Server - Rack, blades and towers

Unlike tower servers, offices, 1U server rack traditionally come in use, 3U, 4U, 6U or 2U rack are to be installed. The numbers to the names, the server rack exactly how many of us, they occupy on the shelves. The server is a 1U rack-bay 1U, 2U and 4U occupy occupy two four, while a standard rack size has to 42U:

The 1U server used by industry for the use of data-hosting and preferred because they're very compact(Only 4.4 cm high), with which you are installing a large number of servers per rack. The main limitations of this format is the restrictions on air (because of small internal) use, prohibit the use of processors with high energy consumption and the need for special coolers and fans, all running at an additional cost . In addition to installing the core components of open spaces usually 2 or 4 hard drives 3.5 "(after the provision of other components) and a single expansion card,horizontal, installed with an uppercut.

Then there is a 2U server. Using source "normal" power and cooling, and then end up being a bit 'less. The largest inland makes the format more suitable for 2U server with two or more processors, or processors to use the high consumption. The amount is not sufficient to install to expansion cards, such as tower servers, but you can use column (as in the case of 1U), or use the tabs at half height (the lower panels,have half the height of the normal disks).

Finally, we have the biggest server, 3U or 4U use. There are 6U server, but they are rare: This format is typically used by the disk array chassis and blade server (see topic below). With a 3U server or higher eliminates the problems with space, so that expansion cards to be fit and installed vertically in a large number of hard drives in removable bays, but the server will take up more space in the rack,what the cost to the data management center, where you should pay to use an additional cost per pin.

Another format that is becoming increasingly popular, are the server blade (blade is the "knife" the word for small), a brilliant idea to further increase the density of servers and allows the sharing of components in the data center, as power supplies and optical media.

The idea is that instead of 10 1U servers, with 10 sources (or 20 ifThe sources used were redundant), 20 network cable (each server typically uses two cables, one for the network and the other for management or redundancy), as well as electrical wires, cables used by KVM, and so on, you can use a single chassis, with a corresponding number of blade servers.

Each blade is a full server with its independent processor, memory, network card and hard drives. Its small size, blade servers often use low-power processors and hard drives 2.5 ". At first itwas the sharing of Transmeta and VIA processors, but ended up being almost completely from Intel and AMD processors, multiple cores are replaced much faster, but still relatively Economics. In the case of hard disk drives, hard drives, 2.5 "are the favorites for the provision of access times lower (but loses in terms of transfer rate), as well as power consumption.

Thought the whole blade system are the same. Therefore, if you plan to jump in knife campaignYou should find the best fit blade system for your case. Check the comparisons below to help you compare between them is: