Highest Capacity Hard Drives in the UK (20TB+)

HDD · SSD · NVMe · NAS · SAS · tape, all on Amazon.co.uk

Updated 1 hour ago

As an Amazon Associate we earn from qualifying purchases. Prices and availability shown are from Amazon.co.uk at the last update and may change.

When you need maximum storage in a single bay, the largest drives win on both density and, often, price per terabyte. This page gathers every drive we track at 20TB and above on Amazon.co.uk and ranks them by price per terabyte, so NAS builders, archivists and surveillance setups can see where the real value sits. UK prices refresh through the day. The leaders here are usually Seagate IronWolf Pro and Exos, WD Red Pro and Ultrastar, and Toshiba MG, all built for sustained use. Filter by brand to match your array, then check the Prime column before you buy.

Cheapest £/TB in this segment

£1.93

Drives tracked

Prices updated

1 hour ago

TypeForm factorInterfaceMin capacityConditionBrand

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94 UK products

Product	Capacity	Price	£/TB	Tech	Prime	Buy
Quantum 3343204 Ultrium LTO 8 Data Cartridge 12TB Native / 30TB 2.5:1 Compression,Black	30 TB	£57.98	£1.93	Tape · SAS	Prime	Buy on Amazon
IBM Ultrium LTO 9 Data Cartridge 18TB / 45TB [02XW568]	45 TB	£103.00	£2.29	Tape · SAS	-	Buy on Amazon
IBM 00V7590 Media Tape LTO6 2.5/6.25 TB New Retail LTO Ultrium 6 Data Cartridge 25/625 TB - (Consumables > Data Cartridges)	25 TB	£57.38	£2.30	Tape · SAS	-	Buy on Amazon
Fuji Ultrium 8 12TB/30TB	30 TB	£69.00	£2.30	Tape · SAS	-	Buy on Amazon
HPE LTO-8 ULTRIUM 30TB RW DATA CARTRIDGE	30 TB	£79.02	£2.63	Tape · SAS	-	Buy on Amazon
Asustor Expanstor 4 AS5004U, 4 Bay Expansion Unit USB 3.2 Gen 2 Type C	22 TB	£312.00	£14.18	HDD · USB	-	Buy on Amazon
Western Digital WD Red Pro NAS Hard Disk Drive	22 TB	£346.05	£15.73	HDD · SATA	Prime	Buy on Amazon
Seagate Exos 28TB internal server hard drive ST28000NM000C 3.5" HDD SATA 6Gb/s 7200RPM 512MB Cache (Renewed)	28 TB	£635.86	£22.71	HDD · SATA	-	Buy on Amazon
Seagate Exos 26TB Internal Hard Drive, 3.5 Inch HDD, SATA3, 256MB Cache	26 TB	£599.00	£23.04	HDD · SATA	-	Buy on Amazon
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	22 TB	£522.78	£23.76	HDD · USB	Prime	Buy on Amazon
Seagate 24TB One Touch Desktop Hard Drive \| USB-C (STNB24000400) \| Bus-powered HDD. Single cable. Requires 15W USB-C power. PC & Mac. Adobe CC & Mylio trial. 2-Year Warranty + 2-Year Rescue	24 TB	£589.99	£24.58	HDD · USB	Prime	Buy on Amazon
Seagate Exos 24TB Internal Server Hard Drive ST24000NM000C 3.5 Inch HDD SATA 6Gb/s 7200RPM 512MB (Factory Recertified)	24 TB	£596.60	£24.86	HDD · SATA	-	Buy on Amazon
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	20 TB	£504.98	£25.25	HDD · USB	Prime	Buy on Amazon
