HP StorageWorks 2/64 - Core Switch Manual page 25

public loop An arbitrated loop that includes a participating FL_Port and can contain both
public and private NL_Ports.
public NL_Port An NL_Port that logs in to the fabric, can function within either a public or a
private loop, and can communicate with either private or public NL_Ports.
QLA A type of Fibre Channel controller.
QLFA QuickLoop Fabric Assist. Arbitrated-loop technology.
See also
QoS Quality of service. A defined level of performance in a data communications
system. When data is broken into packets that travel through the same routers
in a LAN or WAN with all other data, QoS mechanisms are the only way to
guarantee quality by giving real-time data priority over non-real-time data.
queue A mechanism for each AL_PA address that allows for collecting frames prior
to sending them to the loop.
QuickLoop A software product that allows multiple ports on a switch to create a logical
loop. Devices connected via QuickLoop appear to each other as if they are
on the same arbitrated loop.
QuickLoop Mode A mode that allows initiator devices to communicate with private or public
devices that are not in the same loop.
radius The greatest distance between any edge switch and the center of a fabric. A
low-radius network is better than a high-radius network.
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.
See also JBOD.
RAIT Redundant array of independent tapes. A collection of tape drives that appear
as a single volume to the server and are fault tolerant.
R_A_TOV Resource allocation timeout value. The maximum time a frame can be delayed
in the fabric and still be delivered.
See also
RCS Reliable Commit Service. Refers to Brocade-specific ILS command code.
RCS_SFC RCS Stage Fabric Config. Refers to Brocade-specific ILS command code.
R_CTL Route control. The first 8 bits of the header, which defines the type of frame
and its contents.
receiver A device that performs detection and signal processing.
redundancy Having multiple occurrences of a component to maintain high availability (HA).
Remote Switch An optionally licensed product for long-distance fabrics, requiring a Fibre
Channel-to-ATM or SONET gateway.
repeater A circuit that uses a recovered clock to regenerate and transmit an outbound
signal.
request rate The rate at which requests arrive at a servicing entity.
See also
resilience A fabric's ability to adapt to or tolerate a failure of a component within the
fabric.
arbitrated loop.
E_D_TOV and RR_TOV.
service rate.
Fabric OS 5.x master glossary
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