HP StorageWorks Fabric OS 5.0.0 Diagnostics and System Error Messages Reference Guide (AA-RW1SA-TE, May 2005)

410 Glossary
pstate
Port State Machine.
public device
A device that supports arbitrated-loop protocol, can interpret 8-bit addresses, and can log in to the fabric.
public key
The public half of a key pair. See also key, key pair.
queue
A mechanism for each AL_PA address that allows for the collection of frames prior to sending them to the loop.
QuickLoop
An HP StorageWorks 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
Allows initiator devices to communicate with private or public devices that are not in the same loop.
R_RDY
Receiver ready. A primitive signal indicating that the port is ready to receive a frame.
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.
RCS
Reliable Commit Service.
RCS_SFC
RCS Stage Fabric Config.
RLS
Read Link Status.
route
As applied 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. See also FSPF.
routing
The assignment of frames to specific switch ports, according to frame destination.
RR_TOV
Resource recovery timeout value. The minimum time a target device in a loop waits after a LIP before logging out a
SCSI initiator.