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WD Red Pro WD221KFGX 22 TB

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WD Red Pro WD221KFGX 22 TB
Red5 year warranty
2 TB
64/7200 CMR
4 TB
5FFBX
4 TB
256/7200
6 TB
6001FFWX
6 TB
6002FFWX
6 TB
6005FFBX
8 TB
256/7200
10 TB
256/7200
10 TB
512/7200 CMR
12 TB
256 MB
12 TB
512 MB
14 TB
142KFGX
16 TB18 TB20 TB
285MB/s
22 TB24 TB26 TB
Main
Placementbuilt-in
TypeHDD
Featuresserver
Volume22 TB
Form factor3.5 "
ConnectionSATA3
Manufacturer's warranty5 years
Technical specs
Cache memory512 MB
Record technologyCMR
RPM7200 rpm
Data transfer rate265 MB/s
MTBF1 M h
MTBF (on/off)600 K
Features
Featuresfor video surveillance
General
Size147x102x26 mm
Weight674 g
Added to E-CatalogJuly 2023
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog WD 2026 - new arrivals, bestsellers, and the most relevant models WD.
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WD WD 22TB Red Pro 7200rpm HDD 512MB Cache Internal NAS Hard Drive (WD221KFGX) WD221KFGX

Built for NAS systems, the WD Red Pro 22TB Internal NAS Hard Drive is optimised for all your high-intensity workloads. The 22... moreTB capacity and max data transfer rates of 255MB/s provide ample room for both you and your colleagues to quickly share and back up any precious work files into your NAS device. The 3.5’’ form factor means this NAS HDD can easily fit into most standard 24-bay NAS systems. Plus, compatibility with NASware 3.0 technology facilitates optimum performance whilst experiencing heavy loads along with extensive data protection. WD Red Pro 22TB Internal NAS Hard Drive at a Glance: Designed for NAS systems 22TB capacity 7200 RPM 512MB cache SATA III connectivity – max data transfer rate of 255MB/s Exclusive NASware 3.0 technology Optimised for Business Use The WD Red Pro 22TB Internal NAS Hard Drive comes equipped with everything you need to streamline your business. With 22TB of storage space, there’s ample room for both your and your employee's files and projects, which can be quickly accessed whenever necessary thanks to the 255MB/s data transfer rates. The 512MB internal cache improves overall performance, storing any of your more frequently used files for rapid access, and reducing the number of writes and reads to the main storage. To ensure the WD Red Pro 22TB Internal NAS Hard Drive can handle all your high-intensity workloads, it features onboard NASware 3.0 technology. This NAS HDD has been optimised for peak performance and reliability, along with robust data protection. The 3.5’’ form factor means this drive will seamlessly fit into a range of 24-bay NAS devices and features a multi-axis shock sensor that automatically detects any shock events. Once it does, dynamic flight technology adjusts each read and write function to protect your precious data for incredible long-lasting reliability. What’s more, 3D Active Balance Plus ensures this HDD remains perfectly balanced within your NAS device, reducing excess vibration and noise and enhancing the overall lifespan of your hard drive. The WD Red Pro 22TB Internal NAS Hard Drive has a max speed of 72000 RPM but features extended thermal cycle burn-in to prevent unwanted excess heat from damaging the drive.
Overclockers.co.uk
Delivery: to United Kingdom
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£764.99
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Western Digital WD221KFGX

