Don’t Be Afraid of Supersonic HDDs

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The Myth Of The Supersonic Disk Drive
I’ve heard folks promoting solid-state storage solutions and repeating the myth that spinning disks haven’t gotten faster than 15K RPM because it would mean that the airflow over the heads would become supersonic. While it’s a good story, and the thought of little tiny sonic booms inside a disk drive is amusing, there’s very little truth to the story.