WD HD3.5″ SATA3 4TB WD4003FFBX / 24×7 /NAS (Di)

WD Red™ (DMSMR) remains the primary option for home office/home office applications with light to medium workloads and long downtime. WD Red™ Plus (CMR) addresses the higher workload demands of small and medium businesses as well as the needs of the ZFS community. WD Red™ Pro (CMR) remains our high-performance solution for businesses with NAS systems with larger drive bay counts and intensive workloads.