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

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

Updated 1 hour ago

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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
£1.04
Drives tracked
93
Prices updated
1 hour ago
Price per
93 UK products
ProductCapacityPrice£/TBTechPrime
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£25.99£1.04Tape · SASPrime
Quantum Data Cartridge LTO6 Ultrium Media 2.5/6,25tb25 TB£35.99£1.44Tape · SASPrime
HPE LTO-9 Ultrium 45TB RW Data Cartridge for P/N: R7E99A, R7F00A, R7F01A, R7F02A - Q2079A45 TB£94.17£2.09Tape · SAS-
IBM Ultrium LTO 9 Data Cartridge 18TB / 45TB [02XW568]45 TB£102.57£2.28Tape · SAS-
Quantum 3343204 Ultrium LTO 8 Data Cartridge 12TB Native / 30TB 2.5:1 Compression,Black30 TB£76.48£2.55Tape · SASPrime
TERRAMASTER D2-320 2Bay USB 3.2 Gen 2 RAID Storage - 10Gbps Type C - Supports RAID 0, 1, Single, JBOD22 TB£119.99£5.45HDD · USB-
QNAP TS-216G 2-Bay NAS, Quad-core CPU, 2.5GbE, 4GB RAM38.6 TB£249.00£6.45HDD · SATA-
AOOSTAR NAS computer 2Bay Mini PC Desktop Ryzen7 5825u Dual DDR4 RAM,2 SATA HDD + 2 M.2 NVME SSD Slots,Network Attached Storage TF Card slot (R7 NO RAM SSD)44 TB£309.00£7.02NVMe-
ZimaBoard 2 832 x86 Home Server Mini DIY NAS Personal Cloud Intel N150 4 Cores 8GB LPDDR5 RAM, PCIe 3.0, Dual 2.5G LAN, Barebone Network Attached Storage for Home/Office/Homelab/Docker/Firewall/Router36 TB£305.99£8.50NVMe-
AOOSTAR NAS Mini PC 4Bay SATA HDD Storage,Ryzen7 5825U Dual DDR4 RAM Two M.2 SSD Slots Desktop NASync Computer, 2 * 2.5GbE / 4k HDMI/TF Card port/TYPE-C Network Attached Storage (WTR PRO Barebone)22 TB£349.80£15.90SSD · USB-
Seagate Exos X24 24 TB Enterprise Internal Hard Drive HDD - 12 GB/s SAS 7,200 RPM 2.5M MTBF (ST24000NM002H)24 TB£416.57£17.36SASPrime
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, Black24 TB£457.43£19.06HDD · USBPrime
Seagate Exos 28TB internal server hard drive ST28000NM000C 3.5" HDD SATA 6Gb/s 7200RPM 512MB Cache (Renewed)28 TB£554.99£19.82HDD · SATA-
Seagate Exos 26TB Internal Hard Drive, 3.5 Inch HDD, SATA3, 256MB Cache (Renewed)26 TB£524.99£20.19HDD · SATA-
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, Black22 TB£449.94£20.45HDD · USBPrime
Seagate EXOS X24 24TB Interne Festplatte 3.5 Zoll SATA 3 Gbit/s 512 MB, ST24000NM000C (Renewed)24 TB£557.63£23.23HDD · SATAPrime
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, Black20 TB£486.50£24.33HDD · USB-
Seagate Exos 26TB Internal Hard Drive, 3.5 Inch HDD, SATA3, 256MB Cache26 TB£639.88£24.61HDD · SATA-
Seagate Exos X20 20TB Internal Hard Drive - 3.5 Inch Hyperscale SATA 6GB/s HDD, 7,200 RPM, 2.5M MTBF, 512e and 4Kn FastFormat, Low Latency with Enhanced Caching (ST20000NM007D)20 TB£493.35£24.67HDD · SATAPrime
Seagate Expansion 28TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP28000400)28 TB£700.99£25.04HDD · USBPrime
Seagate Expansion Desktop 24TB, External Hard Drive, USB 3.0, Data Rescue Services (STKP24000400)24 TB£619.00£25.79HDD · USBPrime
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, Black24 TB£626.99£26.12HDD · USBPrime
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, Black26 TB£707.99£27.23HDD · USBPrime
