HP StorageWorks 2/64 - Core Switch Manual page 21

MSRS Multi-protocol SAN Routing Services. An optionally licensed software bundle
available on certain HP platforms, such as the HP StorageWorks Multi-protocol
Router, which includes the Fibre Channel Routing Service, the iSCSI Gateway
Service, and the FCIP Tunneling Service.
MTBF Mean time between failures. The average time a component works without
failure. This average is calculated by dividing the number of failures by the
hours under observation.
multicast The transmission of data from a single source to multiple specified N_Ports (as
opposed to all the ports on the network).
See also
multimode A fiber optic cabling specification that allows up to 500 meters between devices.
N_Port Node port. A port on a node that can connect to a Fibre Channel port or to
another N_Port in a point-to-point connection.
See also
Name Server See
NAS Network-attached storage. A disk array connected to a controller that provides
access via a LAN.
NDMP Network Data Management Protocol. Used for tape backup without using
server resources.
NIC Network interconnect card. A printed circuit board that plugs into the bus of
both the client machines and servers in a network. Controls the transmission
and reception of data at the data link level. Also called a Network Interface
Card and a network adapter.
NL_Port Node loop port. A node port that has arbitrated-loop capabilities. Used to
connect an equipment port to the fabric in a loop configuration through an
FL_Port.
See also N_Port, Nx_Port,
node A Fibre Channel device that contains an N_Port or NL_Port.
node count The number of nodes attached to a fabric.
node name The unique identifier for a node, which is communicated during login and port
discovery.
Nonparticipating A mode in which an L_Port in a loop is inactive and cannot arbitrate or send
Mode frames but can retransmit received transmissions. This mode is entered if there
are more than 127 devices in a loop and an AL_PA cannot be acquired.
See also
NOS Not operational. A sequence that is transmitted by an FC_Port to indicate that
the FC_Port has detected a link failure or is offline and is waiting for the offline
sequence (OLS) to be received.
NR_Port A normal E_Port used to connect an MP Router to a backbone fabric.
NS See
NSCAM Name Server Cache Manager. Software that updates the Name Server
databases across switches as a background task.
Nx_Port A node port that can operate as either an N_Port or NL_Port.
OFC Open fiber control. A method used to enable and disable laser signaling for
higher-intensity laser transceivers.
broadcast and unicast.
NL_Port and Nx_Port.
Simple Name Server
private
L_Port and Participating
Simple Name Server.
NL_Port, and public NL_Port.
Mode.
Fabric OS 5.x master glossary
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