N V R A M — Nonvolatile
P A R I T Y — Redundant information that is associated with a block of data.
P A R T I T I O N — You can divide a hard drive into multiple physical sections called partitions with the fdisk command. Each partition can contain multiple logical drives. You must format each logical drive with the format command.
P C I — Peripheral Component Interconnect. A standard for
P DU — Power distribution unit. A power source with multiple power outlets that provides electrical power to servers and storage systems in a rack.
peripheral
An internal or external device, such as a diskette drive or keyboard, connected to a system.
P GA — Pin grid array. A type of processor socket that allows you to remove the processor chip.
P I X E L — A single point on a video display. Pixels are arranged in rows and columns to create an image. A video resolution, such as 640 x 480, is expressed as the number of pixels across by the number of pixels up and down.
P OS T —
P R O C E S S O R — The primary computational chip inside the system that controls the interpretation and execution of arithmetic and logic functions. Software written for one processor must usually be revised to run on another processor. CPU is a synonym for processor.
P R O T E C T E D M O D E — An operating mode that allows operating systems to implement a memory address space of 16 MB to 4 GB, multitasking, and virtual
PS/2 — Personal System/2.
PXE — Preboot eXecution Environment. A way of booting a system via a LAN (without a hard drive or bootable diskette).
RAC — Remote access controller.
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