Seagate SkyHawk 20TB SATA III 3.5" 7200 RPM HDD (ST20000VE002) - Bleepbox
Seagate Exos X20 and IronWolf Pro 20TB Expand Retail 20TB HDD Options
Seagate Exos X20 ST20000NM007D - hard drive - 20 TB - SATA 6Gb/s - ST20000NM007D - Internal Hard Drives - CDW.com
Seagate One Touch Hub 20TB External USB-C and USB 3.0 Desktop Hard Drive - Black (STLC20000400) - Walmart.com
Seagate IronWolf Pro ST20000NE000 - Hard drive - 20 TB - internal - 3.5" - SATA 6Gb/s - 7200 rpm - buffer: 256 MB - with 3 years Seagate Rescue Data Recovery | Dell USA