WD Red Pro WD161KFGX 16 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
Cheap Seagate ST16000VN001 16TB 7.2K RPM SATA 6GBPS | Refurbished
Seagate IronWolf Pro 16TB 7200 RPM SATA III 6Gb/s 3.5" Internal NAS CMR Hard Drive - Micro Center
ST16000NM003G - New - SEAGATE 16TB 7.2K RPM SATA III 3.5 INCH LARGE FORM FACTOR LFF EXOS X16 ENTERPRISE SELF ENCRYPTING SED 512E 4KN 6GB/S SATA3 256MB CACHE HARD DRIVE ( 16000GB )
New Dell Seagate Exos 16TB 7.2K SATA 6Gb/s 3.5" 512e Hard Drive 39XRY With Caddy | eBay
Refurbished: Seagate Exos X16 16TB SED SATA 6Gb/s 7200 RPM 3.5-Inch Enterprise Hard Drive (ST16000NM003G) - Newegg.com
16TB SATA 6Gb/s 7.2K RPM 3.5" HDD for Dell EMC – Water Panther