Glossary

 

 

 

 

 

Q

QuickLoopTM

Can indicate either the DS-16B and DS-8B product that allows private

 

devices within loops to communicate over the fabric with other

 

devices, or the set of actual devices or looplets connected in a loop by

 

the QuickLoop technology. All devices in a QuickLoop share a single

 

AL PA space and behave as if they are in one loop.

 

R

R_A_TOV

Resource Allocation Time-out Value. Maximum time a frame can be

 

delayed in the fabric and still be delivered. See also E_D_TOV.

RAID

Redundant Array of Independent Disks. 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.

Route

As applies to fabric, a communication path between two switches.

 

Routing is the assignment of Class 2 or 3 frames to the most

 

appropriate switch ports for the intended destinations. See also FSPF.

RSCN

Registered State Change Notification. Switch function that sends

 

notification of fabric changes from the switch to specified nodes.

 

S

SAN

Storage Area Network. Network of systems and storage devices that

 

usually communicate using fibre channel protocols. See also Fabric.

Sequence

A fibre channel structure containing one or more frames transmitted

 

in a unidirectional manner between N_Ports. See also Exchange,

 

Frame.

Single mode

Fibre-optic cabling standard that provides for distances of up to 10

 

kilometers between devices.

SNMP

Simple Network Management Protocol. Internet management

 

protocol that does not rely on underlying communication protocols

 

and can therefore be made available over other protocols, such as

 

UDP/IP. Uses IP for network layer functions and UPD for transport

 

layer function, or TCP/IP for both. See also Community (SNMP).

SNS

Simple Name Server. See Name server.

Departmental Switch Models DS-16B and DS-8B Web Tools User Guide

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EMC DS-8B manual QuickLoopTM, Route, Sequence, Single mode