HP StorageWorks HSG80 Array Controller V8.7 Maintenance And Service Manual page 174

Glossary
nonredundant controller configuration
(1) A single controller configuration. (2) A controller configuration that does not include a
second controller.
OCP
Operator control panel. The control and indicator panel associated with an array controller.
The OCP is mounted on the controller and is accessible to the operator.
operator control panel
See OCP
"other controller"
The controller in a dual-redundant pair that is connected to the controller serving your current
CLI session. See also "this controller."
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 errors exist in the transmission.
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.
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 or program card, is about the size
of a credit card. See also program card.
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.
pluggable
A replacement method that allows the complete system to remain online during device
removal or insertion. The system bus must be halted, or quiesced, for a brief period of time
during the replacement procedure. See also hot-pluggable.
port
In general terms, the port is:
Glossary–8 HSG80 Array Controller V8.7 Maintenance and Service Guide