The sound is not right. This clicker sounds like a Geiger counter ticking out of control. The HDD sound is much deeper. It should sound as if the minute hand on a clock decided to tick out of control.
replies(4):
On the ultra realistic end: take a dead hard drive, trim the head assembly back so it won't touch/scratch the platter surface, remove its original PCB and replace it with the simulator which now will be responsible for driving the motor and the voice coil. If there is some space left for SSD storage, slap that on as well and use the original power and data connections.