Sun Microsystems StorageTek T9840, Руководство пользователя

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100 T9840 User’s Reference Manual • September 2008 Revision YA • 95739
F
fault symptom code
(FSC) A four-character hexadecimal code generated in response to an error to help
isolate failures within the device. Some FSCs are for information purposes only.
FC See Fibre Channel.
fiber optics The branch of optical technology concerned with the transmission of radiant
power through fibers made of transparent materials such as glass, fused silica,
and plastic. (E)
fiber-optic cable A cable made of ultrathin glass or silica fibers which can transmit data using
pulses of laser light. Fiber-optic cables have several advantages over copper
cables: they have much less signal loss; they allow information to be transmitted
at higher speeds and over longer distances; they are not affected by external
electrical noise; and they are better for transmissions which require security.
Fibre Channel The National Committee for Information Technology Standards standard that
defines an ultrahigh-speed, content-independent, multilevel data transmission
interface that supports multiple protocols simultaneously. Fibre Channel
supports connectivity to millions of devices over copper and/or fiber-optic
physical media and provides the best characteristics of both networks and
channels over diverse topologies.
fibre connection
(FICON) An ESA/390 and zSeries computer peripheral interface. The I/O interface uses
ESA/390 and zSeries FICON protocols (FC-FS and FC-SB-2) over a Fibre
Channel serial interface that configures units attached to a FICON-supported
Fibre Channel communications fabric.
FICON channel A channel having a Fibre Channel connection (FICON) channel-to-control-unit
I/O interface that uses optical cables as a transmission medium. May operate in
either FC or FCV mode.
file-protect To prevent the erasure or overwriting of data stored on data cartridges. See also
write-protect switch.
firmware An ordered set of instructions and data stored in a way that is functionally
independent of main storage; for example, microprograms stored in ROM. (T)
FRU Field replaceable unit.
FSC Fault symptom code.
FTP File Transfer Protocol.
G
Gb Gigabit, equal to 10
9
bits.
Gbps Gigabits per second.
gigabyte (GB) One X 2
30
bytes (binary), or 1 X 10
9
(decimal).