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20tb Hard Drive Comparison - April 2026

7 Best 20tb Hard Drive In the UK

Overview:
1
Best Choice
9.9Exceptional
2
9.7Exceptional
3
9.4Excellent
4
9.2Excellent
5
Best Value
9.0Excellent
6
8.9Very Good
7
8.8Very Good
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Model

Seagate Expansion Desktop 20TB, External Hard Drive, USB 3.0, Data Rescue Services (STKP20000400)
Model
Seagate One Touch Hub 20TB, External Hard Drive Desktop HDD, USB-C & USB 3.0 port, for Computer Desktop Workstation PC Laptop Mac (STLC20000400)
Model
Seagate IronWolf Pro 20TB, Enterprise Internal NAS HDD, CMR 3.5 Inch, SATA 6GB/s, 7.200 RPM, 256MB Cache for RAID NAS, Rescue Services - Frustration Free Packaging (ST20000NTZ01)
Model
WD 22TB Elements External Hard Drive, Desktop HDD storage, USB 3.0 compatible, Fast Transfer rates, Easy add on storage for all your pictures, videos, music and documents, Black
Model
WD 20TB Elements External Hard Drive, Desktop HDD storage, USB 3.0 compatible, Fast Transfer rates, Plug-and-play storage for all your pictures, videos, music and documents, Black
Model
LaCie d2 Professional 20TB — USB‑C Desktop External Hard Drive, for Mac & Windows — Rescue Data Recovery included
Model
WD 18TB Elements Desktop External Hard Drive - USB 3.0, Black

Brand

Seagate
Brand
Seagate
Brand
Seagate
Brand
WD
Brand
WD
Brand
LaCie
Brand
WD

Reviews

816,786 reviews
Reviews
782,745 reviews
Reviews
8,943 reviews
Reviews
62,883 reviews
Reviews
62,874 reviews
Reviews
4,887 reviews
Reviews
62,817 reviews

Tech Specs

form factor

‎3.5-inch
form factor
3.5-inch
form factor
3.5-inch
form factor
Portable
form factor
Portable
form factor
all in one
form factor
Portable

item weight

‎1.18 kg
item weight
1.25 kg
item weight
690 g
item weight
900 g
item weight
1.3 kg
item weight
1.4 kg
item weight
500 g

hard disk description

‎Mechanical Hard Disk
hard disk description
Mechanische Festplatte
hard disk description
Mechanical Hard Disk
hard disk description
Mechanical Hard Disk
hard disk description
Mechanical Hard Disk
hard disk description
Solid State Drive
hard disk description
Mechanical Hard Disk

guaranteed software updates until

‎unknown
guaranteed software updates until
unknown
guaranteed software updates until
unknown
guaranteed software updates until
unknown
guaranteed software updates until
unknown
guaranteed software updates until
unknown
guaranteed software updates until
unknown

hard drive interface

‎USB 3.0
hard drive interface
USB 1.1
hard drive interface
Serial ATA
hard drive interface
USB 3.0
hard drive interface
USB 3.0
hard drive interface
Thunderbolt 3
hard drive interface
USB 3.0

color

‎Black
color
Black - Hub
color
NAS HDD PRO
color
black
color
Black
color
d2 Professional
color
Black

Hard Drive Size

‎20 TB
Hard Drive Size
1.00
Hard Drive Size
20 TB
Hard Drive Size
22 TB
Hard Drive Size
20 TB
Hard Drive Size
20 TB
Hard Drive Size
18 TB

product dimensions

‎17.6 x 3.66 x 12.06 cm; 1.18 kg
product dimensions
22.2 x 9.3 x 23.5 cm 1.25 kg
product dimensions
14.7 x 10.18 x 2.61 cm 690 g
product dimensions
-
product dimensions
25.4 x 5.08 x 6.86 cm 1.3 kg
product dimensions
18.85 x 6 x 13 cm 1.4 kg
product dimensions
13.5 x 4.8 x 16.58 cm 500 g

are batteries included

‎No
are batteries included
No
are batteries included
-
are batteries included
No
are batteries included
No
are batteries included
No
are batteries included
No

hardware platform

‎Linux, Mac, PC
hardware platform
-
hardware platform
PC
hardware platform
PC
hardware platform
PC
hardware platform
-
hardware platform
PC

processor type

-
processor type
None
processor type
-
processor type
None
processor type
Others
processor type
-
processor type
None

hard disk rotational speed

‎5400 RPM
hard disk rotational speed
-
hard disk rotational speed
7200 RPM
hard disk rotational speed
-
hard disk rotational speed
-
hard disk rotational speed
7200 RPM
hard disk rotational speed
-

Available On

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
    1
    Seagate
    22% Off

    Seagate Expansion Desktop 20TB, External Hard Drive, USB 3.0, Data Rescue Services (STKP20000400)

    Main highlights
    • Fast file transfers with USB 3.0
    • Enjoy peace of mind with the included limited warranty and Rescue Data Recovery Services
    • Easy-to-use desktop hard drive—simply plug in the power adapter and USB cable
    • Drag-and-drop file saving right out of the box
    • Automatic recognition of Windows and Mac computers for simple setup (Reformatting required for use with Time Machine)
  • 9.7
    2
    Seagate

    Seagate One Touch Hub 20TB, External Hard Drive Desktop HDD, USB-C & USB 3.0 port, for Computer Desktop Workstation PC Laptop Mac (STLC20000400)

    Why we love it

    Secure data with password protection and AES-256 encryption.
    Easy setup with Windows and Mac compatibility.
    Peace of mind with two-year warranty and Rescue Services.
    Main highlights
    • Password-protected external hard drive with USB hub to secure your digital life and AES-256-Hardware Encryption
    • Out-of-the-box compatibility with Windows and Mac computers
    • Includes Seagate Toolkit backup software for one-click and scheduled backups and file mirroring
    • Enjoy long-term peace of mind with the included two-year limited warranty and Rescue Data Recovery Services
    • A front-facing USB-C and USB 3.0 port for connecting and recharging devices — even if your computer is off
  • 9.4
    3
    Seagate

    Seagate IronWolf Pro 20TB, Enterprise Internal NAS HDD, CMR 3.5 Inch, SATA 6GB/s, 7.200 RPM, 256MB Cache for RAID NAS, Rescue Services - Frustration Free Packaging (ST20000NTZ01)

    Main highlights
    • Peace of Mind with Data Recovery: Complimentary 3 year Rescue Data Recovery Services for a hassle-free, zero-cost data recovery experience
    • Optimised 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
    • Class-Leading Dependability: Up to 550 TB/year workload rating, 2.5M hours MTBF, and 5-year limited warranty for unparalleled total cost of ownership (TCO)

Our ranking system

The topchoice.co.uk Team selects top-of-the-line items from a wide selection and conducts rigorous evaluations on almost all the products available on the internet. We rank each product based on how well it matches our criteria.We can ensure that the product is well-tested with the help of our expertise, experts, and artificial intelligence technology. topchoice.co.uk requires consistent care for the products we review, ensuring that our assessments are always accurate and up to date.

Features

Our team of experts analyzes key attributes, capabilities, significance, and many more depending on the type of product to determine its effectiveness.
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Consumer Reviews

We ensure an evaluation of the ratings using references all over the internet for each product. With the help of our AI technology and professional review teams, we give weight to the worth of individual user experiences.
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Popularity

Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.
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Value for money

topchoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.

When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.