@djsundog 16x 16TB drives (0.25pb) were under $5400 before Chia. the exos 16tb, quite the enterprise drive. for whatever reason it was stupid low price per GB & top notch performance. i think it just sold in huge volume was why it was so cheap, & not the highest density available.
you'd still need another $1000 for a drive array or whatever
but the power consumption would probably be much better than 128x 2TB drives! plus noise & size & perhaps long term maintenance cost benefits.
still it is fun as heck scoping older once-expensive-as-all-get-out hardware. im trying to get up the effort to sell some my own that have gonr chronically unused for years.