WD Western Digital WD Red Plus 8TB 3.5' NAS HDD SATA 6 Gb/s 5640RPM 185MB Now: $336.60 MSRP: Was: Western Digital WD Blue 500GB 2.5' HDD SATA 6Gb/s 5400RPM 16MB Cache CMR Tech 2yrs Wty WD Blue PC H…