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Hdd 18tb Comparison - October 2025

6 Best Hdd 18tb In Canada

1
Best Choice
9.7Exceptional
2
Best Value
9.6Exceptional
3
9.3Excellent
4
9.1Excellent
5
9.0Excellent
6
8.9Very Good
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Model

Western Digital 18TB WD Purple Pro Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 512 MB Cache, 3.5" - WD181PURP
Model
WD 18TB Elements Desktop External Hard Drive, USB 3.0 External Hard Drive for Plug-and-Play Storage - WDBWLG0180HBK-NESN
Model
Seagate IronWolf Pro 16TB Enterprise NAS Internal HDD Hard Drive – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage, Rescue Services - FFP g (ST16000NTZ01)
Model
Western Digital 18TB WD Gold Enterprise Class Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD181KRYZ
Model
Western Digital 18TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD181KFGX
Model
WD 18TB My Book Desktop External Hard Drive, USB 3.0, External HDD with Password Protection and Auto Backup Software - WDBBGB0180HBK-NESN

Brand

Western Digital
Brand
WD
Brand
Seagate
Brand
Western Digital
Brand
Western Digital
Brand
WD

Reviews

2,704 reviews
Reviews
85,232 reviews
Reviews
110,172 reviews
Reviews
10,440 reviews
Reviews
900 reviews
Reviews
23,432 reviews

Features

Worth the money

8.4
Worth the money
9.3
Worth the money
9.1
Worth the money
9.1
Worth the money
8.1
Worth the money
7.4

Tech Specs

product dimensions

14.7 x 10.16 x 2.61 cm 793.79 g
product dimensions
13.49 x 4.8 x 16.59 cm 1.23 kg
product dimensions
10.16 x 14.48 x 2.62 cm 670 g
product dimensions
14.7 x 10.16 x 2.61 cm 793.79 g
product dimensions
2.61 x 14.7 x 10.16 cm 650 g
product dimensions
4.83 x 17.02 x 13.97 cm 1.28 kg

customer reviews

4.5 4.5 out of 5 stars 676 ratings 4.5 out of 5 stars
customer reviews
4.4 4.4 out of 5 stars 21, 308 ratings 4.4 out of 5 stars
customer reviews
4.6 4.6 out of 5 stars 27, 543 ratings 4.6 out of 5 stars
customer reviews
4.4 4.4 out of 5 stars 2, 610 ratings 4.4 out of 5 stars
customer reviews
4.2 4.2 out of 5 stars 225 ratings 4.2 out of 5 stars
customer reviews
4.3 4.3 out of 5 stars 5, 858 ratings 4.3 out of 5 stars

item dimensions l x w x h

14.7 x 10.2 x 2.6 Centimetres
item dimensions l x w x h
13.5 x 4.8 x 16.6 Centimetres
item dimensions l x w x h
10.2 x 14.5 x 2.6 Centimetres
item dimensions l x w x h
14.7 x 10.2 x 2.6 Centimetres
item dimensions l x w x h
26 x 147 x 102 millimeters
item dimensions l x w x h
48 x 170 x 140 millimeters

hard drive

18 TB Mechanical Hard Disk
hard drive
Mechanical Hard Disk
hard drive
16 TB Mechanical Hard Disk
hard drive
18 TB Mechanical Hard Disk
hard drive
18 TB Mechanical Hard Disk
hard drive
18 TB Desktop

color

Purple
color
Black
color
Black
color
Gold
color
Red
color
Black

flash memory size

18 TB
flash memory size
18 TB
flash memory size
-
flash memory size
18 TB
flash memory size
18 TB
flash memory size
18 TB

hard disk interface

Serial ATA
hard disk interface
-
hard disk interface
eSATA
hard disk interface
Serial ATA-600
hard disk interface
Serial ATA-600
hard disk interface
-

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
7200 RPM
hard drive rotational speed
-

hardware platform

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

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
  • 9.7
    1
    Western Digital

    Western Digital 18TB WD Purple Pro Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 512 MB Cache, 3.5" - WD181PURP

    8.4 worth the money
    Main highlights
    • Supports up to 550 TB/yr workload rate**.
    • High performance, reliability and workload capability for advanced AI-enabled recorders, video analytics appliances, deep-learning servers and cloud-based storage
    • Engineered with advanced capabilities needed for high-end smart video solutions
    • Designed with tarnish-resistant components for harsh environments, and with additional robustness for multi-bay enclosures
  • 9.6
    2
    WD
    10% Off

    WD 18TB Elements Desktop External Hard Drive, USB 3.0 External Hard Drive for Plug-and-Play Storage - WDBWLG0180HBK-NESN

    9.3 worth the money
    Main highlights
    • WD quality inside and out
    • Plug-and-play ready for Windows PCs
    • High-capacity add-on storage
    • Fast data transfers
    • 2-year manufacturer's limited warranty
  • 9.3
    3
    Seagate

    Seagate IronWolf Pro 16TB Enterprise NAS Internal HDD Hard Drive – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage, Rescue Services - FFP g (ST16000NTZ01)

    9.1 worth the money
    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
    • 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)

Our ranking system

The BestChoices.com 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. BestChoices.com 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

BestChoices.com 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.