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Seagate IronWolf 12TB SATA III 3.5" Internal NAS Hard Drive, 7200 RPM ST12000VN0008
Synology HAT5300-12T Enterprise 12TB HDD SATA III 6Gb/s 512e 7200 RPM 256MB Cache 3.5" Internal Hard Drive - Newegg.com
Toshiba MG07ACA Series MG07ACA12TE 12TB SATA 6Gb/s 256MB 7200RPM 3.5" HDD (500 or fewer power-on hours) - Central Valley Computer Parts