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On the 720 line, Dell currently offers two rack-model servers: the Poweredge R720 [126] and the R720XD [127] — where the latter offers the option to extend the system to up to 26 internal disks. The Poweredge 620 series offer models for rack, tower and a ½ height blade-server M620. [125]
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)
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".
All power supplies and fan-units are inserted from the back and are all hot-swappable. [2] The power supplies are located at the bottom of the enclosure while the fan-units are located next to and in between the switch or I/O modules. Each power-supply is a 2700-watt power-supply and uses 208–240 V AC as input voltage.
Home servers can be implemented do-it-yourself style with a re-purposed, older computer, or a plug computer; pre-configured commercial home server appliances are also available. An uninterruptible power supply is sometimes used in case of power outages that can possibly corrupt data.
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.
But did you know that even when they're turned off, appliances and electronic gadgets gobble up energy, costing you money? The average U.S. household spends about $1,900 a year on energy costs ...
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.