WD 24TB My Book external hard drive, Desktop HDD with Password Protection, USB 3.0, SuperSpeed USB, software for device management, backup, hardware encryption, works with PC and Mac, Black	24 TB	£619.99	£25.83	HDD · USB	Prime	Buy on Amazon
Seagate 20TB One Touch Desktop Hard Drive \| USB-C (STNB20000400)	20 TB	£516.99	£25.85	HDD · USB	Prime	Buy on Amazon
Seagate Exos X22 22TB Internal Server Festplatte ST22000NM000C 3.5 Zoll HDD SATA 6Gb/s 512E SED 7200RPM 512MB Cache (Refurbished)	22 TB	£571.00	£25.95	HDD · SATA	-	Buy on Amazon
Seagate EXOS X24 24TB Interne Festplatte 3.5 Zoll SATA 3 Gbit/s 512 MB, ST24000NM000C (Renewed)	24 TB	£631.15	£26.30	HDD · SATA	Prime	Buy on Amazon
Seagate Technology Exos X20, 20TB, 3.5-Inch SATA Hard Drive at 6GB/s, 7,200 RPM, 512e and 4Kn FastFormat, Low Latency with Enhanced Cache (ST20000NM007D), Green (Renewed)	20 TB	£536.86	£26.84	HDD · SATA	-	Buy on Amazon
WD 26TB Elements External Desktop Hard Drive, USB 3.1 Gen 1, Fast transfer rates, Easy add on storage for all your pictures, videos, music and documents, Black	26 TB	£703.99	£27.08	HDD · USB	Prime	Buy on Amazon
WD 22TB My Book external hard drive, Desktop HDD with Password Protection, USB 3.0, SuperSpeed USB, software for device management, backup, hardware encryption, works with PC and Mac, Black	22 TB	£609.00	£27.68	HDD · USB	-	Buy on Amazon
WD 24TB Elements External Desktop Hard Drive, USB 3.1 Gen 1, Fast transfer rates, Easy add on storage for all your pictures, videos, music and documents, Black	24 TB	£692.21	£28.84	HDD · USB	-	Buy on Amazon
Seagate 26TB Expansion Desktop Hard Drive \| USB 3.0 (STKP26000400)	26 TB	£749.99	£28.85	HDD · USB	-	Buy on Amazon
Seagate 20TB Expansion Desktop Hard Drive \| USB 3.0 (STKP20000400)	20 TB	£590.00	£29.50	HDD · USB	-	Buy on Amazon
Seagate Barracuda 24TB Internal Hard Drive, 7200 U/Min, 512MB Cache, SATA 6Gb/s, 3.5" (ST24000DM001)	24 TB	£749.99	£31.25	HDD · SATA	-	Buy on Amazon
Seagate 24TB Expansion Desktop Hard Drive \| MicroB to USB-C (STNP24000400)	24 TB	£751.99	£31.33	HDD · USB	Prime	Buy on Amazon
Seagate 24TB Expansion Desktop Hard Drive \| USB 3.0 (STKP24000400)	24 TB	£755.00	£31.46	HDD · USB	-	Buy on Amazon
Western Digital WD 44TB My Book DuoDesktop RAID External Hard Drive USB 3.2 Gen 1	44 TB	£1,399.99	£31.82	HDD · USB	Prime	Buy on Amazon
G-DRIVE 22TB Hard disk desktop di classe enterprise, fino a 280 MB/s, USB-C	22 TB	£704.99	£32.05	HDD · USB	Prime	Buy on Amazon
WD 36TB My Book Duo Desktop HDD USB 3.1 Gen 1 with software for device management, backup and password protection USB-C and USB-A cables RAID 0/1, JBOD	36 TB	£1,187.99	£33.00	HDD · USB	Prime	Buy on Amazon
Seagate Expansion 22TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP22000400)	22 TB	£736.73	£33.49	HDD · USB	-	Buy on Amazon
