HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software Maintenance and Service Guide (EK-G80MS-SA. C01, March 2005)

Glossary
270 HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software
Maintenance and Service Guide
N-m
Newton-meter. The metric equivalent to inch-pounds of torque.
node
(3) In Fibre Channel, a device that has at least one N_Port or NL_Port.
nonredundant controller configuration
(1) A single-controller configuration. (2) An array 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 array controller and is accessible to the operator
operator control panel
See OCP.
“other controller”
The array controller in a dual-redundant pair that is connected to the array 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.