Tim Martin wrote:

No, seeking isn't much of an issue, and hasn't been for a long time.
Rotational delay can be a bigger problem; for typical access patterns, the
computer spends more time waiting for the disk to spin round than it does
for seek head movement.

I remember back in the day of the $500 10 MB hard drive in a PC that
the data was interleaved on the platter and that you could increase the
transfer speed (and apparent computer performance) by finding the
optmium interleaving for your system. (Still) computer guru and advice
columnist Steve Gibson made his name with the Spinrite utility that
optimized the disk interleaving automatically. The interleaving factor
was something that you set during low-level formatting, using Debug.

I guess they decided that interleaving wasn't necessary with modern
speeds. Maybe it's time to take a look at it again?