WD
Western Digital 22TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD221KFGX
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
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.
SpecPicks Verdict
SpecPicks classifies Western Digital 22TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RP… as a mid-pack option worth checking against alternatives in the external storage category, based on 2,134 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. WD's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Solid 4.0★ customer rating
- ✓ Large, well-vetted feedback pool (2,134 reviews)
- ✓ For RAID-optimized NAS systems with unlimited number of bays
- ✓ Backed by WD's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key 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
Full Specifications
| Brand | WD |
|---|---|
| Color | Red |
| Model Name | WD Red Pro |
| Read Speed | 445 Bytes Per Second |
| Unit Count | 1.0 Count |
| Form Factor | 3.5-inch |
| Model Number | WD221KFGX-SPB9KN0 |
| Built-In Media | Internal Hard Drive |
| Item Type Name | Hard Drive |
| Hard-Drive Size | 22 TB |
| Mfr Part Number | WD221KFGX |
| Number of Items | 1 |
| Special Feature | Not_Performance_Used |
| Installation Type | Internal Hard Drive |
Ready to buy?
Western Digital 22TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD221KFGX is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
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