Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 128 MB Cache, 3.5" - WD40EFZZ

Available in capacities ranging from 2TB to 12TB
For RAID-optimized NAS systems with up to 8 bays
Designed for Continuous Operation
Backed by World-Class Support and Warranty
Tuned for NAS with NASware

WD Red Plus drives are designed to handle workloads of power users and small to medium business NAS environments. WD Red Plus drives deliver the speed and capacity required to store. protect and share growing amounts of data in mid-sized RAID-optimized NAS systems with increased power efficiency.