random_guy4171)You can get a decent 2TB HDD for ~$100 on sale2)75/2 = 353)It says he has 60 HDDs, which means some of those (possibly all) are less than 2 TB.Let's assume they are all 2TB35 2TB HDDs * $100 = $3500, just over half of your calculation.More likely scenario:10 2TB HDDs = 20TB * 100...