WD Red Pro 4TB 3.5′ NAS Hard Drive, SATA 6 Gb/s, ITR 267 MB/s, 7200RPM, 256MB Cache, CMR Tech, 3.5-inchFORM FACTOR, 5yrs wty | WD4005FFBX

WD Red Pro 4TB 3.5′ NAS Hard Drive, SATA 6 Gb/s, ITR 267 MB/s, 7200RPM, 256MB Cache, CMR Tech, 3.5-inchFORM FACTOR, 5yrs wty

Enterprise-class hard drives engineered to deliver high performance and reliability to commercial and enterprise NAS environments.

WD Red® Pro drives are engineered to handle high-intensity workloads in 24×7 multi-user commercial and enterprise NAS environments. WD Red Pro drives deliver the performance, scalability and dependability businesses require to store, share and collaborate on large amounts of data in multi-bay RAID-optimized NAS systems.

Optimized for NAS with NASware™
Western Digital’s exclusive NASware™ technology fine tunes drive parameters to match NAS system workloads, which helps increase performance and reliability.

Designed for Continuous Operation
WD Red Pro hard drives are designed to handle the rigorous demands of high-intensity 24×7 multi-user NAS environments and increase system durability.

Engineered with Industry-Leading Technology
WD Red Pro 22TB and 24TB hard drives feature Western Digital’s proprietary OptiNAND™ technology which leverages integrated iNAND embedded flash to perform key housekeeping functions, freeing up more capacity and improving the overall drive performance.

Full Specifications
Features
Ideal for creative pros, medium to large businesses, and commercial/enterprise NAS systems
For RAID-optimized NAS systems with an unlimited number of bays

Rated for 550TB/year workloads1 and up to 2.5M hours MTBF

Capacity
4TB
Form Factor
3.5-Inch
Connector
SATA
Compatibility
RAID-optimized NAS systems with unlimited # of bays

Interface
SATA
Transfer Rate
up to 217MB/s
Disk Speed (RPM)
7200 RPM
Recording Technology
CMR
Cache Size
256MB
Warranty
5-Year Limited Warranty
Dimensions (L x W x H)
147mm x 101.6mm x 26.1mm
Weight
Model Number
WD4005FFBX
Operating Temperature
0°C to 65°C
Non-Operating Temperature
-40°C to 70°C
Certifications
BSMI, ICES-003/NMB-003, CE, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB-Scheme, TUV

Product Last Updated: 11/12/2025

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