by Dinesh Thakur

Cylinder The set of all the TRACKS on a HARD DISK drive with multiple PLATTERS that may be read at the same time. All the tracks are the same distance from the central spindle, so they can be imagined as tracing a cylinder in space. The HEADS on all the platters move together in a parallel motion - a sequence of data stored within the same cylinder can be read at optimum speed without requiring any movement.