Is there a way to tell if this is an SMR or CMR drive?

Completely untrue. The Red Pro line are all CMR. The WD101EFBX is from the Plus line, which is also CMR, but not as good.

Is there a way to tell if this is an SMR or CMR drive?

The WD Red Pro 10TB NAS Hard Disk Drive uses CMR (Conventional Magnetic Recording) technology.

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WD Red Pro 10TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 256MB Cache 3.5 Inch - WD102KFBX

(17) Write a Review

Available in capacities ranging from 2 to 22TB with support for NAS systems with up to 24 bays
Supports up to 300TB/year workload rate
Enhanced reliability with 3D Active Balance™ Plus technology and error recovery controls with NASware™ 3.0 technology
Extended drive testing to ensure each drive is tested for extended reliable operation
5-year limited warranty

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

Overview

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10TB WD102KFBX Red Pro NAS 7200RPM 256MB

Best Seller Ranking	#34 in Desktop Internal Hard Drives

Model
Brand	WD
Series	Red Pro
Model	WD102KFBX
Packaging	Bare Drive

Performance
Interface	SATA 6.0Gb/s
Capacity	10TB
NAND Flash Memory Type	Others
Recording Technology	CMR
RPM	7200 RPM
Cache	256MB

Features
Features	NAS for Big Business Increase the efficiency and productivity of your business with WD RedPro hard drives for up to 16 bay NAS systems. WD Red Pro comes equipped with NASware 3.0, which increases system compatibility allowing for seamless integration with your existing network infrastructure. Add value to your business by enabling your employees to quickly share their files and back up folders reliably with WD RedPro NAS hard drives in your NAS solution. Exclusive NASware 3.0 technology Our exclusive advanced firmware technology, NASware 3.0 enables seamless integration, robust data protection and optimal performance for NAS systems operating under heavy demand. Built for optimum NAS compatibility Desktop drives aren't purpose-built for NAS. But WD Red Pro drives with NASware 3.0 technology are purpose-built for NAS. Our exclusive technology takes the guesswork out of selecting a drive and balances performance and reliability in NAS and RAID environments. Simply put, a WD Red Pro drive is one of the most compatible drives available for medium to large NAS enclosures. But don't take our word for it. WD Red Pro drives are a reflection of an extensive NAS partner technology engagement and compatibility-testing resulting in a leading compatibility list for NAS systems. Larger NAS Bay Shock Protection WD Red Pro drives are equipped with a multi-axis shock sensor that automatically detects subtle shock events and dynamic fly height technology which adjusts each read-write function to compensate and protect the data. This combination of technology further protects the drives in larger 1 to 16 bay NAS environments and helps increase hard drive reliability.
Usage	Enterprise NAS Hard Drives

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

Additional Information
First Listed on Newegg	March 20, 2026

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Return for refund within: 30 days
Return for replacement within: non-replaceable
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