HP 220mx HP SureStore 9100mx Optical Disk Drive User's Guide - Page 75

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. automatically determines whether to operate in rewritable or write-once mode. optical disk A term synonymous with the 5.25-inch magneto-optical disk. There are two types of optical disks used in jukeboxes: rewritable and write-once. disk See optical disk. R-T driver A program that allows the operating system to communicate with a peripheral device. M-O magneto-optical A type of optical technology which uses a laser to read from and write to a magnetic layer on an optical 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 reflected light to be polarized in one direction (interpreted as a "1") or the opposite direction (interpreted as a "0"). 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 rewritable optical An optical disk technology in which data can be repeatedly written using magnetooptical reading and writing technology. SCSI An acronym for the Small Computer Systems Interface. terminator A resistor array device used for electrically terminating a SCSI bus. A SCSI bus must be terminated at its two physical ends. A peripheral device uses a terminator only if it is at the end of the bus. W write-once An additional operating mode available with multifunction drives. When a write-once disk is inserted, the drive will write data, but will not write over data that has been previously written. This feature is useful for applications that need permanent data security and audit trails. Glossary Glossary-1