WD Red 4TB NAS Internal Hard Drive - 5400 RPM Class, SATA 6Gb/s, SMR, 256MB Cache, 3.5" - WD40EFAX
Specifically designed for use in NAS systems with up to 8 bays
Supports up to 180TB/yr workload rate
NASware firmware for compatibility
Small and home office NAS systems in a 24x7 environment