HP StorageWorks A7298A Installation Manual page 87

Glossary
Multi-initiators
Two different Fibre Channel HBAs in one arbitrated loop sharing the same storage devices, but
not communicating with each other.
Multi-Mode Fiber
An optical waveguide in which light travels in multiple modes. Typical core/cladding sizes
(measured in microns) are 50/125, 62.5/125, and 100/140.
Multiplexing
The process by which two or more signals are transmitted over a single communications
channel.
NetWare Peripheral Architecture (NWPA)
Network architecture that provides a broader and more reliable driver support for third-party
host adapters and storage devices. The NPWA separates NetWare driver support into two
components: a Host Adapter Module (HAM), and a Custom Device Module (CDM). See also
Custom Device Module and Host Adapter Module.
nm
-9
Nanometer. A unit of measurement equal to one billionth of a meter. 10 meter.
Non-OFC
Non-Open Fiber Control. GLMs that do not contain OFC control but still guarantee laser
emission levels to be below Class 1.
OFC
Open Fiber Control. A power monitoring/control system which continuously monitors the
optical fiber link between two ports and prevents any laser emission from exceeding Class 1
levels in the event of a break anywhere in the path.
Optical Waveguide
Dielectric waveguide with a core consisting of optically transparent material or low attenuation
(usually silica glass) and with cladding consisting of optically transparent material of lower
refractive index than that of the core. It is used for the transmission of signals with lightwaves
and is frequently referred to as fiber.
PCI Bus #
An internal Peripheral Connect Interface bus number in a computer. PCI Bus # is set by the
computer system's BIOS, and in most cases, the number is zero.
PCI Device #
PCI slot number in a computer.
Point-To-Point (PTP)
A connection established between two specific locations, as between two buildings.
Host Bus Adapter for Windows and Linux Installation Guide 87