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In the current naming scheme, towers are designated by T, racks by R, and blades by M (for modular). [1] The 19″ rack-servers come in different physical heights expressed in rack units or U. Most modern servers are either 1U or 2U high while in the past the 4U was more common.
As of the end of Q2 2015, Facebook's Prineville data center had a power usage effectiveness (PUE) of 1.078 and its Forest City data center had a PUE of 1.082. [ 15 ] In October 2015, Allied Control has a claimed PUE ratio of 1.02 [ 16 ] through the use of two-phase immersion cooling using 3M Novec 7100 fluid.
A 10-outlet rack-mount PDU (front), connected to a UPS (bottom unit on right) A temporary PDU, distributing 120 volt AC power at an outdoor event Cabinet PDU with access doors open A power distribution unit ( PDU ) is a device fitted with multiple outputs designed to distribute electric power, especially to racks of computers and networking ...
Low-power servers are more energy-efficient than conventional servers in data centers. They use the technology of smartphone computing, which tries to balance performance with energy consumption. The first low-power servers were introduced in 2012 by large IT providers such as Dell and Hewlett-Packard. Used correctly, low-power servers can be ...
The ML (Modular Line) line of servers features a modular design that is designed for maximum system expansion, while the DL (Density Line) line of servers consists of powerful, density-optimized servers designed for rack mounted use. [4] Though not officially labeled as such, this generation of ProLiant servers is also referred to as "Gen1".
A standard 19-inch server rack cabinet is typically 42u in height, 600 millimetres (24 in) wide, and 36 inches (914.40 mm) deep. [18] This comprises a volume of 974 L, or just under a cubic meter. Newer server rack cabinets come with adjustable mounting rails allowing the user to place the rails at a shorter depth if needed.
Prior to the Generation 10 servers, the naming convention was as follows: First digit – Height of the server in rack units; Second digit – Generation of server (up to 9th generation) Third digit – Server type (5 for rack server, 0 for tower server, although tower servers could be outfitted with a rack chassis)
BEE Star Label is a program run by the Indian government's Bureau of Energy Efficiency under Ministry of Power that promotes energy efficiency. The program provides information on the energy consumption of products and devices using different standardized methods. The program for rating electrical appliances started in May, 2006.