User`s guide

Chapter 5 Theory
Track Layout
LTO-3 Half-Height Tape Drive User’s Guide 45
A track group is a set of tracks that is recorded concurrently. The sets of
11 data tracks in a data band are data sub-bands. There are 16 data sub-
bands per data band. The data tracks are accessed in a serpentine manner.
A wrap is a track group recorded in the physical forward or physical
reverse direction. The wraps are recorded in a serpentine fashion starting
in data band 0. The tape contains 44 track groups, 22 written in the
forward direction and 22 written in the reverse direction. Even-numbered
wraps are recorded in the forward direction (BOT to EOT), and odd-
numbered wraps are recorded in the reverse direction (EOT to BOT).
Figure 14
shows the layout of data on an LTO tape.
Figure 14 Layout of the Tracks
on LTO Ultrium Tapes
Tape edge
Even # wrap
Servo band
Odd # wrap
Tape edge
Even # wrap
Servo band
Odd # wrap
Sub-band 0
Sub-band 15
Sub-bands 1 through 14
(not shown)
Beginning of tape (BOT)
End of tape (EOT)
Data Band