WD Red 4TB SATA 6Gb/ s 64MB Cache Internal 3,5inch 24x7 optimized for SOHO NAS systems NASware HDD Bulk

WD Red 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.