For The Needs Of Large Companies:- The Wd Red™ Pro Hard Drives Were Specially Developed For Medium To Large Business Customer... mores And Are Available For Nas Systems With Up To 24 Drive Bays. Targeted For High-Intensity Workloads In 24x7 Environments, The Wd Red™ Pro Family Is Ideal For Archiving And Sharing Content, As Well As Building Raid Arrays In Advanced Operating Systems Such As Zfs And Other File Systems. These Hard Drives Increase Efficiency By Allowing Your Employees To Quickly Share Files And Reliably Back Up Folders In Your Nas Solution.Exclusive Nasware™ 3.0 Technology:- The Exclusive And Modern Nasware™ 3.0 Firmware Technology Ensures Seamless Integration, Robust Data Security And Optimal Performance For Heavily Used Nas Systems. Built Into Every Wd Red™ Pro Hard Drive, Nasware 3.0 Improves Your System´s Storage Performance With The Latest Technologies And Improved Compatibility, Integration, Upgradeability And Reliability.Engineered For Optimal Nas Compatibility:- Wd Red™ Pro Hard Drives With Nasware™ Technology Simplify Hard Drive Choice. Our Unique Algorithm Is Optimized For Nas Systems And Ensures The Right Balance Of Performance And Reliability In Nas And Raid Environments. In Short: Wd Red™ Pro Is The Hard Drive With The Highest Compatibility For Nas Enclosures. This Is Also Proven By Numbers. Wd Red™ Pro Hard Drives Are The Result Of Extensive Compatibility Testing And Extensive Integration Of Technologies From Our Nas Partners.Protection Against Impact For Drive Bays In Large Nas Systems:- Wd Red™ Pro Hard Drives Are Equipped With A Multi-Axis Shock Sensor To Detect Even The Slightest Shock And Dynamic Head Height Adjustment That Automatically Compensates For Shocks With Every Read/Write Operation, Protecting Your Data. The Combination Of These Technologies Provides Even More Hard Drive Protection In Large 24-Bay Nas Environments And Increases Hard Drive Reliability.3d Active Balance Plus:- Our Advanced Dual Plane Mass Balancing Technology Greatly Improves The Overall Performance And Reliability Of The Drive. Disks That Are Not Properly Mass Balanced Can Cause Excessive Vibration And Noise In A Multi-Drive System, Reducing Disk Life And Degrading Performance Over Time.Healing Protection:- Because Wd Red™ Pro Hard Drives Are Designed Specifically For Raid And Nas Environments, They Have Special Error-Healing Mechanisms That Are Part Of Nasware™ 3.0 Technology. In This Way, Hard Disk Failures In Raid Systems Can Be Significantly Reduced.Comprehensive Hard Drive Tests:- A Nas Environment With Up To 24 Drive Bays Puts A Considerable Strain On A Hard Disk In Terms Of Increased Vibration And Heat Generation. That´s Why Every Wd Red™ Pro Hard Drive Undergoes Extensive Break-In Tests With Changing Temperatures, Which Ensure Even Higher Reliability In Operation.Extended Warranty Coverage:- Wd Red™ Pro Hard Drives Are Backed By A 5-Year Warranty For Added Peace Of Mind.Desktop Drives Versus Wd Red™ Pro:-
Tradeinn.com
Delivery: in United Kingdom
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£797.99
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Western Digital Red Pro internal hard drive 22 TB 7200 RPM 512 MB 3.5&

Western Digital Red Pro internal hard drive 22 TB 7200 RPM 512 MB 3.5" Serial ATA III WD Red™ Pro NAS HDD. For the Demands of... moreBig Business.Designed specifically with medium or large scale business customers in mind. WD Red™ Pro NAS HDDs are available for up to 24-bay NAS systems. Engineered to handle high-intensity workloads in 24x7 environments. WD Red™ Pro is ideal for archiving and sharing. as well as RAID array rebuilding on extended operating systems such as ZFS or other file systems. These drives add value to your business by enabling your employees to quickly share their files and back-up folders reliably in your NAS solution.Exclusive NASware™ 3.0 TechnologyOur exclusive advanced firmware technology. NASware™ 3.0. enables seamless integration. robust data protection and optimal performance for NAS systems operating under heavy demand. Built into every WD Red™ Pro hard drive. NASware 3.0’s advanced technology improves storage performance by increasing compatibility. integration. upgradeability. and reliability.Built for Optimum NAS CompatibilityWD Red™ Pro drives with NASware™ technology takes the guesswork out of selecting a drive. Optimized for NAS systems. our unique algorithm 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 NAS enclosures. But don’t take our word for it. WD Red™ Pro drives are a reflection of extensive NAS partner technology engagement and compatibility-testing.Larger NAS Bay Shock ProtectionWD Red™ Pro NAS HDDs 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 24-bay NAS environments and helps increase hard drive reliability.3D Active Balance PlusOur enhanced dual-plane balance control technology significantly 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 over time.Error Recovery PreventionBuilt specifically for RAID and NAS environments. WD Red™ Pro NAS HDDs come equipped with error recovery controls as part of NASware™ 3.0 technology to help reduce drive fallout in RAID applications.Extended Drive TestingA NAS environment that has up to 24 bays is very demanding on a hard drive with added 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 CoverageWD Red™ Pro NAS hard drives comes with a 5-year limited warranty for an even greater peace of mind.Desktop drives vs. WD Red™ ProDo right by your NAS and choose the drive purpose-built for NAS with an array
Pcnova.co.uk
Delivery: in United Kingdom
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£939.29
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Western Digital Red Pro internal hard drive 22 TB 7200 RPM 512 MB 3.5& WD221KFGX

