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Western Digital 22TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD221KFGX

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Availability: Only 1 left in stock, order soon!
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Arrives Tuesday, Mar 24
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Capacity: 22TB


Style: Red Pro


Features

  • Available in capacities ranging from 2 to 22TB(1) | (1) 1GB = 1 billion bytes and 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment.
  • For RAID-optimized NAS systems with unlimited number of bays
  • Rated for 550TB/yr workload rate(2) | (2) Annualized Workload Rate = TB transferred x (8760 / recorded power-on hours). The maximum rated workload is specified for operating at typical temperature of 40C. Workload Rate will vary depending on your hardware and software components and configurations.
  • Designed to handle the demands of high-intensity 24x7 multi-user NAS environments
  • Western Digital partners with a wide range of NAS system vendors for extensive testing to ensure compatibility with most NAS enclosures

Description

Built for power users and medium-sized businesses struggling to manage rapidly growing amounts of data, WD Red Pro drives are specifically designed for NAS systems with up to 24 bays. Engineered to handle high-intensity workloads in 24x7 environments, WD Red Pro is ideal for archiving, protecting, and sharing data with a large number of users or multiple data-hungry applications. These drives add value to your business by enabling your employees to quickly share files, back up folders, and access data quickly and reliably in your NAS system.

Digital Storage Capacity: 22 TB


Hard Disk Interface: Serial ATA-600


Connectivity Technology: SATA


Brand: WD


Special Feature: Not_Performance_Used


Hard Disk Form Factor: 3.5 Inches


Hard Disk Description: Mechanical Hard Disk


Compatible Devices: NAS Server


Installation Type: Internal Hard Drive


Color: Red


Hard Drive: ‎22 TB Mechanical Hard Disk


Brand: ‎WD


Series: ‎WD Red Pro


Item model number: ‎WD221KFGX-SPB9KN0


Item Weight: ‎1.48 pounds


Product Dimensions: ‎5.79 x 4 x 1.03 inches


Item Dimensions LxWxH: ‎5.79 x 4 x 1.03 inches


Color: ‎Red


Flash Memory Size: ‎22 TB


Hard Drive Interface: ‎Serial ATA-600


Hard Drive Rotational Speed: ‎7200 RPM


Batteries: ‎1 AAAA batteries required.


Manufacturer: ‎Western Digital Technologies, Inc.


Language: ‎English


Date First Available: ‎July 18, 2022


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Mar 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • WesternDigital 8TB
Capacity: 8TB Style: Red Plus
This is an excellent NAS hard drive with 8 TB of storage, specifically designed for home or small business NAS systems. Its stable performance, low noise level, and good energy efficiency make it ideal for backups, multimedia storage, or RAID configurations. Many users highlight its reliability and ample capacity for large amounts of data. Some mention that it can be a bit noisy during intense data transfers, but overall, it offers great value for money and reliable 24/7 operation. ... show more
Reviewed in the United States on January 5, 2026 by Ana Lucia Gonzalez

  • It’s a Hard Drive. It’s Big. That’s Pretty Much It.
Capacity: 18TB Style: Red Pro
So, here it is: the Western Digital 18TB WD Red Pro NAS Internal Hard Drive — aka the “Big Boy” of data storage. What can I say? It’s a hard drive. It’s quite big. Like, “I could bench press this if I really wanted to” big. But please don’t — it’s expensive. 18 terabytes of space means I could theoretically store every embarrassing photo, weird Spotify playlist, and downloaded PDF I’ve ever made. The digital equivalent of a hoarder’s dream garage. Installation was straightforward: slot it in, screw it down, pray to the tech gods it spins up on the first try. Spoiler alert: it did. No strange noises, no smoke, just pure, reliable mechanical magic. Pros: So much space, I could hoard cat videos for decades. Designed for NAS, which means it’s the responsible adult of hard drives — steady, dependable, and ready to work overtime. Quiet enough that I almost forget it’s humming away, plotting how to store my entire digital life. Cons: It’s heavy. Not “drop on your foot” heavy, but “maybe I should use two hands” heavy. No flashy lights or cool holograms, just good old-fashioned spinning platters. Does not come with a personal assistant to organize your files or delete your bad decisions. Final Verdict: ⭐️⭐️⭐️⭐️⭐️ – 5 stars. It stores data. It’s big. It doesn’t complain. Honestly, what more do you want from a hard drive? ... show more
Reviewed in the United States on October 17, 2025 by Dave Wright