Seagate Expansion Desktop 20TB, External Hard Drive, USB 3.0, Data Rescue Services (STKP20000400)20 TB£548.00£27.40HDD · USB-
Seagate Expansion 22TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP22000400)22 TB£609.00£27.68HDD · USB-
Synology DS425+ 48TB (Synology HAT53) 4 bay desktop NAS48 TB£1,342.12£27.96HDD · SATAPrime
Seagate One Touch Hub 20TB, External Hard Drive Desktop HDD, USB-C & USB 3.0 port, for Computer Desktop Workstation PC Laptop Mac (STLC20000400)20 TB£580.63£29.03HDD · USBPrime
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, JBOD36 TB£1,044.99£29.03HDD · USBPrime
SanDisk Professional G-DRIVE 22TB Enterprise-Class Desktop Hard Drive, up to 280MB/s USB-C (5Gbps), USB 3.2 Gen 122 TB£643.56£29.25HDD · USBPrime
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, JBOD28 TB£847.99£30.29HDD · USBPrime
Western Digital WD 44TB My Book DuoDesktop RAID External Hard Drive USB 3.2 Gen 144 TB£1,334.99£30.34HDD · USBPrime
Oyen Digital Novus 24TB External USB-C Rugged 7200RPM Desktop Hard Drive24 TB£739.67£30.82HDD · USBPrime
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, JBOD24 TB£765.12£31.88HDD · USBPrime
Oyen Digital HDX Pro C 20TB USB-C 7200RPM Enterprise External Hard Drive20 TB£662.97£33.15HDD · USBPrime
WD Purple Pro 22TB Smart Video 3.5" Internal Hard Drive, AllFrame Technology, 550TB/yr, 512MB Cache, 7200 RPM, 5 Year Warranty22 TB£731.51£33.25HDD · SATA-
Seagate IronWolf Pro ST20000NE00 RV sensor 8.9 cm (3.5") NAS 20TB HDD (CMR)20 TB£675.00£33.75HDD · SATA-
Seagate IronWolf Pro, NAS Internal Hard Drive 20TB HDD, 3.5 Inch, 7200 rpm, CMR, 256 MB Cache, SATA 6GB/S, Silver, Model No.: ST20000NE00020 TB£675.00£33.75HDD · SATA-
Toshiba 20TB Enterprise Internal Hard Drive – MG Series 3.5" SATA HDD for Server, Storage, 24/7 Operation, Hyperscale, Cloud (MG10ACA20TE)20 TB£685.99£34.30HDD · SATA-
WD Purple Pro 24TB Smart Video 3.5" Internal Hard Drive, AllFrame AI Technology, 7200 RPM, SATA 6 GB/s, 550TB/yr, 512MB Cache24 TB£825.50£34.40HDD · SATA-
WD Red Pro 20TB NAS 3.5" Internal Hard Drive - 7200 RPM, SATA 6 Gb/s, CMR, 512MB Cache20 TB£688.99£34.45HDD · SATAPrime
WD Red Pro 24TB NAS 3.5" Internal Hard Drive - 7200 RPM, SATA 6 Gb/s, CMR, 512MB Cache24 TB£826.99£34.46HDD · SATAPrime
LaCie d2 Professional 24TB, Externe Harde Schijf, voor PC Mac & iPad, maand Adobe CC All Apps, Data Rescue Service (STHA24000800)24 TB£826.99£34.46HDD · SATAPrime
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)20 TB£690.00£34.50HDD · SATA-
WD Red Pro 26TB NAS 3.5" Internal Hard Drive - 7200 RPM, SATA 6 Gb/s, CMR, 512MB Cache26 TB£911.79£35.07HDD · SATA-
Seagate Barracuda 20TB Internal Hard Drive, 7200 U/Min, 512MB Cache, SATA 6Gb/s, 3.5" (ST20000DM001)20 TB£712.56£35.63HDD · SATA-
Seagate IronWolf Pro 24TB, NAS Internal Hard Drive, 3.5 Inch, 7.200 U/Min, CMR, 256MB Cache, SATA 6 GB/S, incl. Datat Rescue Service (ST24000NTZ02)24 TB£878.99£36.62HDD · SATAPrime
WD Gold 20TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 512MB Cache 3.5 Inch20 TB£744.00£37.20HDD · SATA-
Seagate IronWolf Pro 32TB, NAS internal hard drive, 3.5", 7200 U/Min, CMR, 512 MB Cache, SATA 6 GB/S, Data Rescue Service (ST32000NT00)32 TB£1,220.00£38.13HDD · SATA-
