HP StorageWorks 2/8-EL HP StorageWorks Zoning V3.1.x/4.1.x User Guide (AA-RS26 - Page 99
Switch, Tachyon, Target, Tenancy, Terminal Serial Port, Throughput, Topology
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Glossary Switch Hardware that routes frames according to Fibre Channel protocol and is controlled by software. SWL Short Wavelength. A type of fiber optic cabling that is based on 850-mm lasers and supports 1.0625-Gbps link speeds. May also refer to the type of GBIC or SFP. See also LWL. Tachyon A chip developed by Hewlett-Packard, and used in various devices. This chip has FC-0 through FC-2 on one chip. Target A storage device on a Fibre Channel network. See also Initiator. Tenancy The time from when a port wins arbitration in a loop until the same port returns to the monitoring state. Also referred to as loop tenancy. Terminal Serial Port May also be referred to as the console port. The lower serial port on the CP Card of the StorageWorks Core switch. This port sends switch information messages and can receive commands. Can be used to connect the CP Card to a computer terminal. Has an RS-232 connector wired as a DTE device, and can be connected by serial cable to a DCE device. The connector pins two and three are swapped so that a straight-through cable can be used to connect to a terminal. The device name is ttyS0. See also DCE port, modem serial port. Throughput The rate of data flow achieved within a cable, link, or system. Usually measured in bps (bits per second). See also bandwidth. Topology As applies to Fibre Channel, the configuration of the Fibre Channel network and the resulting communication paths allowed. There are three possible topologies: ■ Point to point: A direct link between two communication ports. ■ Switched fabric: Multiple N_Ports linked to a switch by F_Ports. ■ Arbitrated loop: Multiple NL_Ports connected in a loop. Zoning Version 3.1.x/4.1.x User Guide 99