WD Red Plus 4TB NAS 3.5" Internal Hard Drive 5400 RPM Class, SATA 6 Gb/s, CMR, 64MB Cache

Packed with power to handle the small- to medium-sized business NAS environments and increased workloads for SOHO Built and tested for up to 8-bay NAS systems, these drives give you the flexibility, versatility, and confidence in storing and sharing your precious home and work files Available in capacities ranging from 1-14TB with support for up to 8 bays 3D Active Balance, helps ensure your date is protected from excessive vibration and noise in a NAS or RAID environment reduces the degradation of your drive over time 5400RPM performance class Supports up to 180TB/yr workload rate NASware firmware for compatibility 3-year limited warranty