WD 28TB My Book Duo Desktop HDD USB 3.1 Gen 1 with software for device management, backup and password protection USB-C and USB-A cables RAID 0/1, JBOD	28 TB	£956.99	£34.18	HDD · USB	Prime	Buy on Amazon
Toshiba MG10SFA22TE 22TB Enterprise Internal Hard Drive, 3.5-Inch SAS 12Gb/s, 7200 RPM, 512MB Cache, CMR, 24/7 Operation	22 TB	£759.47	£34.52	SAS	-	Buy on Amazon
Toshiba X300 20TB Performance & Gaming 3.5" Internal Hard Drive - CMR SATA 6GB/s 7200RPM 512MB Cache - HDWR62AXZSTA	20 TB	£692.11	£34.61	HDD · SATA	Prime	Buy on Amazon
Toshiba 22TB Enterprise SAS Internal Hard Drive, 3.5", 12Gb/s, 7200RPM, MG10SFA22TE	22 TB	£779.99	£35.45	SAS	-	Buy on Amazon
Seagate IronWolf Pro, NAS Internal Hard Drive 20TB HDD, 3.5 Inch, 7200 rpm, CMR, 256 MB Cache, SATA 6GB/S, Silver, Model No.: ST20000NE000	20 TB	£715.00	£35.75	HDD · SATA	-	Buy on Amazon
WD 24TB My Book Duo Desktop HDD USB 3.1 Gen 1 with software for device management, backup and password protection USB-C and USB-A cables RAID 0/1, JBOD	24 TB	£862.99	£35.96	HDD · USB	Prime	Buy on Amazon
Toshiba 3.5" 22TB SATA3 Enterprise Capacity 7200RPM Internal Hard Drive	22 TB	£795.00	£36.14	HDD · SATA	-	Buy on Amazon
Seagate IronWolf Pro ST20000NE00 RV sensor 8.9 cm (3.5") NAS 20TB HDD (CMR)	20 TB	£735.00	£36.75	HDD · SATA	-	Buy on Amazon
Seagate 20TB IronWolf Pro Internal NAS Hard Drive \| SATA (ST20000NTZ01) \| 7200 RPM. Professional NAS HDD. 24/7 performance, AgileArray, All-CMR, 550TB/year, health monitoring.	20 TB	£785.47	£39.27	HDD · SATA	-	Buy on Amazon
Seagate 24TB IronWolf Pro Internal NAS Hard Drive \| SATA (ST24000NTZ02)	24 TB	£950.04	£39.59	HDD · SATA	-	Buy on Amazon
Seagate 30TB IronWolf Pro Internal NAS Hard Drive \| SATA (ST30000NTZ11)	30 TB	£1,190.04	£39.67	HDD · SATA	-	Buy on Amazon
Seagate 28TB IronWolf Pro Internal NAS Hard Drive \| SATA (ST28000NTZ00) \| 7200 RPM. Professional NAS HDD. 24/7 performance, AgileArray, All-CMR, 550TB/year, health monitoring.	28 TB	£1,124.75	£40.17	HDD · SATA	Prime	Buy on Amazon
Synology - HAT5320-24T Enterprise HAT5300 HAT5320-24T 24 TB Hard Drive - 3.5 Internal - SATA (SATA/600) -	24 TB	£980.00	£40.83	HDD · SATA	-	Buy on Amazon
Synology Enterprise HAT5320-24T HDD 24TB SATA 3.5" Hard Drive	24 TB	£1,000.00	£41.67	HDD · SATA	-	Buy on Amazon
WD Purple Pro 26TB Smart Video 3.5" Internal Hard Drive, AllFrame AI Technology, 7200 RPM, SATA 6 GB/s, 550TB/yr, 512MB Cache	26 TB	£1,102.99	£42.42	HDD · SATA	Prime	Buy on Amazon
Seagate IronWolf SATA III 3.5" Internal NAS Hard Drive - 12TB, 2-Pack	24 TB	£1,019.00	£42.46	HDD · SATA	-	Buy on Amazon
WD Red Pro 22TB NAS 3.5" Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, CMR Recording Technology, 512MB Cache	22 TB	£954.75	£43.40	HDD · SATA	-	Buy on Amazon
