Water-Cooled Data Center Equipment (with additives). Source: TGG
Glossary - W
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 While many of the definitions are unchanged, some of the definitions may be out of date and some of the terms may no longer be in use in the Data Center industry.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.
W-C
W+
A thermal guideline for the environment liquid cooled equipment operates based on non-failure conditions. It presumes the liquid has a supply temperature over 45 Celsius temperature or over 113-degree Fahrenheit. Source: ASHRAE
W17
ASHRAE allowable thermal envelope as defined in Thermal Guidelines for Data Processing Environments that liquid cooled equipment operates within based on non-failure conditions. It presumes the liquid has a supply temperature of 17 Celsius temperature or 63-degree Fahrenheit. Source: ASHRAE
W27
ASHRAE allowable thermal envelope as defined in Thermal Guidelines for Data Processing Environments that liquid cooled equipment operates within based on non-failure conditions. It presumes the liquid has a supply temperature of 27 Celsius temperature or 81-degree Fahrenheit. Source: ASHRAE
W32
ASHRAE allowable thermal envelope as defined in Thermal Guidelines for Data Processing Environments that liquid cooled equipment operates within based on non-failure conditions. It presumes the liquid has a supply temperature of 32 Celsius temperature or 90-degree Fahrenheit. Source: ASHRAE
W40
ASHRAE allowable thermal envelope as defined in Thermal Guidelines for Data Processing Environments that liquid cooled equipment operates within based on non-failure conditions. It presumes the liquid has a supply temperature of 40 Celsius temperature or 104-degree Fahrenheit. Source: ASHRAE
W45
ASHRAE allowable thermal envelope as defined in Thermal Guidelines for Data Processing Environments that liquid cooled equipment operates within based on non-failure conditions. It presumes the liquid has a supply temperature of 45 Celsius temperature or 113-degree Fahrenheit. Source: ASHRAE
Wafer
Any thin but rigid plate of solid material, especially of disk shape. A term used commonly to refer to the thin slices of silicon used as starting material for the manufacture of integrated circuits
Warm Up
A period of time prior to when the actual measurement is taken, where the workload has been already started in an effort to get the SUT to a stable and consistent state
Water Economizer
See economizer, water
Watt (W)
Watts. Source: ASHRAE
Wet-bulb Temperature
See temperature, wet-bulb
WGBT
Wet-bulb globe temperature. A measure of the heat stress in direct sunlight, which takes into account temperature, humidity, wind speed, sun angle, and cloud cover (solar radiation). Source: ASHRAE
Whiskers, Iron
Crystalline metallurgical phenomenon whereby iron grows tiny hairs, which can become airborne under certain conditions and settle in electronic equipment
Whiskers, Tin
A crystalline metallurgical phenomenon whereby tin grows tiny hairs, which can become airborne under certain conditions and settle in electronic equipment
Whiskers, Zinc
A crystalline metallurgical phenomenon whereby zinc grows tiny hairs, which can become airborne under certain conditions and settle in electronic equipment
Wholesale Data Center
Wholesale data centers became popular in 2007 and 2008 as some companies such as Facebook, Microsoft and Yahoo needed more than just a rack or a cage but wanted a much larger space and often times did not have enough time to build a new site. These facilities are commonly referred to as multi-tenant data centers (MTDC). The tenant space within the MTDC is traditionally a 10,000-sf hard walled suite, sf and companies are charged based on the amount of power allocated to them. There are some variable costs associated with these properties, but this is significantly less expensive than any of the aforementioned. Digital Realty Trust is considered the largest and these types of landlords tend to be mostly located within NFL cities. If a client signs a 1MW lease for 10 years the rent would be comparable to an office transaction leasing 60,000sf for 10 years at $28/rsf. Source: SOIR
Workload
The units of work that are to be performed during a benchmark run
WSC
World Semiconductor Council. Source: GEC