What is the difference between 1U/2U rack servers?

                  Rack servers are the first choice for most users due to their compact size and ease of deployment. Among them, the rack-mounted server with a thickness of 1U and 2U is the focus of users, and it has become a stage for major manufacturers to compete in design strength. So, where are the two servers with different thicknesses different in design? This issue is about to be discussed in this article.

What is "U"?

Speaking of 1U, 2U server, one of the "U" What does it mean? This of course does not refer to the number of server processors.

"U" refers to the thickness of the rack server in the server field. It is a unit that represents the external dimensions of the server. It is an abbreviation of Unit. The detailed size is from the American Electronics Industry Association (EIA). ) Decided. The reason for

server predetermined size, is to enable the server to maintain an appropriate size of the iron or aluminum on the rack. The rack has a screw hole for fixing the server, and it is aligned with the screw hole of the server and fixed by screws.

The thickness is 4.445cm as the basic unit. 1U is 4.445cm, and 2U is 2 times that of 1U is 8.89cm. In other words, the so-called "1U rack server" is a product that meets the EIA specifications and has a thickness of 4.445 cm.

As already explained, the difference 1U, 2U server only in that the thickness (height) aspect, it is only the difference in height of less than 4.5cm, the internal design on the server also had a significant distinction.

Glossary: ​​rack servers (Rack Server)

rack server is due to meet the company's densely deployed, in order to form a 19-inch rack as the server type standard width, height Then from 1U to several U. Placing the server in a rack is not only good for routine maintenance and management, but it can also avoid unexpected failures. First, placing the server does not take up too much space. The rack server is neatly discharged into the rack without wasting space. Secondly, the connecting wires and the like can also be neatly placed in the rack. Power cables and LAN cables can be routed in the cabinet to reduce the number of cables that are stacked on the ground, thus preventing accidents such as kicking off wires.

server rack size is generally wide (48.26cm = 19 inches) high (in multiples of 4.445cm). Since the cabinet is 19 inches wide, the cabinet that meets this requirement is sometimes referred to as a "19-inch cabinet."