WD Red Pro 20TB NAS 3.5" Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, CMR Recording Technology, 512MB Cache20 TB£779.99£39.00HDD · SATA-
WD 24TB My Book Desktop External Hard Drive, with Password Protection and Backup Software, USB 3.2 Gen1, exFAT - WDBBGB0240HBK-NESN24 TB£937.66£39.07HDD · USBPrime
Synology DS223 2-Bay Diskstation NAS (Realtek RTD1619B Quad-Core 2GB Ram 1xRJ-45 1GbE LAN Port) 24TB Bundle with 2 x 12TB Seagate IronWolf NAS HDDs24 TB£977.96£40.75HDD · SATAPrime
LaCie 2big RAID, 36TB, External Hard Drive Desktop, USB-C, 7.200 RPM, Enterprise Class Drives, for Mac and PC Desktop, 5 year Rescue Services (STHJ36000800)36 TB£1,467.64£40.77HDD · USB-
LaCie d2 Professional 20TB — USB‑C Desktop External Hard Drive, for Mac & Windows — Rescue Data Recovery included20 TB£840.20£42.01HDD · USB-
WD 24TB My Cloud EX2 Ultra 2-bay NAS - Network Attached Storage RAID, File Sync, Streaming, Media Server, with WD Red Drives24 TB£1,024.00£42.67HDD · SATA-
Seagate Exos X22 22TB 3.5p22 TB£961.89£43.72HDD · SATA-
Seagate 8.9 cm (3.5") 32TB SATA3 IronWolf Pro 7200 512MB32 TB£1,411.26£44.10HDD · SATA-
Synology DS223j 32TB 2 Bay NAS Solution installed with 2 x 16 HAT3300 Drives32 TB£1,418.99£44.34HDD · SATA-
Seagate Exos X24 ST20000NM007H - 20TB20 TB£897.56£44.88HDD · SATA-
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 read26 TB£1,255.35£48.28SSD · ThunderboltPrime
Western Digital 24TB WD Gold Enterprise Class SATA Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD242KRYZ24 TB£1,172.87£48.87HDD · SATA-
Western Digital 26TB WD Gold Enterprise Class SATA Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD261KRYZ26 TB£1,287.49£49.52HDD · SATA-
Synology DS223 20TB 2 Bay Desktop NAS Solution installed with 2 x 10TB Western Digital Red Plus Drives20 TB£998.98£49.95HDD · SATA-
Synology DS223J 20TB 2 Bay NAS Solution installed with 2 x 10TB Western Digital Red Plus Drives20 TB£999.00£49.95HDD · SATA-
SIMPLETEK - Enterprise Hard Disk 24TB - 3.5" SATA - 7200 RPM - 512MB Cache - Helium Technology - Model ST24000NM002H24 TB£1,225.32£51.06HDD · SATA-
Western Digital 3.5IN 26.1 24TB 512 7200RPM INT24 TB£1,232.08£51.34HDD · SATA-
Synology - HAT5320-24T Enterprise HAT5300 HAT5320-24T 24 TB Hard Drive - 3.5 Internal - SATA (SATA/600) -24 TB£1,258.00£52.42HDD · SATA-
Synology Enterprise HAT5320-24T HDD 24TB SATA 3.5" Hard Drive24 TB£1,263.23£52.63HDD · SATA-
Synology DX517 50 TB 5 Bay Expansion Solution | Installed with 5 x 10 TB Seagate IronWolf Drives50 TB£2,647.99£52.96HDD · SATA-
Synology Enterprise internal hard drive 20 TB 7200 RPM 512 MB 3.5" Serial ATA III20 TB£1,059.97£53.00HDD · SATAPrime
Apricorn 22TB Aegis Padlock DT 256-Bit Encrypted USB 3.0 Hard Drive (ADT-3PL256-22TB)22 TB£1,167.95£53.09HDD · USBPrime
Apricorn Aegis Desktop Padlock 22 TB FIPS 140-2 Validated 256-Bit Encrypted Hard Drive (ADT-3PL256F-22TB)22 TB£1,171.57£53.25HDD · SATAPrime
Synology DS223J 20TB 2 Bay NAS Solution installed with 2 x 10TB Seagate Ironwolf Drives20 TB£1,079.99£54.00HDD · SATA-
Synology DS223 24TB 2 Bay Desktop NAS Solution installed with 2 x 12TB Western Digital Red Plus Drives24 TB£1,299.00£54.13HDD · SATA-
