HDD

Western Digital | Blue | 4TB | 5400rpm | 3.5″ | SATA 6.0Gb/s | 64MB |

Western Digital | Purple Surveillance | 3TB | 5400rpm | 3.5″ | SATA 6.0Gb/s | 64MB |

Seagate | SkyHawk | 3TB | 5900RPM | 3.5″ | SATA 6.0GB/s | 64MB

Seagate SkyHawk 4TB, 5900PM, 3.5″, SATA 6Gb/s, 64MB