Before someone can understand the more complex portions of servers, one must understand its basics. Servers are essentially dedicated computers, so its architecture is always identical. However, the finer details of the aforementioned architecture and the components of the server are where each server will vary from one another. Some will have certain specifications, such as the 1U rackmount server.
The term "rackmount" refers to the fact that the server is designed to be permanently attached on a rack -- think a metal bookshelf, but designed for servers. For example, a blade server is generally mountable on a rack, and it holds what is known as a server blade. Blade servers are a type of chassis that usually houses many thin and modular circuit boards, which are the server blades. Blades are, for all intents and purposes, servers attached to a card that contain memory, processors, integrated network controllers and input/output ports.
People who are new to the world of rackmount servers may experience a bit of confusion, and the same is true with figuring out the standard height measurements in the industry. Specifically, the 1U part of the name specifies that the chassis that houses the server has a measurement of one Rack Unit Height. Some simple math can further break this down; remember Algebra class and consider the U as a variable that is defined as 1.75 inches. In other words, 1U means taking the 1.75 inches and multiplying it by one, so a 1U server is 1.75 inches tall. This type of simple math applies no matter the measurement; for example, a 2U is 3.5 inches tall, a 3U is 5.25 inches tall and a 4U is 7 inches tall.
Racks can also come in the form of Rackmount U measurements. However, this does not make things more complicated. In fact, this measurement can be left as U form, and only simple logic follows from this point. Rather than having to remember to multiply each of the server heights by a variable letter, one can keep in mind that a rack is only as tall as the amount of 1U servers it can house. For example, if a rack happens to be 20U high, then this simply means that the rack is capable of housing 20 1U servers onto it. Like the former measurement, this does not change with each measurement.
Simply remember that the U is merely a variable when the height in inches must be known, and calculating the height with this in mind becomes a very easy task.
Author is a freelance copywriter. For more information about 1u rackmount server, please visit http://www.germane.com
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