WD 2TB RED PLUS 128MB CMR 3.5IN

WD Blue WD20EZAZ – hard drive – 2 TB – SATA 6Gb/s

WD Blue WD20SPZX 2 TB 2.5 Internal Hard Drive – SATA – 5400rpm – 128 MB Buffer

WD Purple WD22PURZ – hard drive – 2 TB – SATA 6Gb/s

WD Blue WD30EZAZ – Hard drive – 3 TB – internal – 3.5 – SATA 6Gb/s – 5400 rpm – buffer: 256 MB

WD Purple WD30PURZ – hard drive – 3 TB – SATA 6Gb/s