Data Center Industry Terms
- A Record
- A pointer linking a name to an IP address
- ACL
- Access Control List.
- ACPI
- Advanced Configuration and Power Interface.
- ACWP
- Actual Cost for Work Performed
- AD
- Active Directory
- Adapter
- A device that enables otherwise incompatible patch cords, data ports, servers, or networking devices to connect to one another.
- ADO
- Microsoft® ActiveX® Data Objects.
- AGP
- Advanced Graphics Port. Graphics card interface for high performance graphics.
- Alternating Current
- Electrical current which periodically reverses direction, usually several times per second.
- Ampere
- The measurement unit for electrical current.
- AMR
- Audio/Modem Riser. An Intel specification that aims to eliminate legacy support for audio and modem functions on motherboards. It allows analogue functions (i.e. both audio and modem) to be handled by a separate riser card.
- AMS
- Acquisition Management System.
- ANSI
- American National Standards Institute.
- APC
- American Power Conversion. Company that has made a name for itself supplying UPSs.
- API
- Application Programming Interface. The definition of procedures (and protocols) that a software application can make use of.
- APP
- Asynchronous Pluggable Protocols.
- Appletalk
- Macintosh computers networking protocol.
- Application Failover
- The capability of an application to recover from the failure of a database that the application is connected to and for the application to switch over to using the surviving instance thereby providing no loss of data or continuity.
Also known as ‘run-time failover’.
- Approved for Construction (AFC) Drawing
- A final drawing approved by the Design
Engineer and local municipality for the purpose of construction
- Arc Flash
An arcing fault is the flow of current through the air between phase conductors or phase and neutral or ground. An arcing fault can release tremendous amounts of concentrated radiant energy at the point of the arcing in a small fraction of a second resulting in extremely high temperatures, a tremendous pressure blast, and shrapnel hurling at high velocity.
- As-built
- A construction document illustrating how a building was constructed.
- ASCII
- American Standard Code for Information Interchange. In ASCII the letters of the alphabet, digits and various punctuation symbols are assigned a unique 7 bit number (0-127).
On most systems there is also an additional set of 128 "extended ASCII codes" that are used to represent a variety of other symbols. These extended codes are not part of the ASCII standard.
- ASDL
- 1. Asynchronous Digital Subscriber Line. Provides a permanent link to the internet.
2. Asymmetric Digital Subscriber Line. Technology allowing high data rates over existing copper telephone lines. - ASHRAE
- American Society of Heating, Refrigeration and Air Conditioning Engineers
- ASHRAE TC9.9
- Technical Committee for Facility and Equipment Thermal Guidelines for Data Center and other Data Processing Environments. This is a consortium of IT users and manufacturers creating common guidelines for the standardization, layout, testing and reporting of IT rooms and data centers.
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