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WD - Red Pro 18TB NAS Internal Hard Drive

Model: WD181KFGX
SKU: 6523108
Sold byBest Buy

Customers are saying

Customers often highlight the product's excellent reliability, noting that it works great without any issues. They also appreciate its generous capacity, providing tons of space. However, some customers mention that the product can be a little noisy initially.

Generated by AI based on customer reviews.

Storage Capacity

18000GB
Features

  • Demands of Big Business

    Designed specifically with medium or large scale business customers, WD Red Pro drives are available for up to 24-bay NAS systems. Engineered to handle high-intensity workloads in 24x7 environments. Ideal for archiving and sharing, as well as RAID array extended systems.

  • Technology

    Exclusive advanced firmware technology, NASware 3.0, enables seamless integration, robust data protection and optimal performance for NAS systems operating under heavy demand. Improves storage performance by increasing compatibility, integration, upgradeability, and reliability.

  • Compatibility

    Optimized for NAS systems, unique algorithm balances performance and reliability in NAS and RAID environments. WD Red Plus drive is one of the most compatible drives available for NAS enclosures. Reflection of extensive NAS partner technology engagement and compatibility testing.

  • 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. Protects the drives in larger 24-bay NAS environments.

  • 3D Active Balance

    Our enhanced dual-plane balance control technology improves the overall drive performance and reliability. Hard drives that are not properly balanced may cause excessive vibration and noise in a multi-drive system, reduce the hard drive life span, and degrade the performance.

  • Error Recovery Prevention

    Built specifically for RAID and NAS environments, WD Red Pro drives come equipped with error recovery controls as part of NASware 3.0 technology to help reduce drive fallout in RAID applications

  • Extended Drive Testing

    NAS environment that has up to 24 bays is very demanding on a hard drive with add?ed vibration and heat. This is why every WD Red Pro drive is shipped with extended thermal cycle burn-in testing to help ensure each drive is tested for extended reliable operation

  • Longer Warranty Coverage

    WD Red Pro drives comes with a 5-year limited warranty for an even greater peace of mind.

See all features
Specifications
  • Storage Capacity
    18000 gigabytes
    Storage Drive Type
    HDD
    Rotational Speed
    7200 revolutions per minute
    Maximum Read Speed
    272 megabytes per second
    Maximum Write Speed
    272 megabytes per second
    Form Factor
    3.5 in.
See all specifications
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Reviews

Rating 4 out of 5 stars with 27 reviews

5 star rating. 14 reviews4 star rating. 7 reviews2 star rating. 3 reviews1 star rating. 3 reviews
85% would recommend to a friend
Customers are sayingCustomers often highlight the product's excellent reliability, noting that it works great without any issues. They also appreciate its generous capacity, providing tons of space. However, some customers mention that the product can be a little noisy initially.
This summary was generated by AI based on customer reviews.
  • Reliability (13)
  • Capacity (5)
  • Noise Level (5)

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 4 out of 5 stars

    Good drive

    A little slow to spin up. A little noisy at first. Other than that, I have no other issues. Speed is good. Works great with my NAS. Tons of space. I’ve always trusted WD drives.

    Posted by Bwabbit71

  • Rated 4 out of 5 stars

    Works great, smidge noisy

    Hard drive works great. It has been running 24 hours straight since I purchased. Subtle noise, but annoying but otherwise fine.

    Posted by CoffeeMoves

  • Rated 5 out of 5 stars

    Great high capacity HDD.

    I am using my 18TB WD Red Pro as a local backup repository for my PC. It replaces a smaller HDD that was doing a good job but was getting to be too small. So far, it's been doing a fine job, I've had no issues with it. I installed it in a previously vacant slot in a multi-drive external HDD enclosure without any problems.

    Posted by Samsung70

  • Rated 2 out of 5 stars

    Buyers beware.

    The Pros: Great when it ran in my UGREEN NASync DXP4800 Plus in a raid5 setup. A bit of spin up time maybe 10ish seconds in lag but that could be the hdds or the nas so I wont fault them. The Cons: Bought 4 around April 2025. 1 was doa(clicking) and replaced by best buy because they were within the exchange window. A 2nd failed Feb 2026 less than 1 year later. They are being used in a nas so literally their intended purpose. Only around 6800hr of power on time, at a 50% failure rate for HDDs that you pay a premium for is a bit disappointing. Bad batch? Who knows! Also these are not covered by best buy total protection so be buy at your own risk.

    Posted by JinC

  • Rated 4 out of 5 stars

    Excellent NAS Drive - Waited for price drop

    I have been using WD drives for over 15 years with no issues. Therefore, I was not surprised to find that this 18 TB drive is an excellent drive. However, the first drive I received was defective and could not be formatted, which caused Windows Explorer to freeze. The second drive I received was without fault and now have it running in my home NAS.

    Posted by Saad

See all customer reviews
From the Manufacturer

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Pros for WD - Red Pro 18TB NAS Internal Hard Drive
Reliability, CapacityReliability, Data Recovery, Noise LevelThere were no pros for this product—Overall Performance
Cons for WD - Red Pro 18TB NAS Internal Hard Drive
Noise LevelThere were no cons for this product—There were no cons for this product—There were no cons for this product—

Specs

Questions & Answers

  • What is the cache buffer size of this hard drive?

    The cache buffer size is 512 megabytes.

    This question and answer was generated by AI based on customer and product data.

  • What is the maximum read speed of this WD hard drive?

    The maximum read speed for this hard drive is 272 megabytes per second.

    This question and answer was generated by AI based on customer and product data.

  • What is the storage capacity of this hard drive?

    This hard drive has a storage capacity of 18 terabytes.

    This question and answer was generated by AI based on customer and product data.

  • Why is 3D Active Balance an important feature for this hard drive?

    3D Active Balance technology improves drive performance and reliability and helps to reduce excessive vibration and noise that can occur in a multi-drive system.

    This question and answer was generated by AI based on customer and product data.

  • Does this hard drive have a warranty, and if so, how long is it?

    Yes, this hard drive comes with a 5-year limited warranty.

    This question and answer was generated by AI based on customer and product data.
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