Quantum Scalar 218FC, Руководство пользователя

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106 Glossary
Enclosure The box, rack, or set of boxes containing one or more SCSI devices. It
may provide the powering, cooling, mechanical support and external
electronic interfaces for those devices.
Exchange The basic mechanism used for managing an operation. An exchange
identifies information transfers consisting of one or more related
nonconcurrent sequences that may flow in the same or opposite
directions, but always in half-duplex mode. An exchange may span
multiple Class 1 dedicated connections. An OX_ID and an RX_ID
identify an exchange.
Fabric A FC term describing a crosspoint switched topology, which is one of the
three existing FC topologies. Fabric elements interconnect various
N_Ports and are responsible for frame routing.
Fast/Wide SCSI “Fast” and “Wide” are relative terms in comparing previous SCSI
standards and products. “Fast,” as defined in SCSI-2, refers to a maximum
synchronous transfer rate of 10 MHz. “Wide” refers to a 16-bit or 32-bit
data path.
Fault LED During power up and reboot, the Fault LED comes on. If this LED
remains on or comes on, the FCR100 has a problem with one of its
components. During normal operation, this LED should be off.
FC Admin A menu name. It is used to reset the FC adapter and gracefully terminate
all inputs/ outputs pending for this adapter.
FC-AL See Fibre Channel - Arbitrated Loop .
FC adapter A printed circuit assembly that translates data between the host
processor’s internal bus and the FC link. Also
Host Bus Adapter .
FCC Federal Communications Commission
FC Device A device that uses Fibre Channel.
FC Port An opening at the back of the FCR100 that provides connection between
the FC adapter and the FC link.
Fiber The fiber optic cable made from thin strands of glass through which data
in the form of light pulses is transmitted (LASER, LED). It is used for
high-speed transmission over medium to long distances.
Fibre A generic FC term used to cover all transmission media types specified in
the Fibre Channel Physical Layer standard (FC-PH), such as optical fiber,
copper twisted pair, and copper coaxial cable.