Seagate STT20000A Product Manual page 85

Glossary Appendix A
RLL (Run Length Limited)—A data encoding method where data bits are encoded so that certain constraints are met
with regard to the maximum and minimum distances between flux transitions.
Serpentine—A recording method in which tracks are laid down sequentially, and the tape is not rewound at the end of
a track. This recording method exploits the bi-directional capabilities of the cartridge.
Streaming—A method of recording on magnetic tape that maintains continuous tape motion without the requirement to
start and stop within an inter-block gap.
Tape Drive—A peripheral storage device that records data onto removable tape cartridges. Used to back up a disk
drive. (See also Disk Drive.)
Track—A longitudinal area on the tape along which magnetic signals can be serially recorded.
Track ID block—A block recorded in the Load Point and Early Warning regions to designate the track number.
Uncorrected Bit Error Rate—The probability of a bit being in error, without using any error correction techniques.
Underrun—A condition developed when the host transmits or receives data at a rate less than required by the device
for streaming operation.
STT20000A Product Manual Page 77