HP StorageWorks 4/16 Brocade SAN Glossary for Fabric OS v6.0.0 - Page 27

Tiering The process of grouping particular SAN devices by function and then attaching these devices to particular switches of groups of switches based on that function. Time Server (TS) A Fibre Channel service that allows for the centralized management of switch time settings. Top Talker (TT) A fabric service (part of the optionally licensed Advanced Performance Monitoring feature) that provides real-time information about the top "n" bandwidth-consuming flows from a set of a large number of flows passing through a specific port in the network. See also Adaptive Networking. Topology The physical or logical arrangement of devices in a networked configuration. TPC Third Party Copy. A protocol for performing tape backups without using server resources. Traffic Isolation A fabric service that allows you to control the flow of interswitch traffic by creating a dedicated path for traffic flowing from a specific set of source ports (N_Ports). See also Adaptive Networking. Transceiver A device that converts one form of signaling to another for transmission and reception; in fiber optics it means optical to electrical. Translate phantom domain An FC router virtual domain that represents an entire fabric. Device connectivity can be achieved from one fabric to another over the backbone fabric through this virtual domain, without merging the two fabrics. Translative mode A mode that allows public devices to communicate with private devices across a fabric. Transmission character A valid or invalid character transmitted serially over fiber. Transmission word A string of 4 consecutive transmission characters. Trap An SNMP mechanism for agents to notify the SNMP management station of significant events. Trunking A fabric feature that enables distribution of traffic over the combined bandwidth of up to eight ISLs between adjacent switches, while preserving in-order delivery. Trunk group A set of ports that share traffic to a destination domain. Bloom-based switches supported trunk groups of up to four ISLs. Condor and GoldenEye based switches support trunk groups of up to eight ISLs. TTL Time To Live. The number of seconds an entry exists in cache before it expires. Tunneling A technique for making two different networks interact where the source and destination hosts are on the same type of network, but there is a different network in between. Brocade SAN Glossary 1/29/2008 Page 27 of 29