Western Digital Purple WD30PURZ 3TB 3.5" IntelliPower SATA Surveillance Hard Drive
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Amazon.com: Western Digital 3TB WD Blue PC Internal Hard Drive HDD - 5400 RPM Class, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD30EZAZ : Electronics
Amazon.com: Western Digital Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30PURX [Old Version] : Electronics
Seagate Barracuda 3TB Surveillance Hard Drive - SATA 6Gb/s 64MB Cache 3.5-Inch Internal Drive (ST3000LM024)
3TB WD PURPLE SATA 6GB/S 64MB 3.5IN SURVEILLANCE HARD DRIVE - WD30PURX - 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 NAS Hard Drive, Internal Hard Drive (2 TB to 6 TB) | Western Digital
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Western Digital Red NAS Hard Drive 3TB IntelliPower - Newegg.com