ZFS is an enterprise software RAID, and 1:1 RAM to TB is the minimum recommended requirement for a production server (e.g. enterprise implementations).

I’ve seen many users stating they have far far less than 1:1 without issues. I recall a r/DataHoarder user saying they have 100+ TB’s and only 16 or 32GB RAM, which is not fully utilized, so it all depends on your usage profile and the size/scale of r/w ops occurring during peak periods.

That wasn’t what was reported, and is largely false. What was reported is that people are buying NEW drives which have FARM values indicating years of use. Also the most likely cause being a crypto project going under, and dropping petabytes in capacity over the last 12 months.

This type of fraud hasn’t been proven in the used HDD space. There are many reasons used drives are sold other than exceeding usable life or warranty. Companies over forecast capacity or simply go bankrupt all the time (see crypto / ai), and those drives are sold. Considering drives are 30-50% more expensive now than they were 6-12 months ago the incentive and profitability of resale has increased.