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WD Red Pro NAS Hard Drive - 16TB

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Model Number: WD161KFGX
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16TB 7200 RPM 5-Year Limited Warranty Network Attached Storage (NAS)
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Available in capacities from 2TB to 26TB1, WD Red Pro drives are engineered for high-intensity, 24×7 workloads of multi-user enterprise and AI NAS environments. Delivers the performance, scalability, and dependability for businesses to store, share, and collaborate on large volumes of data in RAID-optimized systems.

Key Features
  • Handle rigorous 24×7 multi-user NAS workloads with a rating up to 550TB/yr3 — ideal for high-intensity AI NAS demands.
  • Scale from 2TB to 26TB1 with enterprise-class capacity, rated up to 2.5M hours MTBF2 for dependable, long-run reliability.
  • NASware technology fine-tunes drive performance and compatibility across NAS and AI NAS systems.
  • Time-Limited Error Recovery (TLER) keeps RAID-powered NAS and AI NAS systems running without interruption.
  • Proven in tower and rack-mount NAS at any bay count, backed by a 5-year limited warranty4.​
Key Features
Specifications Data Sheet Support
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Features

Enterprise-class storage ideal to power AI NAS at every scale.

WD Red Pro SATA HDD Feature 1

Powering Smarter Content Management​

WD Red Pro HDDs deliver the capacity and durability AI-driven NAS solutions depend on, supporting advanced data management and content aggregation. As AI NAS stores more structured and unstructured data, WD Red Pro scales to keep pace — boosting productivity and storage efficiency.

Durability for Heavy Workloads

With a workload rating of up to 550TB/yr3, WD Red Pro hard drives are designed to handle the rigorous demands of high-intensity, 24×7 multi-user NAS environments. Continuous operation is exactly what these drives are built for — so your AI NAS runs hard without slowing down.
WD Red Pro Feature 2
WD Red Pro Feature 3

Enterprise-Class Capacity and Reliability

WD Red Pro drives are offered across a wide range of capacity points — from 2TB to 26TB1— to scale with the needs of your organization. Rated at up to 2.5 million hours mean time before failure (MTBF)2, they deliver the enterprise-class reliability that always-on AI NAS environments depend on.

Optimized for RAID

WD Red Pro drives feature Time-Limited Error Recovery (TLER), helping ensure uninterrupted operation in RAID-powered NAS and AI NAS systems. Proven in tower and rack-mount systems with any number of bays, WD Red Pro is the right drive for AI NAS at every scale — backed by a 5-year limited warranty4.
WD Red Pro Feature 4

Specifications

Capacity
16TB
Technologies
NASware, OptiNAND, ArmorCache
Model Number
WD161KFGX
Recording Technology
CMR
Interface
SATA
Connector
SATA
Form Factor
3.5-Inch
Transfer Rate
up to 259MB/s
Disk Speed (RPM)
7200 RPM
Cache Size
512MB
Endurance (TBW)
550TB/year
Warranty
5-Year Limited Warranty
Operating Temperature
0°C to 65°C
Non-Operating Temperature
-40°C to 70°C
Dimensions (L x W x H)
147mm x 101.6mm x 26.1mm
Weight
690gms
Certifications
BSMI, ICES-003/NMB-003, CE, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB-Scheme, TUV, UL
Use Cases
Network Attached Storage (NAS)
Compatibility

RAID-optimized NAS systems with unlimited # of bays

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Additional Models

2TB, 64MB WD2002FFSX
4TB, 256MB WD4005FFBX
6TB, 256MB WD6005FFBX
8TB, 256MB WD8005FFBX
10TB, 512MB WD103KFBX
10TB, 256MB WD102KFBX
12TB, 512MB WD122KFBX
14TB, 512MB WD142KFGX
16TB, 512MB WD161KFGX
18TB, 512MB WD181KFGX
20TB, 512MB WD202KFGX
22TB, 512MB WD221KFGX
24TB, 512MB WD241KFGX
26TB, 512MB WD260KFGX

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Frequently Asked Questions

WD Red Pro drives are purpose-built for multi-user NAS environments, where workloads involve mixed storage and access such as file sharing, backups, virtualization, and collaboration. They are optimized using WD NASware technology, which specifically tunes drive parameters for NAS systems to improve performance and reliability.

Corporate Responsibility at WD

We commit to positive corporate citizenship in all aspects of our business.

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Disclosures

  1. 1MB = 1 million bytes, 1GB = 1 billion bytes, 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment.​
  2. Projected Values. When final, MTBF are based on a sample population and are estimated by statistical measurements and acceleration algorithms under typical operating conditions, workload of 220TB/year and drive temperature of 40°C. Derating of MTBF will occur above these parameters, up to 550TB writes per year. MTBF do not predict an individual drive’s reliability and do not constitute a warranty.​
  3. Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred × (8760 / recorded power-on hours)). Workload Rate will vary depending on your hardware and software components and configurations.​
  4. See https://www.westerndigital.com/support/store/warranty-policy for region-specific warranty details.
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