Glossary - HP SureStore 220mx User Manual

Glossary

C-D
cartridge A plastic enclosure
that contains an optical disk.
The cartridge is labeled "A" or
"B" to denote separate sides of
the optical disk. The optical
disk is never removed from the
cartridge.
disk See optical disk.
driver A program that allows
the operating system to
communicate with a peripheral
device.
E-L
element A SCSI term for any
one of the autochanger
components — drive, mailslot,
storage slots, or picker.
front panel The part of the
jukebox that includes a control
panel used to manage and
display functions, and a
mailslot to insert and remove
disks.
high-voltage differential
SCSI Signals are asserted on
the bus by using two lines for
each signal and measuring the
voltage difference between the
signals. Differential retains
more signal quality than
single-ended and is not as
sensitive to noise, allowing for a
longer cable length. This form
of differential uses +5V signal
levels.
HVD See high-voltage
differential SCSI.
jukebox A term synonymous
with optical disk library or
autochanger. This type of
optical storage device is often
referred to as a "jukebox"
because when a file is
requested, the disk containing
the file is found, inserted into
the drive, and the requested
information is sent to the host
computer system, similar to the
way a musical jukebox finds a
record and moves it to the
turntable when a song is
requested.
jukebox controller The part
of the jukebox that controls the
sending and receiving of SCSI
commands and controls the
disk transport mechanism.
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