How reliable is this hard drive for continuous operation?

I have only had the new WD Red Plus Drives for a few weeks. I purchased them to replace a set of (four) other Western Digital drives that I originally purchased in 2017 or 2018, so that's 8 or 9 years. I had no problems with those drives until a month ago, when it became impossible to write to one of the drives. My drives are used as backup to my desk continue and for long-term storage of information. The old drives were NOT used in continuous operation.

What measures have been taken to balance the drive for increased reliability?

The WD Red Plus hard drives incorporate enhanced dual-plane balance control technology to significantly improve balance and increase overall drive performance and reliability.

Is this hard drive optimized for use with NAS systems?

Yes, this hard drive is optimized for use with NAS systems.

WD Elements 14TB USB 3.0 Desktop External Hard Drive WDBWLG0140HBK-NESN Black

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WD Red Plus 12TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s, CMR, 512MB Cache, 3.5 Inch - WD120EFGX

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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
Retail or OEM packing may vary

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

Overview

Specs

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WD Red Plus internal HDDs are designed to handle workloads for power users and small to medium business NAS environments. WD Red Plus drives deliver the speed and capacity required to store, protect and share growing amounts of data in mid-sized RAID-optimized NAS systems with increased power efficiency.

Best Seller Ranking	#24 in Desktop Internal Hard Drives

Model
Brand	WD
Series	Red Plus
Model	WD120EFGX

Performance
Interface	SATA 6.0Gb/s
Capacity	12TB
NAND Flash Memory Type	Hard Drives
Recording Technology	CMR
RPM	7200 RPM
Cache	512MB

Features
Features	Tuned 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 Since your NAS system is always on, a reliable drive is essential. WD Red Plus hard drives are designed for systems that operate 24x7, giving users the confidence of knowing they can reliably access their data. Tested for Dependable Compatibility Western Digital partners with a wide range of NAS system vendors for extensive testing to ensure compatibility with most NAS enclosures. Optimized for Lower TCO WD Red Plus drives are engineered to use less power (versus previous models) and run cooler, which reduces operating costs and helps reduce heat in thermally challenged NAS boxes. Powered for Strong Performance Despite using less power, the drives have plenty of bandwidth to handle the mixed performance demands of multi-drive NAS systems. Balanced for Increased Reliability Hard drives that are not properly balanced may cause excessive vibration and noise in multi-drive systems, which could reduce hard drive life span and degrade the performance over time. Our enhanced dual-plane balance control technology significantly improves balance and increases overall drive performance and reliability. Backed by World-Class Support and Warranty As an industry-leading hard drive manufacturer, Western Digital stands behind their NAS storage solutions with the assurance of a 3-year limited warranty5 and world-class support services for hassle free data storage.
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	July 16, 2026

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WD Red Plus 12TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s, CMR, 512MB Cache, 3.5 Inch - WD120EFGX

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Item#: 9SIC7XHM1J5503

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WD Red Plus 12TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s, CMR, 512MB Cache, 3.5 Inch - WD120EFGX

Learn more about the Western Digital WD120EFGX

Customer Reviews of the Western Digital WD120EFGX

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info