6.3.5.1 Format geometry and dimensions govern performance. Data transfer speed, one aspect of performance, is a direct product of the number of tracks written and read simultaneously, as well as the tape- head speed, linear density and the channel-code. Similarly, physically smaller, lighter tape housings are faster to move in a robotic library. Data density is a product of:
6.3.5.1.1 tape length and thickness trade-offs
6.3.5.1.2 track width and pitch
6.3.5.1.3 linear density of data payload within each track