Synology DS725+ 40TB (Synology HAT53) 2 bay Plus series with Ryzen R1600, 4GB Ram (32GB max), 1x 2.5GbE, 1x 1GbE, 2x M.2 NVMe slots. DX525 expansion available via Type-C.40 TB£2,213.92£55.35NVMePrime
iStorage diskAshur DT3 256-bit 24TB - FIPS Level 3 Certified - Secure encrypted Desktop Hard Drive - Password Protected24 TB£1,365.72£56.91HDD · SATA-
iStorage diskAshur DT2 24 TB - Secure Encrypted Desktop Hard Drive - FIPS Level-2 - Password protected - Dust/Water Resistant24 TB£1,365.72£56.91HDD · SATA-
iStorage diskAshur DT3 HDD 256-bit 26TB - FIPS 140-3 Level 3 Certified - Secure encrypted Desktop Hard Drive - Password Protected26 TB£1,528.74£58.80HDD · SATA-
iStorage diskAshur DT2 26 TB - Secure Encrypted Desktop Hard Drive - FIPS Level-2 - Password protected - Dust/Water Resistant26 TB£1,528.74£58.80HDD · SATA-
iStorage diskAshur DT2 256-bit 26TB | FIPS Level 3 Certified | Secure encrypted Desktop Hard Drive | Password Protected26 TB£1,528.74£58.80HDD · SATA-
Western Digital Ultrastar DC HC590 24TB Data Center Hard Drive, SAS 12Gb/s, 7200 RPM, 512MB Cache, 3.5-inch24 TB£1,456.39£60.68SAS-
iStorage diskAshur DT2 22 TB - Secure Encrypted Desktop Hard Drive - FIPS Level-2 - Password protected - Dust/Water Resistant22 TB£1,337.20£60.78HDD · SATA-
iStorage diskAshur DT2 256-bit 22TB | FIPS Level 3 Certified | Secure encrypted Desktop Hard Drive | Password Protected22 TB£1,337.20£60.78HDD · SATA-
iStorage diskAshur DT3 256-bit 22TB - FIPS Level 3 Certified - Secure encrypted Desktop Hard Drive - Password Protected22 TB£1,337.22£60.78HDD · SATA-
Synology DS725+ 32TB (Synology HAT33) 2 bay Plus series with Ryzen R1600, 4GB Ram (32GB max), 1x 2.5GbE, 1x 1GbE, 2x M.2 NVMe slots. DX525 expansion available via Type-C.32 TB£1,953.99£61.06NVMe-
Synology DS225+ 24TB (Seagate Ironwolf 2x12TB) 2-Bay Plus Series - Intel Celeron J4125 Quad-Core, 2GB Non-ECC DDR4 SODIMM 1x2.5GbE and 1x1GbE RJ-45 LAN Port24 TB£1,511.92£63.00HDD · SATAPrime
iStorage diskAshur DT3 256-bit 20TB - FIPS Level 3 Certified - Secure encrypted Desktop Hard Drive - Password Protected20 TB£1,309.84£65.49HDD · SATA-
Western Digital 20TB My Book Duo Desktop RAID External Hard Drive HDD, USB 3.1, With Password Protection and Auto Backup Software - WDBFBE0200JBK-NESN20 TB£1,392.11£69.61HDD · USB-
Synology DX517 20 TB 5 Bay Expansion Solution | Installed with 5 x 4 TB Seagate IronWolf Drives20 TB£1,429.88£71.49HDD · SATA-
Synology DS423 48TB 4 Bay Desktop NAS Solution installed with 4 x 12TB HAT5300 Drives48 TB£3,476.37£72.42HDD · SATA-
QNAP TS-253E-8G/20TB 2 Bay Desktop NAS Unit with Seagate IronWolf Drives20 TB£1,496.88£74.84HDD · SATA-
Synology DS1825+ 48TB (Synology HAT33) 8 bay Plus series with Ryzen V1500B, 8GB Ram (32GB max), 2x 2.5GbE, 2x M.2 NVMe slots. PCIe slot for NIC options.48 TB£3,978.00£82.88NVMe-
Synology DS423 32TB 4 Bay Desktop NAS Solution installed with 4 x 8TB HAT5300 Drives32 TB£2,963.30£92.60HDD · SATA-
BUFFALO TeraStation 5820DN 64TB (8x8TB) Computer NAS 10GbE HDD with NAS Hard Drive 8 Bay RAID, iSCSI, NAS, Storage Server, NAS Server, NAS Storage, Network Storage, File Server64 TB£7,698.44£120.29HDD · SATA-

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 2026-06-22 06:50:13 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.