I have explored those options, but: 1) It's more expensive for more complexity and shrinking disk space as the hidden flaw. 2) The heat will kill those drives

I have explored those options, but: 1) It's more expensive for more complexity and shrinking disk space as the hidden flaw. 2) The heat will kill those drives looong before my 100 year expected lifetime for my setup. Also with 8x 64GB drives per motherboard manually mounted I can fix things over time.