HP Surestore 125ex - Optical Jukebox Manual page 123

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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low-voltage differential SCSI A differential SCSI that uses lower voltage swings and is less susceptible to noise than
previous differential SCSI signalling. LVD enables faster data burst rates and longer cable lengths. This form of differ-
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ential uses 3.3V signal levels.
LVD See low-voltage differential SCSI
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magneto-optical A type of optical technology which uses a laser to read from and write to a magnetic layer on an opti-
cal disk. To write, a spot on the magnetic layer is heated by a laser to a point where it can be magnetically altered by the
write magnetic head. To read, a light from the laser is reflected from the spot. The magnetic alteration causes the
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reflected light to be polarized in one direction (interpreted as a "1") or the opposite direction (interpreted as a "0").
mailslot The area where disks are inserted and removed from the jukebox.
multifunction drive An optical disk drive that supports both rewritable and write-once optical disks. The drive detects
the disk type by reading a factory-stamped code on the disk, and automatically determines whether to operate in rewrit-
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