Synology HAT5300 - hard drive - 12 TB - SATA 6Gb/s - HAT5300-12T - Internal Hard Drives - CDW.com
SanDisk Professional 12TB G-DRIVE PRO, Enterprise-Class External Desktop Hard Drive, Space Grey - SDPH51J-012T-NBAAD - Walmart.com
Seagate BarraCuda Pro 12TB Review - StorageReview.com
Amazon.com: HGST WD Ultrastar DC HC520 HUH721212AL4200 12TB HDD 7200 RPM SAS 12Gb/s Interface 4Kn ISE 3.5-Inch Helium Data Center Enterprise Internal Hard Disk Drive, Model: 0F29560 : Electronics