Internal Hard Drives (HDD)

Computer Storage

2.5 Inch Hard Drives (HDD)

3.5 Inch Hard Drives (HDD)

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45 Items found

WD 6TB Red Pro 7200rpm HDD 256MB Cache Internal NAS Hard Drive (WD6005FFBX)

STO-WDC-08131

Designed for NAS Systems, 6TB Capacity, 3.5’’ Form Factor, 7200 RPM, 256MB Cache, SATA III Connectivity, Max Data Transfer Rate of 238MB/s

£259.99 (incl. VAT)

In stock

Seagate 20TB Barracuda HDD 7200RPM 512MB Cache Internal Hard Drive (ST20000DM001)

STO-SEA-07462

Internal hard drive, 20TB capacity, 3.5’’ form factor, SATA III connectivity, 7200 RPM, 512MB internal cache

£619.99 (incl. VAT)

In stock

WD 8TB Red Pro 7200rpm HDD 256MB Cache Internal NAS Hard Drive (WD8005FFBX)

STO-WDC-04054

Designed for NAS Systems, 8TB Capacity, 3.5’’ Form Factor, 7200 RPM, 256MB Cache, SATA III Connectivity, Max Data Transfer Rate of 235MB/s

£299.99 (incl. VAT)

In stock

WD 4TB Red Pro 7200rpm HDD 256MB Cache Internal NAS Hard Drive (WD4003FFBX)

STO-WDC-03888

Designed for NAS Systems, 4TB Capacity, 3.5’’ Form Factor, 7200 RPM, 256MB Cache, SATA III Connectivity, Max Data Transfer Rate of 217MB/s

£229.99 (incl. VAT)

In stock

Seagate 24TB Barracuda HDD 7200RPM 512MB Cache Internal Hard Drive ST20000DM001

STO-SEA-07499

Internal hard drive, 24TB capacity, 3.5’’ form factor, SATA III connectivity, 7200 RPM, 512MB internal cache

£589.99 (incl. VAT)

In stock

Seagate 1TB Barracuda HDD 5400RPM 2.5" Internal Hard Drive (ST1000LM048)

HD-379-SE

(1)

Internal hard drive, 1TB capacity, 2.5’’ form factor, 5400 RPM, SATA III connectivity, Max data transfer rate of 140MB/s, 128MB cache

£72.95 (incl. VAT)

In stock

Save 9%

Seagate 6TB SkyHawk HDD 256MB Cache Surveillance Internal CCTV Hard Drive

STO-SEA-00574

Internal hard drive, Designed for surveillance systems, 6TB capacity, 3.5’’ form factor, SATA III Connectivity, Up to 6Gb/s data transfer speeds, 256MB internal cache

£229.99 £209.99 (incl. VAT)

In stock

Seagate 4TB IronWolf NAS 5400RPM HDD 256MB Cache Internal Hard Drive (ST4000VN006)

HD-3EU-SE

(1)

Internal hard drive, Designed for NAS storage solutions, 4TB capacity, 3.5’’ form factor, 256MB internal cache, Max 5400 RPM, Three year Rescue Data Recovery service included

£169.99 (incl. VAT)

In stock

WD 8TB Red Plus 5640rpm HDD 256MB Cache Internal NAS Hard Drive (WD80EFPX)

STO-WDC-01661

8TB Hard Drive, WD80EFPX, 3.5 Inch, SATA 6GB/s Interface, 256MB Cache, CMR Technology, Optimal compatibility for NAS systems, 3 Year Warranty

£299.99 (incl. VAT)

In stock

Seagate 24TB IronWolf PRO NAS HDD 7200RPM 512MB Cache Internal Hard Drive

STO-SEA-07495

Internal hard drive, Designed for NAS storage solutions, 24TB capacity, 512MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity

£799.99 (incl. VAT)

In stock

Seagate 8TB IronWolf NAS HDD 5400RPM 256MB Cache Internal Hard Drive

STO-SEA-00562

(1)

