

That is you can take the heat and radiate it into space as Infrared radiation. IR radiation is able to travel through space as it is made of photons.
I’m not sure how effective this would be for the amount of heat generated by servers, but it’s not actually fully disqualified as I thought it would be.
This is how the International Space Station deals with waste heat: https://www.nasa.gov/wp-content/uploads/2021/02/473486main_iss_atcs_overview.pdf
It’s very slow compared with convective cooling, definitely not practical for running any high-powered computer hardware, slow enough that it can be considered disqualified.














It looks like the pivots are on opposite sides of the disk platters, which means that if one fails you essentially lose access to the data on that side.
That’s not really appreciably different from the same failure happening in a single-pivot drive, though it is more mechanical complexity packed into the same amount of space.
I’m not sure what the failure rates on HDD pivots are like. In my own experience the control board or motor is more likely to fail.