P - Definitions

  • P

    P/390

    The P/390 is basically an IBM mainframe system adapted to run on a personal computer.

  • parallel processing

    In computers, parallel processing is the processing of program instructions by dividing them among multiple processors with the objective of running a program in less time.

  • Paris Agreement

    The Paris Agreement is an international treaty that seeks to reduce the emission of greenhouse gases. The agreement is sponsored by the United Nations Framework Convention on Climate Change (UNFCCC) and seeks to limit temperature increases in the 21st century to below 2 degrees Celsius.

  • Peripheral Component Interconnect Express (PCIe, PCI-E)

    PCIe is a high-speed serial interconnection standard for connecting peripheral devices to a computer's motherboard.

  • 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.

  • plenum

    In building construction, a plenum (pronounced PLEH-nuhm, from Latin meaning full) 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.

  • power cycling

    Power cycling is the process of turning hardware off and then turning it on again. In the data center, technicians use power cycling to test the durability and reliability of network components.

  • power distribution unit (PDU)

    A power distribution unit is a device for controlling electrical power in a data center. Floor and rack-mounted PDUs can provide data for power usage effectiveness (PUE) calculations.

  • power usage effectiveness (PUE)

    Power usage effectiveness (PUE) is a metric used to determine the energy efficiency of a data center. PUE is determined by dividing the amount of power entering a data center by the power used to run the computer infrastructure within it. (Continued...)

  • Puppy Linux

    Puppy Linux is a compact version of Linux, an operating system (OS) that provides computer users with a free or low-cost alternative to Unix. Puppy Linux is one of several similar OSs, all of which together make up a group called skinny Linux... (Continued)

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