The Free On-line Dictionary of Computing (30 December 2018):

minimum seek time

    (Or track-to-track seek time) The time it takes to
   move the head of a disk drive from one track to the next.
   The minimum seek time gives a good measure of the speed of the
   drive in a single-user/single-process environment where
   successive read/write request are largely correlated and thus
   if correlated data is stored in nearby cylinders most seeks
   are from one cylinder to the next.

   (1997-07-15)