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SANsurfer iSCSI HBA CLI User’s Guide
Command Line Interface for QLogic iSCSI Host Bus Adapters
Glossary-4 SN0054621-00 E
S
Flash
Nonvolatile memory holding the boot code.
At times, Flash and boot code are used
interchangeably. (See boot code)
Flash BIOS
A flash PROM contains the BIOS code for
the HBA.
G_Port
Generic port. A port that can operate as
either an E_Port or an F_Port. A G_Port
can determine operating mode at switch
port initialization, F_Port when an N_Port
attachment is determined, E_Port when an
E_Port attachment is determined. See
E_Port, F_Port, FL_Port, L_Port, N_Port
(Node Port), NL_Port (Node Loop Port)
HBA
Host bus adapter. The board that inter-
faces between the host system and the
target devices. HBA is synonymous with
adapter, host adapter, and adapter board.
HBA alias
A user-defined name for an HBA.
HBA port
A port on the HBA board.
HBA port alias
A user-defined name for an HBA port.
HBA port beacon
An LED on the HBA. Flashing it enables
you to locate the HBA.
IOCB
I/O control block. An IOCB is a command
structure in QLogic ISP architecture.
ioctl
Input/output control. A system call in
Unix/Linux systems. Allows an application
to control or communicate with a device
driver outside usual read/write operations.
JBOD
“Just a bunch of disks.” As opposed to a
SAN.
See SAN.
L_Port
Loop port. Does arbitrated loop functions
and protocols. NL_Ports and FL_Ports are
examples of loop-capable ports. See
E_Port, F_Port, FL_Port, G_Port, N_Port
(Node Port), NL_Port (Node Loop Port).
LIP
Loop initialization process. The initializa-
tion process in an arbitrated loop that
occurs when the loop is powered up or a
new device is added. One function of a LIP
is to assign addresses. All data transmis-
sion on the loop is suspended during a LIP.
load balancing
A software feature that improves system
performance by balancing device access
between multiple HBAs for maximum
resource efficiency. Available in Windows
2000/Windows Server 2003, Novell
NetWare, and Red Hat/SUSE Linux.
loopback
Diagnostic tool that routes transmit data
through a loopback connector back to the
same HBA.
loop ID
The device’s AL_PA on the loop.