Quantum SuperLoader 3 User Manual page 297

Glossary
A faulty data reading that does not recur if the same data is
soft error
reread from the disk or corrected by ECC. Usually caused by power
fluctuations or noise spikes.
A tape automation system that sequentially loads and unloads
stacker
tape cartridges. does not provide random access to cartridges of the data
stored on them.
A type of motor that moves in discrete amounts with each
stepper
electrical pulse.
The reel of tape contained within the DLTtape cartridge.
supply reel
DLTtape IV, for example, contains 1,800 feet (548.64 m) of tape.
The side of the tape that is coated with the magnetic material for
surface
recording data.
The data transfer rate of a tape drive in native
sustained transfer rate
mode. for example, the DLT 7000 has a sustained transfer rate of 5 MB in
native mode, and up to 10 MB at 2:1 compression.
Makers of computer systems and tape library
system manufacturers
systems.
A recording technique introduced
Symmetric Phase Recording (SPR)
with the DLT 7000 that writes data at alternating angles in a herringbone
pattern thereby eliminating the need for guard bands between data
tracks, and providing higher data density.
Tracks per Inch. A DLT 7000 tape drive, for example, writes data a
T
TPI
density of 416 tpi, or 208 tracks across the width of the half-inch DLTtape
media.
The reel inside every DLT tape drive onto which DLTtape
take-up reel
media is wound. The in-the-drive take-up reel enables DLT tape systems
to operate using a single-reel cartridge and thereby pack more tape and
data into every cartridge.
The path through which tape moves from the cartridge, past
tape path
the read/write head, and onto the take-up reel. The patented DLT drive
head guide assembly provides a gentle and solid path that ensures
tracking accuracy and long tape life.
A UNIX operating system command that stands for "create tape
tar
archives" and/or extract files.
TCM
SuperLoader User's Guide 271