Western Digital Red Pro internal hard drive 22 TB 7200 RPM 512 MB 3.5" Serial ATA III
LaptopHub.uk
Delivery: in United Kingdom
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£941.94
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WD Red Pro WD221KFGX - Hard drive - 22 TB - internal - 3.5" - SATA 6Gb/s - 7200 rpm - buffer: 512 MB

WDRedProWD221KFGX-Harddrive-22TB-internal-3.5"-SATA6Gb/s-7200rpm-buffer:512MB...
OnBuy.com
Delivery: in United Kingdom
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£951.14
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Series WD Red (NAS)Compare using chart →
Model overview based on user reviews  
The WD Red Pro series offers a range of capacities, including 6TB and 8TB options, known for their best-in-class speed. However, users have noted that these drives can become quite hot, with temperatures reaching up to 55 degrees in NAS systems, and they can be noisy, producing a noticeable buzz or crackling sound. This noise level, around 37 dB, might be disruptive for home use, especially if placed near sleeping areas. Despite these drawbacks, the drives are appreciated for their performance, and some users have observed improvements in newer models, possibly due to firmware updates. Overall, the WD Red Pro is a solid choice for those prioritizing speed and capacity, provided the noise and heat are manageable in their setup.
Pros

Cons

User reviews 3
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good model, liked it.
15 October 2017 
If a noise level of 37 dB is not critical, and good airflow because the best among 6TB does not exist yet. There are 3 HDDs of 6TB released in March 2017 - they show a heating of 53-55 degrees, a few days ago I bought another one made in May 2017 with a sensor heating up to 48 degrees, what is this - probably they changed the firmware??
The main thing is the speed of work - best in class 6 TB
Strong heating, in NAS Asustor 6210T up to 55 degrees; Under heavy load, it's somewhat noisy for home use - it buzzes loudly
use WD Red Pro month or more
Discuss
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The disc is not bad, but only for use where its noise won't be a disturbance.
16 August 2025 
Purchased the WD4003FFBX at the beginning of the year in a used condition with minimal operating hours. It performs well in operation. Compared to the Toshiba x300 4Tb, the Toshiba vibrates more, but during read-write moments, the knocking from the WD is unpleasant, which subjectively feels even worse than the Toshiba.
CMR, support for different sector sizes (i.e., the disk is converted to 4kn)
Noisier during intensive work moments than the Toshiba X300
Volodimir: use WD WD4003FFBX few months
Discuss
 Show Original
Very noisy - crackling
5 June 2021 
The 8TB drive is very noisy. It crackles during use. If you are buying it for a home NAS, place it somewhere away from where someone sleeps.
Volume
Noise
MrG0d: use WD WD8003FFBX less than month
Discuss
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WD Red Pro WD221KFGX configurations

Price for WD Red Pro WD221KFGX
WD Red Pro WD2002FFSX 2 TB
64/7200 CMR
from £215.352 offers
WD Red Pro WD4005FFBX 4 TB
5FFBX
from £226.9212 offers
WD Red Pro WD4003FFBX 4 TB
256/7200
from £245.003 offers
WD Red Pro WD6001FFWX 6 TB
6001FFWX
from £286.961 offer
WD Red Pro WD6002FFWX 6 TB
6002FFWX
from £241.573 offers
WD Red Pro WD6005FFBX 6 TB
6005FFBX
from £209.9414 offers
WD Red Pro WD8003FFBX 8 TB
256/7200
from £259.9917 offers
WD Red Pro WD101KFBX 10 TB
256/7200
from £268.001 offer
WD Red Pro WD103KFBX 10 TB
512/7200 CMR
from £377.1211 offers
WD Red Pro WD121KFBX 12 TB
256 MB
from £645.001 offer
WD Red Pro WD122KFBX 12 TB
512 MB
from £411.9511 offers
WD Red Pro WD142KFGX 14 TB
142KFGX
from £553.957 offers
WD Red Pro WD161KFGX 16 TBfrom £599.9912 offers
WD Red Pro WD181KFGX 18 TBfrom £639.366 offers
WD Red Pro WD202KFGX 20 TB
285MB/s
from £959.999 offers
WD Red Pro WD221KFGX 22 TBfrom £764.9913 offers
WD Red Pro WD240KFGX 24 TBfrom £829.9914 offers
WD Red Pro WD260KFGX 26 TBfrom £1,002.716 offers
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Hard Drive (HDD) WD WD221KFGX