WD Purple Pro 24TB Smart Video 3.5" Internal Hard Drive, AllFrame AI Technology, 7200 RPM, SATA 6 GB/s, 550TB/yr, 512MB Cache	24 TB	£1,043.13	£43.46	HDD · SATA	-	Buy on Amazon
WD Red Pro 26TB NAS 3.5" Internal Hard Drive - 7200 RPM, SATA 6 Gb/s, CMR, 512MB Cache	26 TB	£1,143.60	£43.98	HDD · SATA	-	Buy on Amazon
G-DRIVE Project 26TB, with PRO-BLADE SSD Mag Slot, Thunderbolt 3 (40Gbps), USB 3.2 Gen 2 (10Gbps), 7200RPM Enterprise Class Hard Drive, Up to 260MB/s read	26 TB	£1,153.99	£44.38	SSD · Thunderbolt	Prime	Buy on Amazon
Synology DS223j 32TB 2 Bay NAS Solution installed with 2 x 16 HAT3300 Drives	32 TB	£1,444.00	£45.13	HDD · SATA	-	Buy on Amazon
Synology DS425+ 48TB (Synology HAT53) 4 bay desktop NAS	48 TB	£2,173.16	£45.27	HDD · SATA	Prime	Buy on Amazon
Seagate SkyHawk AI ST32000VE00 32TB 7200RPM 512MB 3.5" SATA Hard Drive	32 TB	£1,473.36	£46.04	HDD · SATA	-	Buy on Amazon
WD Purple Pro 24TB Smart Video 3.5" Internal Hard Drive, AllFrame AI Technology, 7200 RPM, SATA 6 GB/s, 550TB/yr, 512MB Cache	24 TB	£1,123.78	£46.82	HDD · SATA	-	Buy on Amazon
LaCie d2 Professional 24TB, Externe Harde Schijf, voor PC Mac & iPad, maand Adobe CC All Apps, Data Rescue Service (STHA24000800)	24 TB	£1,133.40	£47.23	HDD · SATA	-	Buy on Amazon
WD Red Pro 20TB NAS 3.5" Internal Hard Drive - 7200 RPM, SATA 6 Gb/s, CMR, 512MB Cache	20 TB	£949.53	£47.48	HDD · SATA	-	Buy on Amazon
LaCie 20TB d2 Professional \| USB-C (STHA20000800)	20 TB	£963.77	£48.19	HDD · USB	-	Buy on Amazon
Synology Enterprise internal hard drive 20 TB 7200 RPM 512 MB 3.5" Serial ATA III	20 TB	£998.88	£49.94	HDD · SATA	Prime	Buy on Amazon
WD Red Pro 20TB NAS 3.5" Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, CMR Recording Technology, 512MB Cache	20 TB	£999.00	£49.95	HDD · SATA	-	Buy on Amazon
Synology DS223J 20TB 2 Bay NAS Solution installed with 2 x 10TB Western Digital Red Plus Drives	20 TB	£999.00	£49.95	HDD · SATA	-	Buy on Amazon
WD 26TB My Book Desktop External Hard Drive, USB 3.0, External HDD with Password Protection and Auto Backup Software - WDBBGB0260HBK-NESN	26 TB	£1,345.21	£51.74	HDD · USB	Prime	Buy on Amazon
WD 24TB My Book Desktop External Hard Drive, with Password Protection and Backup Software, USB 3.2 Gen1, exFAT - WDBBGB0240HBK-NESN	24 TB	£1,244.62	£51.86	HDD · USB	Prime	Buy on Amazon
Synology DS223 24TB 2 Bay Desktop NAS Solution installed with 2 x 12TB Western Digital Red Plus Drives	24 TB	£1,253.99	£52.25	HDD · SATA	-	Buy on Amazon
Synology DX517 50 TB 5 Bay Expansion Solution \| Installed with 5 x 10 TB Seagate IronWolf Drives	50 TB	£2,647.99	£52.96	HDD · SATA	-	Buy on Amazon
