Comparison Seagate SkyHawk [ST4000VX013] vs Seagate SkyHawk [ST2000VX015] what is better?
Amazon.com: Seagate Skyhawk ST4000VX013 4 TB Hard Drive - 3.5" Internal - SATA (SATA/600) - Network Video Recorder, Video Surveillance System Device Supported : Electronics
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Seagate SkyHawk 4TB Surveillance Hard Drive 256MB Cache SATA 6.0Gb/s NVR DVR 3.5" Internal HDD ST4000VX013 - Newegg.com