Compaq LP8000-F1 User Manual page 86

2 Compaq StorageWorks 64-Bit PCI-To-Fibre Channel Host Bus Adapter User Guide
Connector
Custom Device Module (CDM)
Device Driver
Duplex Cable
Duplex Transmission
Cladding The dielectric material surrounding the core of an electrical fiber or material
surrounding the core of a fiber optic cable. It usually refers to diameter,
often 125 m measured in microns.
A mechanical device used to align and join two fibers together to provide a
means for attaching and decoupling it to a transmitter, receiver, or another
fiber.
Core The central region of an optical fiber through which light is transmitted.
A CDM is the driver component in the NetWare Peripheral Architecture
used to drive specific storage devices attached to the HBA.
The NPA separates NetWare driver support into two components: a Host
Adapter Module (HAM), and a Custom Device Module (CDM).
Data Rate The maximum number of bits of information that can be transmitted per
second in a data transmission link. It is typically expressed as Megabits per
second (Mbps).
A software program that enables a personal computer to communicate with
hard drives, CD-ROM drives, printers, and other peripherals. Device drivers
are stored on a hard drive and are loaded into memory at boot up.
A two-fiber cable suitable for duplex transmission or transmissions in two
directions.
Transmission in both directions, either one direction at a time (half duplex)
or both directions simultaneously (full duplex).
Fabric A fibre channel interconnection method that allows multiple simultaneous
and concurrent data transfers between multiple hosts and/or storage devices
connected with a multi-port hub.
FC-AL Abbreviation for Fibre Channel Arbitrated Loop, an interconnection scheme
that supports from 1 to 126 ports on a loop in a shared medium topology.
FCP
Fibre Channel Protocol.
FDDI Fibre Distributed Data Interface. A network based on the use of optical-fiber
cable to transmit data at 100Mbit/sec.