Glossary-6 Sixth Edition 95741
Glossary
software All or part of the programs,
procedures, rules, and associated
documentation of a data processing system.
Software is an intellectual creation that is
independent of the medium on which it is
recorded. (T)
state The condition of a device, such as
online or offline.
sub-menu A menu related to and reached
from a main menu. (IBM)
switch A device or programming technique
for making a selection; for example, a toggle,
a conditional jump. (A)
T
tape See magnetic tape.
tape drive A device for moving magnetic
tape and controlling its movement. (T)
target A SCSI device performing an I/O
operation requested by the initiator.
topology A method or scheme for
connecting ports for communicating in FC.
FC topologies include Point-to-Point,
Arbitrated Loop, and Fabric.
V
VolSafe A mode of operation and special
data cartridge tape that allows data only to be
appended to the cartridge tape; no data is
overwritten.
VOLSER A six-character alphanumeric label
used to identify a volume.
W
write operation An output operation that
sends a processed record to an output device
or output file. (IBM)
write protection Restriction of writing into
a data set, file or storage area of a user or
program not authorized to do so. (IBM)