HP StorageWorks 2/64 HP StorageWorks Fabric OS 5.x Master Glossary (AA-RW7NA-T - Page 25

public loop public NL_Port QLA QLFA QoS queue QuickLoop QuickLoop Mode radius RAID RAIT R_A_TOV RCS RCS_SFC R_CTL receiver redundancy Remote Switch repeater request rate resilience An arbitrated loop that includes a participating FL_Port and can contain both public and private NL_Ports. 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. A type of Fibre Channel controller. QuickLoop Fabric Assist. Arbitrated-loop technology. See also arbitrated loop. 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. A mechanism for each AL_PA address that allows for collecting frames prior to sending them to the loop. 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. A mode that allows initiator devices to communicate with private or public devices that are not in the same loop. The greatest distance between any edge switch and the center of a fabric. A low-radius network is better than a high-radius network. 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. Redundant array of independent tapes. A collection of tape drives that appear as a single volume to the server and are fault tolerant. Resource allocation timeout value. The maximum time a frame can be delayed in the fabric and still be delivered. See also E_D_TOV and RR_TOV. Reliable Commit Service. Refers to Brocade-specific ILS command code. RCS Stage Fabric Config. Refers to Brocade-specific ILS command code. Route control. The first 8 bits of the header, which defines the type of frame and its contents. A device that performs detection and signal processing. Having multiple occurrences of a component to maintain high availability (HA). An optionally licensed product for long-distance fabrics, requiring a Fibre Channel-to-ATM or SONET gateway. A circuit that uses a recovered clock to regenerate and transmit an outbound signal. The rate at which requests arrive at a servicing entity. See also service rate. A fabric's ability to adapt to or tolerate a failure of a component within the fabric. Fabric OS 5.x master glossary 25