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20tb Hard Drive Comparison - August 2025
| 1 Best Choice  9.9Exceptional | 2  9.8Exceptional | 3  9.7Exceptional | 4  9.6Exceptional | 5  9.5Excellent | 6  9.4Excellent |
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ModelWD 20TB Elements Desktop External Hard Drive, USB 3.0 drive for plug-and-play storage - WDBWLG0200HBK-NESN | Model Seagate 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 Western Digital 20TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD201KFGX | Model Seagate Exos X20 20TB Internal Hard Drive - 3.5 Inch Hyperscale SATA 6Gb/s HDD, 7200 RPM, 2.5M MTBF, 512e and 4Kn FastFormat, Low Latency with Enhanced Caching (ST20000NM007D) | Model Seagate Expansion Desktop 20TB, Externe Harde Schijf, 3.5", PC & Laptop, USB 3.0, Data Rescue Service (STKP20000400) | Model Seagate Exos X20 ST20000NM007D 20TB 7.2K RPM SATA 6Gb/s 3.5in Hard Drive (Renewed) |
BrandWestern Digital | Brand Seagate | Brand Western Digital | Brand Seagate | Brand Seagate | Brand Seagate |
Reviews | Reviews | Reviews | Reviews | Reviews  | Reviews - |
Features | |||||
Storage space 9.6 | Storage space 9.6 | Storage space 9.3 | Storage space 9.4 | Storage space 9.1 | Storage space 8.9 |
Tech Specs | |||||
product dimensions 5.31 x 1.89 x 6.53 inches | product dimensions 5.79 x 4.01 x 1.03 inches | product dimensions 5.79 x 4 x 1.03 inches | product dimensions 5.79 x 4.01 x 1.03 inches | product dimensions 6.93 x 1.44 x 4.75 inches | product dimensions - |
color Black | color Black | color Red | color black | color Black | color - |
item weight 1.98 pounds | item weight 1.7 pounds | item weight 1.52 pounds | item weight 1.5 pounds | item weight 2.59 pounds | item weight - |
item dimensions lxwxh 5.31 x 1.89 x 6.53 inches | item dimensions lxwxh 5.79 x 4.01 x 1.03 inches | item dimensions lxwxh 5.79 x 4 x 1.03 inches | item dimensions lxwxh 5.79 x 4.01 x 1.03 inches | item dimensions lxwxh 6.93 x 1.44 x 4.75 inches | item dimensions lxwxh - |
customer reviews4.5 4.5 out of 5 stars 21, 855 ratings 4.5 out of 5 stars | customer reviews 4.6 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 4, 440 ratings 4.5 out of 5 stars | customer reviews 4.4 4.4 out of 5 stars 4, 009 ratings 4.4 out of 5 stars | customer reviews 4.6 4.6 out of 5 stars 265, 086 ratings 4.6 out of 5 stars | customer reviews - |
hard drive interface USB 1.1 | hard drive interface eSATA | hard drive interface Serial ATA | hard drive interface eSATA | hard drive interface USB 3.0 | 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 20 TB Mechanical Hard Disk | hard drive 20 TB Mechanical Hard Disk | hard drive - |
hard drive rotational speed- | hard drive rotational speed 7200 RPM | hard drive rotational speed 7200 RPM | hard drive rotational speed 7200 RPM | hard drive rotational speed 7200 RPM | hard drive rotational speed - |
language- | language English | language English | language - | language English, English, English | language - |
flash memory size- | flash memory size - | flash memory size 20 TB | flash memory size 20 MB | flash memory size 20 TB | flash memory size - |
Review | Review - | Review | Review | Review - | Review - |
Available On   | 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
9.9
1Western DigitalWD 20TB Elements Desktop External Hard Drive, USB 3.0 drive for plug-and-play storage - WDBWLG0200HBK-NESN
9.6 Storage spaceWhy we love it
High-capacity storage for large data needs.
Plug-and-play for Windows; reformat for Mac.
Reliable and quiet operation.
-
9.8
2Seagate
Seagate 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)
9.6 Storage spaceWhy we love it
Reliable 24/7 performance with high workload rating.
Complimentary Rescue Data Recovery Services included.
Optimized for NAS with enhanced RAID performance.
20tb Hard Drive Buyer's Guide
Written by Jim WilliamsIntroduction
A 20 TB hard drive is a storage device used to store large amounts of data. It is an essential part of any computer system, and is suitable for a variety of applications. This buying guide will provide information on the features of 20 TB hard drives, the different types available, and what to consider when making a purchase.
Features
20 TB hard drives offer a large amount of storage capacity, up to 20 terabytes. They are usually available in either 2.5 inch or 3.5 inch form factors. The 2.5 inch drives are more portable and are typically used in laptops, while the 3.5 inch drives are larger and have more features. 20 TB hard drives offer a variety of features, such as RAID support, data encryption, and high speed data transfer rates, which vary depending on the model. 20 TB hard drives are also available in a variety of interfaces, such as SATA, SAS, and USB.
Types
There are a few different types of 20 TB hard drives available. The most common type is the traditional magnetic hard drive, which uses spinning disks to store data. Solid-state drives (SSDs) are another option, which use flash memory instead of spinning disks. SSDs are faster and more reliable than traditional hard drives, but they are also more expensive. Hybrid drives combine the features of both traditional hard drives and SSDs, and offer the best of both worlds. They are more expensive than either of the other two, but provide improved performance and reliability.
Considerations
When purchasing a 20 TB hard drive, there are a few things to consider. First, consider the speed and reliability of the drive. The speed of the drive is determined by its interface, such as SATA or SAS, and the data transfer rate, which is measured in megabytes per second (MBps). Reliability is important for storing important data, and is usually measured in mean time between failures (MTBF). The price of the drive is also important, and will vary depending on the features and capacity.
Compatibility
It is important to make sure that the 20 TB hard drive is compatible with your computer or other devices. Most hard drives are compatible with standard computer systems, but some are designed for specific applications. For example, there are hard drives designed for surveillance systems and gaming consoles. It is also important to make sure that the drive is compatible with the operating system of your computer, such as Windows or MacOS.
Conclusion
A 20 TB hard drive is a great choice for storing large amounts of data. They offer a variety of features, such as RAID support, data encryption, and high speed data transfer rates. Different types of hard drives are available, such as magnetic, solid-state, and hybrid drives. When making a purchase, consider the speed and reliability of the drive, the price, and the compatibility with your computer or other devices. With the right information, you can find the perfect 20 TB hard drive for your needs.
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.
