Western Digital 4x 3TB Red 3.5" SATA III Internal Hard Drive Bundle (WD30EFRX)

WD Red NAS internal hard drives are designed and tested to meet the unique requirements of NAS systems with up to five bays. They are engineered to run cool and quiet while offering optimum compatibility for demanding 24x7 environments. These reliable drives are backed by an industry-leading 3-year limited warranty.