P - Definitions
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P
parallel processing
Parallel processing is a method in computing of running two or more processors (CPUs) to handle separate parts of an overall task.
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Peripheral Component Interconnect Express (PCIe, PCI-E)
Peripheral Component Interconnect Express (PCIe or PCI-E) is a serial expansion bus standard for connecting a computer to one or more peripheral devices.
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pizza box server
The term 'pizza box server' refers to the shape of a computer server enclosed in a rectangular and horizontally- arranged chassis and often installed in a rack with similar servers.
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plenum
In buildings, a plenum is a separate space provided for air circulation for heating, ventilation, and air-conditioning (sometimes referred to as HVAC) and typically provided in the space between the structural ceiling and a drop-down ceiling.
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power cycling
Power cycling is the process of turning hardware off and then turning it on again.
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power distribution unit (PDU)
A power distribution unit (PDU) is a device for controlling electrical power in a data center.
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power usage effectiveness (PUE)
Power usage effectiveness (PUE) is a metric used to determine the energy efficiency of a data center.