18tb external hard drives comparison - August 2025

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Seagate Expansion Desktop 24TB, External Hard Drive, USB 3.0, Data Rescue Services (STKP24000400)

Seagate

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9,9

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WD 18TB Elements Desktop External Hard Drive - USB 3.0, Black

Western Digital

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9,8

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LaCie d2 Professional 18TB, External Hard Drive DeskTBp, for PC Mac & iPad, 1 Month Adobe CC, Data Rescue Service (STHA18000800)

LaCie

4% off

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9,6

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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

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9,6

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Toshiba 18TB Enterprise Internal Hard Drive – MG Series 3.5" SATA HDD for Server, Storage, 24/7 Operation, Hyperscale, Cloud (MG09ACA18TE)

Toshiba

12% off

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9,5

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SanDisk Professional G-DRIVE 24TB Desktop Hard Drive, up to 280MB/s

SanDisk Professional

3% off

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9,4

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SanDisk Extreme Portable SSD 4TB (up to 1050 MB/s read, 1,000MB/s write, USB-C, NVMe Solid State Performance, IP65 rated for dust and water resistance, Updated Firmware) Monterey

SanDisk

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9,3

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ModusTech External (DESKTOP) Hard Drive 14TB USB 3.0 & Type-C 3.0 - High-Speed Data Storage for PC, Mac, Laptops, and Gaming Consoles - Durable Design, Compatible with Windows, MacOS, Linux (14, TB)

ModusTech

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9,3

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G-Technology 18TB G-Drive USB-C (USB 3.1 Gen 1) Desktop External Hard Drive - 0G10826-1

G-Technology

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9,3

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iStorage diskAshur DT2 18 TB - Secure Encrypted Desktop Hard Drive - FIPS Level-2 - Password protected - Dust/Water Resistant

iStorage

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9,3

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Crucial X9 4TB Portable External SSD - Up to 1050MB/s, External Solid State Drive, Works with PlayStation, Xbox, PC and Mac, USB-C 3.2 - CT4000X9SSD902

Expand your storage Skip the monthly cloud storage fee and save more of the games, photos, videos and files you love with read speeds up to 1,050MB s. Load files up to 7.5x faster than portable hard drives and 100x faster than USB flash drives.

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Avolusion PRO-Z Series 18TB USB 3.0 External Hard Drive for WindowsOS Desktop PC/Laptop (White)

Built-in 18TB Capacity USB 3.0 External Hard Drive

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Yottamaster USB-C 4 Bay Hard Drive Enclosure with Daisy Chain, 10Gbps External HDD Enclosure for SATA 2.5"/3.5" Drive, Support 4x18TB & USB C Chain 2 More Enclosures-[FS4C3]

USB C Hard Drive Enclosure - 216TB Monster Capacity The 4 bay hard drive enclosure supports 4 hard drives with a maximum capacity of 72TB (4X18TB). Use the dual USB-C Gen2 (10Gbps) ports to daisy chain connect with two additional peripheral devices (except main device), which means the whole capacity could reach up to 216TB enterprise-class storage capacity.

~~£ 258.99~~ free shipping

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Samsung Portable SSD T5 EVO, 8 TB, USB 3.2 Gen. 1, 460 MB/s read, 460 MB/s write, External hard drive for Mac, PC, Android, Smart TVs and game consoles, Incl. USB-C cable, MU-PH8T0S/EU

Contents 1 x Samsung MU-PH8T0S EU Portable SSD T5 EVO, 8 TB, Incl. USB-C cable, Dimensions (W x D x H) 95 x 40 x 17 mm, Weight 102 g

~~£ 538.99~~ free shipping

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

Enjoy peace of mind with the included limited warranty and Rescue Data Recovery Services

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WD 16TB 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

Note This device should only be used with the compatible UL listed power supply

~~£ 406.99~~ free shipping

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UnionSine External Hard Drive 18TB 3.5" Desktop HDD USB3.0 Storage Compatible for PC, Mac, TV, Desktop, Laptop(Black)

System Compatibility Using USB-C 3.2 Gen2 type-C high-speed interface motherboard, compatible with TV Ps4 Xbox Windows Mac Linux DVD Android, 4K TV recording, multi-brand TV

~~£ 311.79~~ free shipping

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WD_BLACK D10 12TB Game Drive for Xbox, external HDD, transfer speeds up to 250 MB/s, 7200RPM, Active Cooling to Store your Massive Collection, 1 Month Xbox Game Pass, black

High-performance HDD in speeds up to 250MB s to optimise your console or PC gaming experience

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TERRAMASTER D6-320 External Hard Drive Enclosure - USB 3.2 Gen2 10Gbps Type-C HDD Storage Hot Swappable Plug and Play (6-bay USB3.2 (Gen2))

High Speed The D6-320 hard drive enclosure adopts USB 3.2 Gen2 protocol for high-speed data transmission up to 10Gbps. With 6 hard drives installed, the read write speed can reach up to 1,030MB s (SATA III HDD 8TB x 6). With one hard disk installed, the read speed can reach 510MB s (SATA III HDD 1TB SSD x 1).

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UGREEN NASync DXP2800 2-Bay Desktop NAS, Intel N100 Quad-core CPU, 8GB DDR5 RAM, 2.5GbE, 2 * M.2 NVMe Slots, 4K HDMI, Network Attached Storage (Diskless)

Spend Less, Store More Unlike costly cloud storage subscriptions, NAS only requires a one-time purchase with no ongoing fees, offering much better long-term value. Storing your data locally also provides far greater data security and gives you complete control.

~~£ 309.99~~ free shipping

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LaCie 1big Dock, 18TB, External Hard Drive, HDD Docking Station, for PC Mac iPad & iPhone, Data Rescue Service (STHS18000800)

1big Dock is an external hard drive and laptop docking station for filmmakers looking to centralise their desktop peripherals and store a massive portfolio of work with high-performance Thunderbolt 3 technology

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HGST - WD Ultrastar DC HC520 HDD | HUH721212ALE600 | 12TB 7.2K SATA 6Gb/s 256MB Cache 3.5" Internal Hard Drive with Helium Data Center (Refurbished)

Instant safe erase (ISE), endurance optimised with field-proven helium design

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18tb external hard drives in comparison

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18tb external hard drives in comparison

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