Working of a HDD Integrated Circuit
The server hard disk drive integrated circuit includes a RAM, a disk control circuitry, write channel, a read channel, a servo circuit, a motor control circuit, and a digital signal processor.
The disk control circuitry receives and stores requests, exchanges digital data with the client and stores the digital data in RAM. The write channel generates a write signal to write data onto the HDD, and the read channel generates a read signal to read data from the HDD.
The servo circuit generates a motor control output signal to control the spindle motor and the head actuator. Finally, the digital signal processor initiates ‘Read’ and ‘Write’ operations, as needed to perform the requests of the client device.
The digital signal processor also performs file management, generates the motor control input signal, and processes the intermediate read signal to generate a read channel parameter.