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SN0054651-00 F Glossary-5
SANsurfer FC HBA Manager User’s Guide
Management Tool for QLogic FC and FCoE Adapters
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 HBA configuration
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 HBA port and a target
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.
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 FC device port that
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.
Service Level Agreement
(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.