Specifications

Glossary
970 Fabric OS Version 3.1.x/4.1.x Reference Guide
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.
Remote Fabric
A fabric that spans across WANs by using protocol translation (a process also known as tunneling)
such as Fibre Channel over ATM or Fibre Channel over IP.
Remote Switch
Bridges two switches into a SAN as large as 3000KM or more through protocol encapsulation in
ATM networks via the Computer Network Technologies (CNT) UltraNet Open Systems Gateway.
Request Rate
The rate at which requests arrive at a servicing entity.
See also service rate.
RLS Probing
Read link status of the AL_PAs.
Root Account
A login used for debugging purposes by HP engineers and is not intended for customer use.
See also account level switches.
Route
As applies 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 Time-out Value. The minimum time a target device in a loop waits after a LIP
before logging out a SCSI initiator.
See also E_D_TOV, R_A_TOV.
RS-232 port
A port that conforms to a set of Electrical Industries Association (EIA) standards. Used to connect
DTE and DCE devices for communication between computers, terminals, and modems.
See also DCE port, DTE port.