Seagate set to launch mass-market 20TB HDDs | TechRadar
Western Digital Launches 20 TB Mechanical Hard Drive With OptiNAND Technology
Amazon.com: WD Ultrastar HC560 WUH722020BLE6L4 20TB 7200RPM 3.5" SE SATA HDD 0F38785 : Electronics
Amazon.com: Western Digital 20TB WD Gold Enterprise Class SATA Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD201KRYZ : Electronics