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ASHRAE APPLICATION SI CH 19
DATA PROCESSING AND TELECOMMUNICATION FACILITIES
| contributor author | ASHRAE - American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. | |
| date accessioned | 2017-09-04T17:01:42Z | |
| date available | 2017-09-04T17:01:42Z | |
| date copyright | 01/01/2011 | |
| date issued | 2011 | |
| identifier other | XSENMEAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/125237 | |
| description abstract | Overview Environmental requirements of datacom equipment vary depending on the type of equipment and/or manufacturer. However, a consortium of server manufacturers has agreed on a set of four standardized conditions (Classes 1 to 4), listed in Thermal Guidelines for Data Processing Environments (ASHRAE 2008). A fifth classification, the Network Equipment—Building Systems (NEBS) class, is typically used in telecommunications. • Class 1: typically a datacom facility with tightly controlled environmental parameters (dew point, temperature, and relative humidity) and mission-critical operations; types of products typically designed for these environments are enterprise servers and storage products. • Class 2: typically a datacom space or office or lab environment with some control of environmental parameters (dew point, temperature, and relative humidity); types of products typically designed for this environment are small servers, storage products, personal computers, and workstations. • Class 3: typically an office, home, or transportable environment with little control of environmental parameters (temperature only); types of products typically designed for this environment are personal computers, workstations, laptops, and printers. • Class 4: typically a point-of-sale or light industrial or factory environment with weather protection, sufficient winter heating, and ventilation; types of products typically designed for this environment are point-of-sale equipment, industrial controllers, or computers and handheld electronics such as PDAs. • NEBS: per Telcordia (2001, 2006), and typically a telecommunications central office with some control of environmental parameters (dew point, temperature and relative humidity); types of products typically designed for this environment are switches, transport equipment, and routers. Because Class 3 and 4 environments are not designed primarily for datacom equipment, they are not covered further in this chapter; refer to ASHRAE's (2008) Thermal Guidelines for Data Center Environments for further information. | |
| language | English | |
| title | ASHRAE APPLICATION SI CH 19 | num |
| title | DATA PROCESSING AND TELECOMMUNICATION FACILITIES | en |
| type | standard | |
| page | 18 | |
| status | Active | |
| tree | ASHRAE - American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.:;2011 | |
| contenttype | fulltext |
