Carbon Footprint
A measurement of the volume of Carbon Dioxide generated by business operations, units are commonly metric tons.
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Leave a Comment (0) →CapEx
Capital Expense, the cost of purchasing capital equipment.
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Leave a Comment (0) →Bypass Airflow
Conditioned air that does not reach computer equipment. Some bypass air is inevitable and without containment, some bypass air is prudent. Unintended bypass air can occur by escaping through cable cut-outs, holes under cabinets, misplaced perforated tiles or holes in the computer room perimeter walls.
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Leave a Comment (0) →Building Management
Synonymous with BAS, AMS and other computer-based tools used to manage data center facilities assets such as UPS, Generators, Chiller Plant, HVAC, etc.
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Leave a Comment (0) →British Thermal Unit (BTU)
A unit of energy. 1kWh = 3412btu. Cooling equipment capacity is commonly specified in btu/hr.
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Leave a Comment (0) →Branch Circuit Monitoring (BCM)
A monitoring system used to record and monitor an individual electrical circuit. Typical parameters which are monitored include amperage, voltage, power factor, apparent power (volt amps), real power (watts) and energy usage ( watt-hours). The branch circuit is typically defined to be a the circuit fed by a single breaker or 3 phase set of breakers in a multi-breaker panel.
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Leave a Comment (0) →Blanking Panel
A metal or plastic strip mounted in unused U spaces in a rack that restricts recirculation airflow, also called blanking or filler plates.
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Leave a Comment (0) →Blade Server
A server architecture that houses multiple server modules (“blades”) in a single chassis. It is widely used in datacenters to save space and improve system management. Either self-standing or rack mounted, the chassis provides the power supply, and each blade has its own CPU, memory and hard disk. Redundant power supplies may be an option. Blade servers generally provide their own management systems and may include a network or storage switch.
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Leave a Comment (0) →Amp (A)
A unit of electrical current.
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Leave a Comment (0) →Alternating Current AC
The designation given to power that is delivered in the form of a sinusoidal wave form. AC won out over DC as the preferred method of delivering and using power in the industrial age due to the ease of voltage transformation using static devices (transformers).
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Leave a Comment (0) →Alternate Entrance
A supplementary entrance facility into a building using a different routing to provide diversity of service and for assurance of service continuity.
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Leave a Comment (0) →Aisle
The open space between rows of racks. Open airflow designs dictates racks should be arranged with consistent orientation of front and back to create ‘cold’ and ‘hot’a isles; but aisle containment designs and alternative cooling methods may dictate alternate configurations.
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Leave a Comment (0) →Airside Economizer
A device consisting of fans, ducting and a control which utilizes outside air directly to cool the data center when environmental conditions allow. Air is typically filtered, brought into existing distribution system and then exhausted back to the atmosphere. Economizers can save data center operators substantial operating costs. According to GreenerComputing.org, economization has the potential to reduce the annual cost of a data center’s energy consumption by more than 60 percent. Use of cooler external environmental temperatures to preserve hardware is an important component in sustainable green computing practices in general. Unfortunately, economizers are only useful for data centers located in cooler climates.
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Leave a Comment (0) →Air Mixing
The unintended mixing of cold and hot air.
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Leave a Comment (0) →Air Conditioning Airflow Efficiency (ACAE)
The amount of heat removed per standard cubic foot of airflow per minute.
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Leave a Comment (0) →Access Provider (AP)
The operator of any facility that is used to convey telecommunications signals to and from a customer premises.
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Leave a Comment (0) →Access Line
A telecommunications circuit provided by a service provider at the demarcation point.
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Leave a Comment (0) →V, PVC
Polyvinylchloride jacket
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Leave a Comment (0) →U
Utility/general use cables to be used outdoors, indoors where protected but not in an air plenum.
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Leave a Comment (0) →TS
Tri-shielding
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