Abbreviations / Synonyms
| Term Definition | ||
| A | ||
| ABS | Automatic Backup System | |
| ADU | Air Distribution Unit | |
| ATA | Advanded Technology Attachment | |
| ATS | Automatic Transfer Switch - an electromechanical tranfer switch | |
| AUI | Attached Unit Inteface | |
| AWGI | American Wire Gage | |
| B | ||
| BCP | Business Continunity Planning | |
| BTU | British Thermal Unit - The amount of heat energy required to raise the temp. of 1 lb of water by 1 degree F in one hour | |
| C | ||
| CAGR | Compounded Annual Growth Rate | |
| CAT-5 | Short for Category 5, network cabling that consists of four twisted pairs of copper wire terminated by RJ45 connectors. Cat-5 cabling supports frequencies up to 100 MHz and speeds up to 1000 Mbps. It can be used for ATM, token ring, 1000Base-T, 100Base-T, and 10Base-T networking. | |
| CFD | Computational Fluid Dynamics | |
| CFM | Cubic feet per minute | |
| CIEE | California Institute for Energy Efficiency | |
| CNS | Cluster Name Space | |
| COTS | Commercial Off The Shelf | |
| CPU | Central Processing Unit | |
| CRAC | Computer Room Air Conditioner | |
| CRAH | Computer Room Air Handler | |
| CW | Cold Water | |
| CWR | Chilled Water Return | |
| CW S | Chilled Water Supply | |
| D | ||
| DACS | Digital access and cross-connect system. A digital switching device in telecommunications for routing T1 lines. | |
| DC | Direct Current | |
| DCiE | Data Center infrastructure Efficiency | |
| DIMM | Dual In-line Memory Module | |
| DIP | Dual In-line Package | |
| DP | Dew Point - the temp at which water vapor begins to condense | |
| DPF | Displacement Power Factor | |
| DR | Disaster Recovery | |
| E | ||
| EER | Energy Efficiency Ratio: measurement quantifying the performance of a compressor relative to its energy comsumption | |
| EPMS | Electrical Power Monitoring System | |
| F | ||
| FSP | Full Service Provider | |
| G | ||
| GB | Giga-byte (1 billion bytes) | |
| Gpbs | Giga-bytes per second | |
| H | ||
| HVAC | Heating Ventilation Air Conditioning | |
| I | ||
| IAQ | Indoor Air Quality | |
| IDF | Intermediate Distribution Frame | |
| IEC | NInternational Electrotechnical Commission | |
| IGBT | Insulated Gate Bipolar Transistor | |
| IP | Internet Protocol | |
| I&E | Infra-structure &Energy | |
| J | ||
| K | ||
| Kilobit | 1024 Bits | |
| KPI | Key Performance Indicator | |
| kW | Kilo-watt | |
| L | ||
| LEED | Leadership in Energy and Environmental Design | |
| LCC | Life Cost Cycle | |
| M | ||
| MAU | Media Access Unit (an enternet transceiver) | |
| Megabite | 1024 kilobits | |
| MEP | Mechanical and Electrical Products | |
| MSS | Maximum Segment Size | |
| MTBF | Mean Time Before Falirues | |
| MTS | Manual Transfer Switch | |
| MTTR | Mean Time To Recover | |
| mW | Mega-watt | |
| N | ||
| NAS | Network Attached Storage | |
| NCPI | Network Critical Physical Infrastructure | |
| NEMA | National Electrical Manufacturers Association | |
| NIC | Network Interface Card | |
| NIM | Netowrk Interface Module | |
| NOC | Network Operations Center | |
| O | ||
| OSP | Open Settlement Protocol | |
| OSS | A generic term for a suite of programs that enable an enterprise to monitor, analyze and manage a network system. | |
| P | ||
| PCU | Power Conversion Unit | |
| PDU | Power Distribution Unit | |
| PF | Power Factor | |
| PFC | Power Factor Correction | |
| PGA | Programmable Gate Array | |
| PIO | Programmed Input/Output | |
| POE | Power over Ethernet, a solution where electrical current is run to networking hardware, over the Ethernet Category 5 or high data cabling. | |
| PQ | Power Quality | |
| PSU | Power Supply Unit - an internal power supply | |
| PUE | Power Usage Effectiveness | |
| PV | PhotoVoltaic | |
| Q | ||
| R | ||
| RAID | Redundant Array of Independent Disks | |
| RBD | Reliability Block Diagram - Linear Combinatorial Analysis | |
| RDP | Remote Distribution Panel | |
| RH | Relative Humidity | |
| RMS | Root Mean Square | |
| S | ||
| SaaS | Software As A Service | |
| SAN | Storage Area Network | |
| SCR | Silicon Controlled Rectifiers (Also called thyristors) | |
| SFF | Small Form Factor | |
| SHR | Sensible Heat Ratio=Sensible Cooling/Total Cooling | |
| SIMM | Single In-line Memory Module | |
| SIP | Single In-line Package |
|
| SMPS | Switch Mode Power Supply | |
| STS | Static Transfer Switch - free of moving parts | |
| T | ||
| TB | Tera-byte (1,000,000,000,000 bytes) | |
| THD | Total Harmonic Distortion | |
| TWh | Tera-watt hour (1 mission megwatthours) | |
| T&H | Temperature & Humidity | |
| U | ||
| UPS | Uninterruptable Power Supply | |
| UTP | Unshielded twiested pari | |
| V | ||
| VA | Vold-Amp | |
| VBR | Short for variable bit rate, or Class B quality of service, an ATM bandwidth-allocation service that allows users to specify a throughput capacity (i.e., a peak rate) and a sustained rate but data is not sent evenly. | |
| VDC | Volts Direct Current | |
| VLAN | Virtual Local Area Network | |
| VPN | Virtual Private Network | |
| W | ||
| X | ||
| Y | ||
| Z | ||