Amazon.com: Seagate Skyhawk 6TB Surveillance Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 256MB Cache for DVR NVR Security Camera System with Drive Health Management (ST6000VX0023) : Electronics
Seagate Skyhawk ST6000VX0023 6TB Surveillance Hard Drive 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive - 3 Years Warranty
Seagate 6 TB Surveillance Internal Hard Drive HDD, Model Name/Number: ST6000VX0023