Seagate has introduced the Exos M series, a range of enterprise-grade mechanical hard drives available in 30TB and 32TB capacities. The two models, the 30TB CMR ST30000NM004K and the 32TB SMR ST32000NM003K, each offer a minimum of 3TB per disk and use a standard 3.
I stopped buying seagates when I had 4 of their 2TB barracuda drives die within 6 months... constantly was RMAing them. Finally got pissed and sold them and bought WD reds, still got 2 of the reds in my Nas Playing hot backups with nearly 8 years of power time.