What is a rack server?

The rack server does not look like a computer, but like a switch, it has 1U (1U = 1.75 inches), 2U, 4U and other specifications. The rack server is installed in a standard 19-inch cabinet. This type of structure is mostly a functional server.

to the information service companies (e.g., ISP /ICP /ISV /IDC), the first thing to consider when choosing the physical parameters of the server the server volume, power consumption, heat, etc., generally because the information service enterprises The large-scale dedicated equipment room is used to uniformly deploy and manage a large number of server resources. The equipment room usually has strict security measures, a good cooling system, and multiple backup power supply systems. The cost of the equipment room is quite expensive. How to deploy more servers in a limited space is directly related to the service cost of the enterprise. Generally, a rack server with a mechanical size conforming to the 19-inch industry standard is selected.

Rack servers are also available in a variety of sizes, such as 1U (4.45cm high), 2U, 4U, 6U, 8U, and more. A typical 1U rack server is the most space-saving, but has poor performance and scalability, making it suitable for some fixed-use areas of business. More than 4U products have high performance and good scalability. They generally support more than 4 high-performance processors and a large number of standard hot-swappable components. Management is also very convenient, manufacturers usually provide the corresponding management and monitoring tools, suitable for key applications of large traffic, but large size, space utilization is not high.