What is a U?

The space used by your server(s) is measured in Rack Units (or 'U'). This is the unit of measurement used for defining the vertical space used. A 'U' is equivalent to 1.75 inches (4.45cm).

1U Server= 1.75" of Vertical Rack Space
2U = 3.5" of Vertical Rack Space
4U = 7.00" of Vertical Rack Space

A full rack contains 40 to 42U 1/4 Rack=10U (10 servers of 1U) Half rack =20 U (20 Servers of 1U)
  • 0 Users Found This Useful
Was this answer helpful?

Related Articles

What is Colocation?

Colocation gives you space at a data center to put your servers. With colocation you have...

Who needs Co-location hosting?

Customers who have full control over all aspects of their website and the way it operates are...

Do you provide 24x7x365 access?

Yes. Escorted access to our co-lo data center is available to clients 24 hours a day, 7 days a...

How much power is provided?

We provide each colocation rackspace customer with 20Amps of power which is included in your...

Do you accept tower servers and desktops in the DC?

We do, however they are not recommended because they often do not contain server grade hardware...