Which cache is correct for the 10TB WD100EFGX? The title says 512 and the drive selection button says 256?

Per ChatGPT, For the WD Red Plus WD100EFGX 10TB NAS hard drive, the official cache (buffer) size is 512 MB according to multiple current specs listings and reseller datasheets. However, it is possible to see listings online claiming 256 MB cache for the same model — that’s most likely due to incorrect listings, seller errors, or confusion with similar part numbers (e.g., WD101EFBX is another 10 TB Red Plus SKU that uses 256 MB cache). Hope that helps

Can I use the HD 10T|WD WD100EFGX for QNAP NAS drives?

Western Digital partners with a wide range of NAS system vendors for extensive testing to ensure compatibility with most NAS enclosures.

How does the HD 10T|WD WD100EFGX perform in a home NAS server setup?

The WD Red Plus 10TB NAS Hard Disk Drive is designed for NAS systems, optimized for continuous operation, and features Western Digital’s exclusive NASware technology to enhance performance and reliability. It is rated for a workload of 180TB/year and has been tested for dependable compatibility with most NAS enclosures.

Is the HD 10T|WD WD100EFGX suitable for a small office NAS servers?

WD Red Plus hard drives are designed for systems that operate 24x7, making them suitable for NAS systems, which includes small office NAS servers.

What is the durability of this hard drive in terms of workload?

The hard drive is rated for a workload of 180TB/year.

How does this hard drive perform in terms of speed and capacity?

The hard drive has a capacity of 10TB and operates at 7200 RPM.

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WD Red Plus 10TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s, CMR, 512MB Cache, 3.5 Inch - WD100EFGX

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Options: 10TB 512MB Cache

10TB 512MB Cache
8TB
6TB 256MB Cache
6TB 64MB Cache
4TB
3TB 64MB Cache
1TB 64MB Cache

Available in capacities ranging from 2TB to 12TB
For RAID-optimized NAS systems with up to 8 bays
Rated for 180TB/year workload and 1M hours MTBF
3-year limited warranty

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

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10TB WD RED PLUS INTERNAL NAS HDD 3.5IN

Best Seller Ranking	#1 in Desktop Internal Hard Drives

Model
Brand	WD
Series	Red Plus
Model	WD100EFGX

Performance
Interface	SATA 6.0Gb/s
Capacity	10TB
NAND Flash Memory Type	Hard Drive
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	May 20, 2025

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Limited Warranty period (parts): 5 years
Limited Warranty period (labor): 5 years
Read full details

Return Policies

Return for refund within: 30 days

Return for replacement within: 30 days

This item is covered by Newegg.com's 30-Day Return Policy.
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Manufacturer Contact Info

Manufacturer Product Page
Manufacturer Website
Support Phone: 1-800-275-4932
Support Email: [email protected]
Support Website
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Warranty, Returns, And Additional Information

Warranty

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Item#: N82E16822234588

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Sponsored Products

WD Red Plus 10TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s, CMR, 512MB Cache, 3.5 Inch - WD100EFGX

Learn more about the Western Digital WD100EFGX

Customer Reviews of the Western Digital WD100EFGX

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info