SINGLE BULK PACK WD Red (WD30EFRX) is the only hard drive designed for NAS systems that have 1-5 drive bays. The drives are designed and extensively tested for compatibility in the unique 24x7 operating environment and demanding system requirements of home and small office NAS. 3TB, SATA 6Gb/s, 64MB cache, IntelliPower Rotational Speed.
SINGLE BULK PACK Western Digital Serial ATA 6Gb/s Black Power, 3.5" Internal Hard Drive 2TB, 7200 RPM. 64MB buffer. Our all new next-generation WD Black drives deliver improved performance that heightens the experience in your PC playground...