HP Array Controller HSG V8.7 Software - Manual (Page 540)

G–14 HSG80 User’s Guide
parity check A method of detecting errors when data is sent over a communications
line. With even parity, the number of ones in a set of binary data should
be even. With odd parity, the number of ones should be odd.
participating mode A mode within an L_Port that allows the port to participate in loop
activities. A port must have a valid AL_PA to be in participating mode.
PCM Polycenter Console Manager.
PCMCIA Personal Computer Memory Card Industry Association. An
international association formed to promote a common standard for PC
card-based peripherals to be plugged into notebook computers. The
card commonly known as a PCMCIA card is about the size of a credit
card.
parity A method of checking if binary numbers or characters are correct by
counting the ONE bits. In odd parity, the total number of ONE bits
must be odd; in even parity, the total number of ONE bits must be even.
Parity information can be used to correct corrupted data. RAIDsets use
parity to improve the availability of data.
parity bit A binary digit added to a group of bits that checks to see if there are
errors in the transmission.
parity RAID See RAIDset.
partition A logical division of a container, represented to the host as a logical
unit.
peripheral device Any unit, distinct from the CPU and physical memory, that can provide
the system with input or accept any output from it. Terminals, printers,
tape drives, and disks are peripheral devices.
point-to-point
connection A network configuration in which a connection is established between
two, and only two, terminal installations. The connection may include
switching facilities.