So i had an old hdd with the same problem, buzzing and high pitched noise. So i decided to buy a new one, Seagate Firegate sshd 1tb and same sound. Link to the recording: https://www.dropbox.com/s/8z61dg3hisfk6jw/20171011_174225.mp4?dl=0
Now i wonder, ard these normal sounds that this sshd is...