That's totally normal noise - it's caused by the head actuator moving back and forth to select different tracks. Some drives are noiser than others in this regard, but what's on your audio track is not unusual. It's not a reason to return the drive.
You might be able to reduce the volume by using rubber standoffs so that the vibration isn't transmitted to the case.
Silent PC Review has ratings of hard drives based on how noisy they are, look here