Western Digital WD Red Pro 20TB NAS HDD (WD202KFGX) — 3.5" SATA, 7200 RPM, 512MB Cache, CMR

Engineered for creative professionals, medium-to-large businesses and commercial/enterprise NAS deployments, the WD Red Pro 20TB (WD202KFGX) provides the durability and capacity needed for demanding storage environments. Designed for RAID-optimized NAS systems, it supports installations with an unlimited number of drive bays. Reliability specifications include a workload rating of 550TB/year workloads1 and an MTBF of up to 2.5M hours.