2.1 Device Configuration
Head
Head0
0
1
2
3
1
2
3
4
5
MHA2021ATMHA2032AT
Figure 2.2 Configuration of disk media heads
(3) Spindle motor
The disks are rotated by a direct drive
(4) Actuator
The actuator uses a revolving voice coil motor (VCM) structure which consumes low power and generates very little heat. The head assembly at the edge of the actuator arm is controlled and positioned by feedback of the servo information read by the read/write head. If the power is not on or if the spindle motor is stopped, the head assembly stays in the specific CSS zone on the disk and is fixed by a mechanical lock.
