Seagate announces that it is now prepared to market enterprise- and server-grade hard-drives with capacities of 16TB for the first time. The Exos X16 is a helium-based 7200rpm drive, whereas the IronWolf 16TB and IronWolf Pro 16TB are NAS drives. Tencent Cloud has already picked up X16s for use in its operation.
https://www.notebookcheck.net/Seagate-intros-world-first-16TB-Exos-HDD-and-IronWolf-NAS-drives.423041.0.html