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Seagate SkyHawk 6TB Surveillance Hard Drive - SATA 6Gb/s 64MB Cache 3.5-Inch Internal Drive (ST6000VX0023)
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Seagate SkyHawk 6TB Surveillance Hard Drive 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive ST6000VX0023 - Newegg.com
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Amazon.com: WD Purple 6TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD60PURX [Old Version] : Electronics
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