LaCie 20TB 1big Dock \| Thunderbolt 3 (STHS20000800) \| Desktop HDD for creative workflows, CF/SD readers, 60W charging. Adobe CC trial included. 5-Year Warranty + 5-Year Rescue	20 TB	£1,060.56	£53.03	HDD · Thunderbolt	-	Buy on Amazon
Synology DS223J 20TB 2 Bay NAS Solution installed with 2 x 10TB Seagate Ironwolf Drives	20 TB	£1,079.99	£54.00	HDD · SATA	-	Buy on Amazon
Synology DS223 32TB 2 Bay NAS Solution installed with 2 x 16 HAT3300 Drives	32 TB	£1,731.89	£54.12	HDD · SATA	-	Buy on Amazon
Synology DS223 20TB 2 Bay Desktop NAS Solution installed with 2 x 10TB Western Digital Red Plus Drives	20 TB	£1,097.99	£54.90	HDD · SATA	-	Buy on Amazon
Apricorn Aegis Desktop Padlock 22 TB FIPS 140-2 Validated 256-Bit Encrypted Hard Drive (ADT-3PL256F-22TB)	22 TB	£1,251.41	£56.88	HDD · SATA	Prime	Buy on Amazon
Synology DS223 20TB 2 Bay Desktop NAS Solution installed with 2 x 10TB Seagate Ironwolf Drives	20 TB	£1,137.99	£56.90	HDD · SATA	-	Buy on Amazon
Synology HAS5310-20T HDD with 20TB	20 TB	£1,140.83	£57.04	HDD · SATA	-	Buy on Amazon
iStorage diskAshur DT3 256-bit 24TB - FIPS Level 3 Certified - Secure encrypted Desktop Hard Drive - Password Protected	24 TB	£1,419.97	£59.17	HDD · SATA	-	Buy on Amazon
iStorage diskAshur DT2 24 TB - Secure Encrypted Desktop Hard Drive - FIPS Level-2 - Password protected - Dust/Water Resistant	24 TB	£1,430.68	£59.61	HDD · SATA	-	Buy on Amazon
iStorage diskAshur DT3 HDD 256-bit 26TB - FIPS 140-3 Level 3 Certified - Secure encrypted Desktop Hard Drive - Password Protected	26 TB	£1,593.72	£61.30	HDD · SATA	-	Buy on Amazon
iStorage diskAshur DT2 26 TB - Secure Encrypted Desktop Hard Drive - FIPS Level-2 - Password protected - Dust/Water Resistant	26 TB	£1,593.72	£61.30	HDD · SATA	-	Buy on Amazon
iStorage diskAshur DT2 256-bit 26TB \| FIPS Level 3 Certified \| Secure encrypted Desktop Hard Drive \| Password Protected	26 TB	£1,593.72	£61.30	HDD · SATA	-	Buy on Amazon
Western Digital 22TB Ultrastar DC HC570 SAS SE Enterprise HDD	22 TB	£1,355.00	£61.59	SAS	-	Buy on Amazon
iStorage diskAshur DT3 256-bit 22TB - FIPS Level 3 Certified - Secure encrypted Desktop Hard Drive - Password Protected	22 TB	£1,367.97	£62.18	HDD · SATA	-	Buy on Amazon
iStorage diskAshur DT2 22 TB - Secure Encrypted Desktop Hard Drive - FIPS Level-2 - Password protected - Dust/Water Resistant	22 TB	£1,371.40	£62.34	HDD · SATA	-	Buy on Amazon
iStorage diskAshur DT2 256-bit 22TB \| FIPS Level 3 Certified \| Secure encrypted Desktop Hard Drive \| Password Protected	22 TB	£1,371.40	£62.34	HDD · SATA	-	Buy on Amazon
Apricorn 22TB Aegis Padlock DT 256-Bit Encrypted USB 3.0 Hard Drive (ADT-3PL256-22TB)	22 TB	£1,429.35	£64.97	HDD · USB	Prime	Buy on Amazon
Western Digital 20TB WD Ultrastar DH HC560 7200RPM 512MB Ent,	20 TB	£1,309.06	£65.45	HDD · SATA	-	Buy on Amazon
