I&#x27;m pretty sure that economics, not technology, was the hold up.  Pressurized hard drives have been around for a long time, the halon filled IBM 3390 being a classic example [0].  Yes helium is more difficult to contain than halon, but it is a long solved problem.<p>[0] (eevblog #395) <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>