Qlogic SANsurfer FC HBA Manager User Manual page 145

A
NIC
Network Interface Controller. A computer
circuit board or card that is installed in a
computer so that it can be connected to a
network.
NPIV
N_Port ID Virtualization. A Fibre Channel
facility that allows multiple N_Port IDs to
share a single physical N_Port. This allows
multiple FC initiators to occupy a single
physical port. (See Port.)
NVRAM
NonVolatile Random Access Memory.
Memory that stores
settings. You can configure adapter
settings or restore them from a file. These
settings are saved in NVRAM and are
retained when power is removed.
ONC
Open Network Computing. A remote
procedure call developed by Sun Micro-
systems.
Path
A combination of an
port. Note that this is distinct from any
internal paths within the fabric network. A
fabric network appears to the operating
system as an opaque network between the
adapter (initiator) and the target port.
SN0054651-00 G
HBA configuration
HBA port and a target
SANsurfer FC HBA Manager User's Guide
Management Tool for QLogic FC and FCoE Adapters
Because a path is a combination of an
adapter and a target port, a path is distinct
from another path if it is accessed through
a different adapter and/or it is accessing a
different target port. Consequently, when
switching from one path to another, the
driver might be selecting a different
adapter (initiator), a different target port, or
both. This makes a difference to the driver
when selecting the proper method of
failover notification. It can make a differ-
ence to the target device, which might
have to take different actions when
receiving retries of the request from
another initiator or on a different port.
Point-to-point
Two FC nodes directly connected
(non-loop).
Port
Access point in a device where a link
attaches. The four types of ports include:
N_Port is a
supports point-to-point topology.
NL_Port is a FC device port that
supports loop topology.
F_Port is a port in a fabric where an
N_Port can attach.
FL_Port is a port in a fabric where an
NL_Port can attach.
QoS
Quality of Service.
(SLA) that
ensures business continuity
when transmitting data over virtual ports
by setting priorities and allocating
bandwidth.
SAN
Storage Area Network. A high-speed
network that interconnects multiple
storage units and servers used by a larger
network of users.
FC device port that
Service Level Agreement
Glossary-5