General Knoppix support for those who've read the FAQ at the Wiki
Hitachi Ultrastar HUA723030ALA640 3TB 7200 RPM 64MB SATA 3.0Gb/s 3.5" Hard Drive
$49.49
Certified Refurbished 5TB WD Elements Portable Hard Drive - RWDBU6Y0050BBK-WESN
$89.99
Western Digital WD5000AAKX 500GB 7200RPM 6Gb/s 3.5in SATA Hard Drive
$25.49
Seagate Exos X20 ST20000NM003D 20 TB Hard Drive - Internal - SAS (12Gb/s SAS) -
$299.95
Seagate IronWolf 12TB 7200RPM SATA 6Gb/s 256MB 3.5" NAS Hard Drive ST12000VN0007
$133.99
Seagate ST12000NM0117 12TB 256MB 7200RPM 3.5" SATA 6.0Gb/s Enterprise Hard Drive
$124.99
Fanxiang 512GB 1TB 2TB 4TB SSD 2.5'' SATA III 6Gb/s TLC Internal Hard Drive Lot
$12.99
Seagate Skyhawk AI ST12000VX0017 12TB 7200RPM 3.5" SATA 6.0Gb/s Surveillance HDD
$115.99
ST4000NM0034 SEAGATE 4TB 7.2K 12G LFF 3.5" SAS 512E ENTERPRISE HARD DRIVE
$49.99
Seagate (Recertified) Exos X 24TB Internal Hard Drive HDD - 3.5 In CMR SATA 6Gb/
$305.99