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20tb Hdd Comparison - July 2025
| 1 Best Choice  9.8Exceptional | 2  9.7Exceptional | 3  9.5Excellent | 4 Best Value  9.4Excellent | 5  9.3Excellent |
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ModelSeagate IronWolf Pro, 20 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage (ST20000NT001) | Model WD 20TB Elements Desktop External Hard Drive, USB 3.0 drive for plug-and-play storage - WDBWLG0200HBK-NESN | Model Seagate ST20000NE000 IronWolf Pro 20TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM (Renewed) | Model Seagate Exos 22TB SATA HDD 6Gb/s 7200RPM 3.5-inch Enterprise Hard Drive (ST22000NM000C) (Renewed) | Model Seagate Exos X20 ST20000NM007D 20TB 7.2K RPM SATA 6Gb/s 3.5in Hard Drive (Renewed) |
BrandSeagate | Brand Western Digital | Brand Seagate | Brand Seagate | Brand Seagate |
Reviews | Reviews | Reviews  | Reviews - | Reviews - |
Tech Specs | ||||
color Black | color Black | color Black | color Silver | color - |
item weight 1.7 pounds | item weight 1.98 pounds | item weight 1.47 pounds | item weight 1.5 pounds | item weight - |
hard drive interface eSATA | hard drive interface USB 1.1 | hard drive interface Serial ATA-600 | hard drive interface Serial ATA-600 | hard drive interface - |
hard drive 20 TB Mechanical Hard Disk | hard drive 20 TB Mechanical Hard Disk | hard drive 20 TB Mechanical Hard Disk | hard drive 22 TB Mechanical Hard Disk | hard drive - |
product dimensions 5.79 x 4.01 x 1.03 inches | product dimensions 5.31 x 1.89 x 6.53 inches | product dimensions 8.9 x 7.2 x 2.4 inches | product dimensions - | product dimensions - |
item dimensions lxwxh 5.79 x 4.01 x 1.03 inches | item dimensions lxwxh 5.31 x 1.89 x 6.53 inches | item dimensions lxwxh 8.9 x 7.2 x 2.4 inches | item dimensions lxwxh - | item dimensions lxwxh - |
customer reviews4.6 4.6 out of 5 stars 13, 040 ratings 4.6 out of 5 stars | customer reviews 4.5 4.5 out of 5 stars 21, 855 ratings 4.5 out of 5 stars | customer reviews 4.4 4.4 out of 5 stars 3 ratings 4.4 out of 5 stars | customer reviews - | customer reviews - |
hard drive rotational speed 7200 RPM | hard drive rotational speed - | hard drive rotational speed 7200 RPM | hard drive rotational speed 7200 RPM | hard drive rotational speed - |
Review- | Review | Review - | Review - | Review - |
Available On  | Available On  | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.8
1SeagateSeagate IronWolf Pro, 20 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage (ST20000NT001)
Why we love it
Reliable 24/7 performance with high workload rating.
Complimentary Rescue Data Recovery Services included.
Optimized for NAS with enhanced RAID performance.
Main highlights- Peace of Mind with Data Recovery: Complimentary 3 year Rescue Data Recovery Services for a hassle-free, zero-cost data recovery experience
- Optimized for NAS: AgileArray with dual-plane balancing, time-limited error recovery (TLER), and rotational vibration (RV) sensors to deliver top RAID performance in multi-bay environments
- IronWolf Health Management: Helps protect data with prevention, intervention, and recovery recommendations to ensure peak system health
- High Performance: All-CMR (conventional magnetic recording) portfolio enables consistent, industry-leading 24×7 performance allowing users to access data anytime, anywhere.Average Operating Power (W) - 7.7W, Operating Temperature (drive reported, max °C) : 65, Operating Temperature (ambient, min °C) : 0
- Class-Leading Dependability: Up to 550TB/year workload rating, 2.5M hours MTBF, and 5-year limited warranty for unparalleled total cost of ownership (TCO)
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9.7
2Western Digital
WD 20TB Elements Desktop External Hard Drive, USB 3.0 drive for plug-and-play storage - WDBWLG0200HBK-NESN
Why we love it
High-capacity storage for large data needs.
Plug-and-play for Windows; reformat for Mac.
Reliable and quiet operation.
Main highlights- WD quality inside and out
- Plug-and-play ready for Windows PCs
- High-capacity add-on storage.Compatibility : Windows 10 plus, Reformatting required for use with MacOS.
- Fast data transfers
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9.5
3Seagate
Seagate ST20000NE000 IronWolf Pro 20TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM (Renewed)
Why we love it
Optimized for RAID setups.
Great for enterprise storage.
Reliable refurbished option.
Main highlights- Optimised for NAS with AgileArray: AgileArray enables Dual-Plane Balancing and TimeLimited Error Recovery to deliver best-in-class RAID performance in multi-bay systems.
- Manufacturer Recertified product, officially refurbished by Seagate.
- Built Tough: IronWolf Pro drives are rated for 300 TB/Y workload, allowing commercial and enterprise NAS users to seamlessly store, share and collaborate on large amounts of networked data.
- Best-Fit Applications: Commercial and Enterprise NAS, Video Production RAID and Shared Network Storage, Workstations and Servers
- All-CMR Portfolio: All IronWolf Pro drives utilise Conventional Magnetic Recording (CMR) technology for consistent, best-in-class NAS performance.
Our ranking system
At BestChoice.com, our team curates a selection of top products from a vast array available online, using a sophisticated ranking system based on carefully defined criteria.While traditional hands-on testing has its merits, our use of AI technology offers distinct advantages. AI allows us to process and analyze vast amounts of data from multiple sources, providing a comprehensive view that goes beyond what manual testing can achieve. This approach enables us to deliver insights that are aligned with current trends and consumer preferences, ensuring our reviews are both relevant and up-to-date.
Features
Our AI-driven analysis examines key attributes, capabilities, and other critical factors tailored to each product category. This method allows us to assess effectiveness from various perspectives, ensuring a well-rounded evaluation.
Consumer Reviews
We aggregate and evaluate consumer feedback from across the internet, giving weight to ratings and reviews that reflect the most reliable insights. AI enhances this process by filtering and prioritizing data, offering a balanced view without the need for direct personal endorsements.
Popularity
Our system also considers the popularity of products, analyzing factors such as market presence, reputation, and user satisfaction. By leveraging AI, we capture a comprehensive picture of a product's standing in the market, which may not always be evident through traditional testing.
Value for money
AI allows us to compare products based on attributes like price, specifications, and user feedback, helping to determine their value for money. This data-driven approach offers an efficient and reliable way to assess how products stack up against one another in terms of cost-effectiveness.