iStorage diskAshur DT3 256-bit 20TB - FIPS Level 3 Certified - Secure encrypted Desktop Hard Drive - Password Protected	20 TB	£1,321.38	£66.07	HDD · SATA	-	Buy on Amazon
Western Digital 24TB WD Gold Enterprise Class SATA Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD242KRYZ	24 TB	£1,642.92	£68.46	HDD · SATA	-	Buy on Amazon
iStorage diskAshur DT2 30 TB - Secure Encrypted Desktop Hard Drive - FIPS Level-2 - Password protected - Dust/Water Resistant	30 TB	£2,086.20	£69.54	HDD · SATA	-	Buy on Amazon
LaCie 2big Dock RAID, 20TB, externe HDD, for PC Mac iPad & iPhone, Data Rescue Service (STLG20000400)	20 TB	£1,391.49	£69.57	HDD · SATA	-	Buy on Amazon
WD 28TB External Hard Drive My Book Duo Desktop RAID, USB 3.1, with Password Protection and Auto Backup Software - WDBFBE0280JBK-NESN	28 TB	£1,988.92	£71.03	HDD · USB	-	Buy on Amazon
Synology DX517 20 TB 5 Bay Expansion Solution \| Installed with 5 x 4 TB Seagate IronWolf Drives	20 TB	£1,429.88	£71.49	HDD · SATA	-	Buy on Amazon
Synology DS423 48TB 4 Bay Desktop NAS Solution installed with 4 x 12TB HAT5300 Drives	48 TB	£3,476.37	£72.42	HDD · SATA	-	Buy on Amazon
WD 20TB 0F38785 SE Ultrastar 7200 SA3	20 TB	£1,452.75	£72.64	HDD · SATA	-	Buy on Amazon
QNAP TS-253E-8G/20TB 2 Bay Desktop NAS Unit with Seagate IronWolf Drives	20 TB	£1,496.88	£74.84	HDD · SATA	-	Buy on Amazon
Seagate Technology Exos X20, 20TB, 3.5-Inch SATA Hard Drive at 6GB/s, 7,200 RPM, 2.5M MTBF, 512e and 4Kn FastFormat, Low Latency with Enhanced Cache (ST20000NM007D), Green	20 TB	£1,618.22	£80.91	HDD · SATA	-	Buy on Amazon
Western Digital 20TB My Book Duo Desktop RAID External Hard Drive HDD, USB 3.1, With Password Protection and Auto Backup Software - WDBFBE0200JBK-NESN	20 TB	£1,766.30	£88.32	HDD · USB	-	Buy on Amazon
Synology DS423 32TB 4 Bay Desktop NAS Solution installed with 4 x 8TB HAT5300 Drives	32 TB	£2,963.30	£92.60	HDD · SATA	-	Buy on Amazon

Frequently asked questions

What is the cheapest price per TB for a 20TB+ drive in the UK?

The table is sorted by price per terabyte, so the best value 20TB or larger drive on Amazon.co.uk sits at the top and updates through the day.

What is the largest capacity hard drive you can buy in the UK?

Mainstream drives now reach 26TB to 28TB, with 20TB to 24TB the sweet spot for value. The table shows the live options ranked by price per TB.

Are very high capacity drives good value per TB?

Often yes. The newest high capacity HDDs frequently match or beat smaller drives on price per terabyte, which is why they suit large NAS builds.

Last updated at 2026-10-17 18:03:00 UTC. As an Amazon Associate I earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed at the time of purchase will apply to the purchase of the product. CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON SERVICES LLC.