Amazon.com: Seagate IronWolf Pro 20TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage, Rescue Services (ST20000NEZ00) : Electronics
Seagate Exos X20 ST20000NM007D 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive - Newegg.com