Which reminds me a teardown EEVblog did on 1980s 11&quot; mainframe drive: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=CBjoWMA5d84" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=CBjoWMA5d84</a>