Access arm

Updated: 04/26/2017 by Computer Hope

Alternatively referred to as read/write head arm, head arm, or actuator arm, the access arm is in every mechanical hard drive; similar in appearance to the arm of a record player. As the platter spins, the access arm adjusts the read/write heads to facilitate the reading, writing, or deletion of information. The image shows the inside of a hard drive.

Inside a computer hard disk drive

Hard drive terms, Voice coil