Velocity at which the disk media spins within a hard disk, measured in rpm (revolutions per minute). By the late 1990s EIDE hard disks generally features a 5,400rpm or 7,200 mechanism, while SCSI drives were usually either 7,200rpm or 10,000rpm.

The rate at which the spindle is turning. Expressed in RPM. Must always be set according to workpiece diameter.

See RPM.

Is measured in (RPMs) (revolutions per minute) With higher RPMs, a specific point on the disc platter is under the read/write heads more often, allowing faster data access times.

The rotational speed of the spindle programmed in revolutions per minute (rpm).