The safety systems of the read / write heads in such cases ensure that the system stops working. At least the hard disks do not break, but they cannot be temporarily stored. For example, according to security researchers working on the problem, security systems could be prevented from storing surveillance cameras at the desired time.
Corresponding attacks on hard disks have been discussed several times in the past and there were also corresponding attempts. Now there is a real research paper on the problem, which was prepared by the universities of Princeton and Purdue and systematically examined many storage media.
For some models quite different and often several frequency ranges could be identified where the effect in question can be observed.The lower pitches start at over 2,000 hertz. But sometimes it goes up to nearly 13,000 hertz.Even though such attacks are not exactly trivially practicable, it is necessary to implement soundproofing measures, especially in more sensitive areas.