You can go even further and get refurbished enterprise HDDs for nothing and they will still last years. These things are built to last 2 decades at least and they will be used for 2 or 3 then refurb and sold for 1/3 the price. I’m about to set up a raid5 server with 4x4tbs and they cost be slightly less than $40 a piece. At that price I could get an entire second set as backups and still pay less than a set of 4 new ones. lol.