Basic Hard Disk Drive Components

Many types of hard disk drives are on the market, but nearly all share the same basic physical components. Some differences might exist in the quality of these components (and in the quality of the materials used to make them), but the operational characteristics of most drives are similar. The basic components of a typical hard disk drive are as follows:

Disk platters

Read/write heads

Head actuator mechanism

Spindle motor (inside platter hub)

Logic board (controller or printed circuit board)

Cables and connectors