3U or 4U. Racks are designed to hold equipment of those sizes.

## What are the dimensions of a 1U server?

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 the standard depth for a 4 post rack?

Each rail can accommodate two vertical PDUs or cable managers side-by-side (four items per enclosure). Maximum usable internal depth of 37 inches/94 cm (front to rear rail). Weight ratings of 3000 lbs (1360.8 kgs) stationary and 2250 lbs (1020.6 kgs) rolling.

#### How big is a 9U server rack?

That said, it is possible to understand the notation used for server rack sizing: 1U, 2U, 3U and so on. For example, a 9U rack has a width of 19 inches (for a standard rack) and a height of 15.75 inches (1.75 multiplied by 9).

Where to use a 9U wall mount rack?

The SRW9U SmartRack 9U Low-Profile Switch-Depth Wall-Mount Rack Enclosure Cabinet is designed to house EIA-standard 19-inch rack equipment in network wiring closets, retail locations, classrooms, back offices and other areas with limited floor space where you need equipment to be secure, organized and out of the way.

How big is one U in a rack?

One U is 1.75 inches (44.45mm); the standard rack, at 19 inches, is 42U. Rack servers and other hardware designed to be rack-mounted are manufactured in multiples of 1.75 inches and specified in multiples of rack units, usually 1U, 2U, 3U or 4U. Racks are designed to hold equipment of those sizes.

## How tall is a 7U rack in cm?

Here is a “Rack Unit Calculator” grid: Rack Units Height (in) Height (ft) Height (cm) 7U 12.25″ 1.02′ 31.1 cm 8U 14″ 1.17′ 35.6 cm 9U 15.75″ 1.31′ 40 cm 10U 17.5″ 1.46′ 44.5 cm