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SN0054651-00 F Glossary-1
Glossary
Adapter
See HBA and CNA.
AL_PA
Arbitrated Loop_Physical Address. This is
a low-level address on the FC loop.
Arbitrated loop
A non-point-to-point circular topology that
connects two or more ports, but only two
ports can communicate at one time. The
network passes all communication through
all ports connected onto the loop.
BIOS
Basic Input/Output System. An HBA's
flash PROM contains the code that allows
booting from the HBA at startup.
Boot code
The first program to run when a system is
powered on. This is also true for devices
within a system, such as FC HBAs.
FCode, BIOS, and EFI (enhanced
firmware interface) are all forms of boot
code for specific hardware/operating
system environments.
Boot code for QLogic FC adapters is
required if the computer system is booting
from a storage device (boot device)
attached to the QLogic adapter.
The primary function of the boot code is
communication with the external boot
device before the operating system is up
and running. The boot code can also
perform secondary functions, including
managing the setup for the adapter and
initializing and testing the adapter’s ISP.
Boot device
The hard disk that contains the operating
system that the BIOS uses to boot from
when the computer is started.
CNA
Converged Network Adapter. CNAs
support both data networking (TCP/IP)
and storage networking (FC) traffic on a
single I/O adapter using two new technolo-
gies: Enhanced Ethernet and Fibre
Channel over Ethernet (FCoE).
CRC
Cyclic Redundancy Check. A CRC is a
type of check value designed to catch
most transmission errors.
CSV file
Comma Separated Values file.
DCBX
Data Center Bridging Exchange. A
networking protocol that allows switches
and their target devices to automatically
exchange Ethernet parameters.