Brocade 16Gb SAN Switch for HP BladeSystem c-Class User Guide

Port_Name The unique identifier assigned to an FC port. It is communicated during login and port discovery.
POST Power-on self-test. A series of diagnostic tests run by a switch after it is powered on.
primary FCS switch Primary Fabric Configuration Server switch. The switch that actively manages the configuration
and security parameters for all switches in the fabric.
private loop An arbitrated loop that does not include a participating FL_Port.
private NL_Port An NL_Port that communicates only with other private NL_Ports in the same loop and does not
log in to the fabric.
public device A device that supports arbitrated loop protocol, can interpret 8-bit addresses, and can log in to
the fabric. See also arbitrated loop.
public loop An arbitrated loop that includes a participating FL_Port and may contain both public and private
NL_Ports. See also arbitrated loop.
public NL_Port An NL_Port that logs in to the fabric, can function within a public or private loop, and can
communicate with private or public NL_Ports. See also private loop.
Q
quad A group of four adjacent ports that share a common pool of frame buffers.
R
R_A_TOV Resource allocation time-out value. The maximum time a frame can be delayed in the fabric and
still be delivered.
RAID Redundant Array of Independent Disks. A collection of disk drives that appear as a single volume
to the server and are fault tolerant through mirroring or parity checking.
request rate The rate at which requests arrive at a servicing entity.
route With respect to a fabric, the communication path between two switches. May also apply to the
specific path taken by an individual frame from source to destination.
routing The assignment of frames to specific switch ports according to frame destination.
RR_TOV Resource recovery time-out value. The minimum time a target device in a loop waits after a LIP
before logging out a SCSI initiator. See also LIP.
RSCN Registered state change notification. A switch function that allows notification of fabric changes
to be sent from the switch to the specified nodes.
S
SAN Storage area network. A network of systems and storage devices that communicate using FC
protocols.
SDRAM Synchronous dynamic random access memory. The main memory for a switch. See also switch.
sequence A group of related frames transmitted in the same direction between two N_ports.
service rate The rate at which an entity can service requests.
service rate The rate at which an entity can service requests.
SFP Small Form-Factor Pluggable
SNMP Simple Network Management Protocol. An Internet management protocol that uses either IP for
network-level functions and UDP for transport functions, or TCP/IP for both. SNMP can be made
available over other protocols (such as UDP/IP) because it does not rely on the underlying
communication protocols. See also MIB, trap (SNMP).
SNS Simple Name Server. A switch service that stores names, addresses, and attributes for up to 15
minutes, and provides them as required to other devices in the fabric. May also be referred to
as a directory service.
switch Hardware that routes frames according to FC protocol and is controlled by software.
switch port A port on a switch. Switch ports can be E_Ports, F_Ports, or FL_Ports.
38 Glossary