R20GG - New - DELL EMC / WESTERN DIGITAL 18TB 7.2K RPM SAS III 3.5 INCH LARGE FORM FACTOR LFF ENTERPRISE CLASS ULTRASTAR DC HC550 SERIES ADVANCED FORMAT AF 512E 12GB/S SAS3
Refurbished: Seagate Exos X18 18TB SAS 12Gb/s 7200RPM 3.5" SED Server HDD (ST18000NM005J) - Newegg.com
Enterprise 18TB 7.2k 3.5" SAS Hard Drive w/ HP G8/G9/G10 Tray - SaveMyServer
Seagate 18TB Exos X18 SAS 12Gb s SED FastFormat 512e 4Kn 3.5" (ST18000NM005J)