This B&H Kit
includes two WD 4TB Network HDD Retail Kits
. The Western Digital Red internal HDDs come equipped with a SATA 6 Gb/s interface and are specifically engineered to be used in 24/7 NAS storage environments as they feature a lower operating temperature and reduced power consumption. These reliable Red HDDs also come with a 35% MTBF improvement over standard desktop drives making for a more reliable NAS storage solution.