  • Rock-Solid 26TB WD Red Pro NAS Drive
Capacity: 26TB Style: Red Pro
I ordered the 26TB Western Digital Red Pro NAS internal hard drive, and it exceeded expectations right from the start. It arrived fast, was packaged securely, and installed without any issues. Once up and running, the drive performed exactly as expected—quiet, cool, and incredibly reliable. Transfer speeds are smooth, and it integrated seamlessly into my NAS setup. For large storage needs, backups, or expanding a home server, this drive is a powerhouse. If you’re looking for top-tier performance, huge capacity, and dependable WD Red Pro quality, this 26TB model is a fantastic choice. Would absolutely purchase again. ... show more
Reviewed in the United States on November 28, 2025 by Greg

  • Good, but noisey.
Capacity: 20TB Style: Red Pro
Works well, just very noisey on boot, coming out of sleep and when reading. Didn't notice my 8TB, but this one I definitely notice every time it's in use.
Reviewed in the United States on January 5, 2026 by David May

  • A Great Option for NAS Storage
Capacity: 10TB Style: Red Plus
As someone who uses my NAS daily, I know how important it is to have a stable and reliable option for storage. I have been using these for years without issue. Great options for storage sizes and relatively quiet for a hard drive
Reviewed in the United States on February 8, 2026 by Kyle L.

  • A Big Hard Drive that Works
Capacity: 12TB Style: Red Plus
I use this in an external hard drive caddy - one of the things that looks like a toaster an connects to the computer by USB 3. It works well and is as fast as can be expected for a drive of this specification in an extern caddy. The thing about hard drives is that your chances of getting a good one that will work well for years are huge. There is a trifling small chance you will get a dud that will fail after not much use. Happily, in this case I got a good one. ... show more
Reviewed in the United States on January 5, 2026 by Photomagica

  • Highly recommended.
Capacity: 22TB Style: Red Pro
A nice addition to my NAS. Have a set that has been running continuously for over a year and a second set for several months now. If I had to complain about something, it would be that they seem a little on the loud side. The NAS is in the back room, so it is no bother. These WD Red drives are good for the price. The speed is good, storage capacity is ample. I expect many years of performance out of these drives. ... show more
Reviewed in the United States on December 31, 2025 by Amazon Customer

  • Drive was DOA, hopefully replacement is not.
Capacity: 8TB Style: Red Plus
Drive is/was DOA. Neither my NAS nor my PC would recognize it. My NAS didn't see it at all. My windows PC saw it as anew drive, but when I tried to initialize it I got "The request failed due to a fatal device hardware error". I know bad drives can happen, and not overly worried about this. I've scheduled a return and have already ordered the same drive again as it most closely matches the 12 other slightly older version WD 8 TB drives I have in my NAS already. This is to replace the 13th, which is having issues. I will update this review after getting and testing the new drive, assuming it works properly. But for now, I need to note the bad drive. Update: The replacement drive showed up fine on both my PC, and my NAS (which is what this drive was intended for all along.) Only had it a couple days so can't forecast long term health, but at least it can be used. I've updated from 1 to 3 stars for now. The annoyance of the delay and the 50% success rate means I don't feel comfortable rating it any higher. I may raise it later after more sustained use. As noted above, my NAS is entirely WD 8gb drives, and I've been very happy with them now for a long time. So overall I rate WD highly. Just not this particular experience. ... show more
Reviewed in the United States on November 7, 2025 by Bacchus

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