Virtual TapeServer SCSI-to-FC Adapter User Manual

GL-3
Glossary
FC-SCSI hardware path ID A FC term describing a list of values showing the physical
hardware path of the FC host to the target device.
Format: Bus_Converter/
Adapter_Address.Protocol_Type.Area.Port.Bus.Target.LUN
Example: 8/4.8.0.0.2.4.0
fiber A fiber optic cable made from thin strands of glass through
which data in the form of light pulses is transmitted (LASER,
LED). It is often used for high-speed transmission over medium
(200m) to long (10km) distances but it can be used for short
distances (<200m).
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.
fibre channel (FC) Logically, the Fibre Channel is a bidirectional, full-duplex,
point-to-point, serial data channel structured for high
performance data communication. Physically, the Fibre Channel
is an interconnection of multiple communication ports, called
N_Ports, interconnected by a switching network, called a fabric,
a point-to-point link, or an arbitrated loop. Fibre Channel is a
generalized transport mechanism that has no protocol of its own
or native input/output command set, but can transport any
existing Upper Level Protocols (ULPs) such as SCSI and IP.
fibre channel - arbitrated
loop (FC-AL)
One of three existing Fibre Channel topologies, in which 2 to
126 devices are interconnected serially in a single loop circuit.
The arbitrated loop topology supports all classes of service and
guarantees in order delivery of frames when the source and
destination are on the same loop.
fibre channel protocol for
SCSI (FCP)
FCP defines a Fibre Channel mapping layer (FC-4) that uses FC-
PH services to transmit SCSI command, data, and status
information between a SCSI initiator and a SCSI target. Using
FCP enables transmission and receipt of SCSI commands, data
and status, across the Fibre Channel using the standard Fibre
Channel frame and sequence formats.
frame The smallest, indivisible unit of information transfer used by
Fibre Channel. Frames are used for transferring data associated
with a sequence. Frame size depends on the hardware
implementation and is independent of the ULP or the application
software.
ftp File Transfer Protocol