Western Digital Red WD40EFRX (4000 GB)

vs Comparable 3.5" SATA Hard Disks
Item 9809: Western Digital Red 4 TB WD40EFRX
BrandWestern Digital
FamilyRed
PartWD40EFRX
Size4000 GB
Cache64 MB
RPM
Form Factor3.5"
InterfaceSATA
Speed6 Gb/s
Warranty3 year
WD40EFRX Reviews2

NAS compatibility

WD eliminates the confusion. WD Red is the only hard drive designed for NAS systems that have 1 to 5 drive bays. The drives are designed and extensively tested for compatibility in the unique 24x7 operating environment and demanding system requirements of home and small business NAS.

Enhanced reliability

With a 35% MTBF improvement over standard desktop drives, the WD Red drive is designed and manufactured to be a more reliable and robust solution.

The secret is in the technology–NASware™

Advanced firmware technology built into every WD Red drive, enables seamless integration, robust data protection and optimal performance for systems operating in NAS and RAID environments. (wdc.com)

Disk Cache (MB) Size (GB) Warranty Years Best Price Vendor Value (GB/$)
Western Digital Red WD40EFRX 64 4000 3 0.00

Manufacturer's Specs

General
InterfaceSATA 6 Gb/s
Formatted Capacity4,000,787 MB
Capacity4 TB
User Sectors Per Drive7,814,037,168
Performance
Rotational SpeedIntelliPower *
Buffer Size64 MB
Buffer To Host (Serial ATA)6 Gb/s (Max)
MTBF1,000,000 hours
Power
Read/Write4.50 Watts
Idle3.30 Watts
Standby0.40 Watts
Sleep0.40 Watts
Acoustics
Idle Mode25 dBA (average)
Seek Mode 028 dBA (average)
Physical
Height26.1 mm
Depth147 mm
Width101.6 mm
Weight0.68 kg

Western Digital WD40EFRX Reviews & Benchmarks

Silent PC Review - Western Digital Red 4TB & Se 4TB Hard Drives - Nov. 7, 2013

Other Western Digital Red Reviews & Benchmarks

Legit Reviews - WD Red 3TB NAS Hard Drive Review - Dec. 11, 2012
Techgage - Western Digital Red NAS Hard Drive Review - Aug. 27, 2012
TechwareLabs - Western Digital Red Drive 2TB Hard Drive - Aug. 23, 2012
Silent PC Review - Western Digital Red 3TB & 1TB Hard Drives - Aug. 10, 2012
TweakTown - Western Digital Red Series Review: A Low Cost Validated NAS Specific HDD - July 18, 2012

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