Nitrous oxide, an EPA targeted greenhouse gas. Source: United States Environmental Protection Agency
Glossary - N
This is a glossary of older terms. While many of the definitions are unchanged, some of the definitions may be out of date and some of the terms may no longer be in use in the Data Center industry. This legacy glossary provides definitions for hundreds of information and communications technology (ICT) and data center terms and acronyms. Arranged alphabetically and searchable, the glossary explains common industry vocabulary.
N2O
Nameplate capacity
A metal tag attached to a machine or appliance that contains information such as brand name, serial number, voltage, power ratings under specified conditions, and other manufacturer supplied data. Source: United States Energy Information Administration
Nameplate Rating
Equipment shall be provided with a power rating marking, the purpose of which is to specify a supply of correct voltage and frequency, and of adequate current-carrying capacity (IEC 60950, Clause 1.7.1)
Natural Convection Overhead (NOH)
An air distribution and cooling strategy in which cooling coils are suspended from the ceiling and air is circulated by natural convection with no fans or ducting
NEBS
Formerly network equipment-building system. Provides a set of physical, environmental, and electrical requirements for a central office (CO) of a local exchange carrier (LEC). NEBS is a trademark of Telcordia Technologies, Inc.
NEC
National Electric Code
Network Interface Card (NIC)
An adapter circuit board installed in a computer to provide a physical connection to a network. Also called adapter cards or NIC cards. [ KEY=104862;UNSPSC=43201404;V23.07 || IDEA || ISO 22745-11 COMPLIANCE Source: eOTD ECCMA Open Technical Dictionary is an ISO 22745 compliant dictionary managed by ECCMA
Network Switch
Network device that filters, forwards, and floods frames based on the destination address of each frame. The switch operates at the data link layer of the OSI model. [KEY=104918;UNSPSC=43222612;V23.07 || IDEA || ISO 22745-11 COMPLIANCE Source: eOTD ECCMA Open Technical Dictionary is an ISO 22745 compliant dictionary managed by ECCMA
NFPA
National Fire Protection Association
NGO
Non-Governmental Organization. Source: United Nations GHS
NIH
National Institutes of Health. Source: ASHRAE
NIOSH
National Institute for Occupational Safety and Health
NIOSH
National Institute for Occupational Safety and Health. Source: ASHRAE
Non-raised Floor
Facilities without a raised floor utilize overhead ducted supply air to cool equipment. Ducted overhead supply systems are typically limited to a cooling capacity of 100 W/ft2 (Telcordia 2001)