Is it really at 5400 RPM? The WD spec sheet says that is just the firmware and the drive is really running at 7200 RPM. The The 7200 RPM drives all seems to have a loud hum and that is not good for a desktop NAS.

The WD Red Plus 14TB NAS Hard Disk Drive operates at 5400 RPM.

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WD Red Plus 14TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s, CMR, 512MB Cache, 3.5 Inch - WD140EFFX

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Options: 14TB 512MB Cache

14TB 512MB Cache
10TB 256MB Cache
8TB
6TB 256MB Cache
6TB 64MB Cache
3TB 64MB Cache
3TB 128MB Cache
2TB 64MB Cache
1TB 64MB Cache

Available in capacities ranging from 1-14TB with support for up to 8 bays
Supports up to 180 TB/yr workload rate
NASware firmware for compatibility
Small or medium business NAS systems in a 24x7 environment
3-year limited warranty

🔥Don't forget your OS, we have Windows 11 OEM, Download and USB versions available

Overview

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Model
Brand	WD
Series	Red Plus
Model	WD140EFFX

Performance
Interface	SATA 6.0Gb/s
Capacity	14TB
NAND Flash Memory Type	Hard Drive
RPM	5400 RPM
Cache	512MB

Features
Features	Available in capacities ranging from 1-14TB with support for up to 8 bays Supports up to 180 TB/yr workload rate NASware firmware for compatibility Small or medium business NAS systems in a 24x7 environment
Usage	For NAS systems

Dimensions
Form Factor	3.5"
Height (maximum)	26.10mm
Width (maximum)	101.60mm
Length (maximum)	147.00mm

Additional Information
First Listed on Newegg	March 02, 2026

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WD Red Plus 14TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s, CMR, 512MB Cache, 3.5 Inch - WD140EFFX

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WD Red Plus 14TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s, CMR, 512MB Cache, 3.5 Inch - WD140EFFX

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Customer Reviews of the Western Digital WD140EFFX

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Warranty, Returns, And Additional Information

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