Amazon.com: Seagate Barracuda 3TB 7200rpm SATA III Internal Hard Drive (ST3000DM001) : Electronics
5TB 3.5" Sata Internal Hard Drive
MABOTO 3TB Video HDD Internal Hard Disk Drive 5900 RPM SATA 6Gb/s 3.5-inch 64MB Cache ST3000VX010 - Walmart.com
Amazon.com: Seagate BarraCuda 3TB Internal Hard Drive HDD – 2.5 Inch Sata 6Gb/s 5400 RPM 128 MB Cache for Computer Desktop PC (ST3000LM024) : Electronics
WD Red™ Plus NAS Internal Hard Drive 3.5" HDD | Western Digital
3TB Internal hard drive for security camera|Diiiz
Amazon.com: MaxDigitalData 3TB 32MB Cache 5700PM SATA 6.0Gb/s 3.5" Internal Surveillance CCTV DVR Hard Drive (MD3000GSA3257DVR) - 2 Year Warranty : Electronics
Amazon.com: Seagate SkyHawk 3TB Surveillance Internal Hard Drive HDD – 3.5 Inch Sata 6Gb/s 256MB Cache for DVR NVR Security Camera System with Drive Health Management (ST3000VX010) : Electronics
Seagate IronWolf 3TB 64MB Cache SATA 6.0Gb/s NAS Internal Hard Drive ,Perfect for 1-8 BAY NAS system