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| Glossary |
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| Q | ||
QuickLoopTM | Can indicate either the | ||
| 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 | ||
| 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 | ||
| 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 | |||
| 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