Internal hard drive, Designed for NAS storage solutions, 8TB capacity, 3.5’’ form factor, 256MB internal cache, Max 5400 RPM, Three year Rescue Data Recovery service included

£309.95 (incl. VAT)

In stock

Save 10%

Seagate 28TB IronWolf PRO NAS HDD 7200RPM 512MB Cache Internal Hard Drive

STO-SEA-06857

Internal hard drive, Designed for NAS storage solutions, 28TB capacity, 512MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity

£999.95 £899.99 (incl. VAT)

In stock

Seagate 10TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive

STO-SEA-00566

Internal hard drive, Designed for NAS storage solutions, 10TB capacity, 256MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity

£399.95 (incl. VAT)

In stock

WD 22TB Red Pro 7200rpm HDD 512MB Cache Internal NAS Hard Drive (WD221KFGX)

HD-59J-WD

Designed for NAS Systems, 22TB Capacity, 3.5’’ Form Factor, 7200 RPM, 512MB Cache, SATA III Connectivity, Max Data Transfer Rate of 255MB/s

£764.99 (incl. VAT)

In stock

Seagate 8TB Barracuda HDD 5400RPM 256MB Cache Internal Hard Drive (ST8000DM004)

HD-39Z-SE

(2)

Internal hard drive, 8TB capacity, 3.5’’ form factor, SATA III connectivity, 5400 RPM, 256MB internal cache

£219.95 (incl. VAT)

In stock

Seagate 2TB Barracuda HDD 7200RPM 256MB Cache Internal Hard Drive (ST2000DM008)

HD-3A5-SE

(3)

Internal hard drive, 2TB capacity, 3.5’’ form factor, SATA III connectivity, 7200 RPM, 256MB internal cache

£129.95 (incl. VAT)

In stock

Seagate 12TB IronWolf NAS 7200RPM HDD 256MB Cache Internal Hard Drive (ST12000VN0008)

HD-3BT-SE

Internal hard drive, Designed for NAS storage solutions, 12TB capacity, 3.5’’ form factor, 256MB internal cache, Max 7200 RPM, Three year Rescue Data Recovery service included

£499.99 (incl. VAT)

In stock

WD 12TB Red Pro 7200rpm HDD 512MB Cache Internal NAS Hard Drive (WD122KFBX)

STO-WDC-08128

Designed for NAS Systems, 12TB Capacity, 3.5’’ Form Factor, 7200 RPM, 512MB Cache, SATA III Connectivity, Max Data Transfer Rate of 267MB/s

£449.99 (incl. VAT)

In stock

Seagate 8TB IronWolf NAS 7200RPM HDD 256MB Cache Internal Hard Drive (ST8000VN004)

HD-3CD-SE

Internal hard drive, Designed for NAS storage solutions, 8TB capacity, 3.5’’ form factor, 256MB internal cache, Max 7200 RPM, Three year Rescue Data Recovery service included

£299.99 (incl. VAT)

In stock

Seagate 10TB IronWolf NAS 7200RPM HDD 256MB Cache Internal Hard Drive (ST10000VN000)

HD-3ES-SE

Internal hard drive, Designed for NAS storage solutions, 10TB capacity, 3.5’’ form factor, 256MB internal cache, Max 7200 RPM, Three year Rescue Data Recovery service included

£409.99 (incl. VAT)

In stock

WD 6TB Red Plus 5400rpm HDD 256MB Cache Internal NAS Hard Drive (WD60EFPX)

HD-59U-WD

Designed for NAS Systems, 6TB Capacity, 3.5’’ Form Factor, 256MB Cache, 7200 RPM, SATA III Connectivity, 185MB/s Max Data Transfer Rate

£264.95 (incl. VAT)

In stock

Seagate 6TB IronWolf NAS HDD 5400RPM 256MB Cache Internal Hard Drive

STO-SEA-00561

Internal hard drive, Designed for NAS storage solutions, 6TB capacity, 3.5’’ form factor, 256MB internal cache, Max 5400 RPM, Three year Rescue Data Recovery service included

£279.95 (incl. VAT)

In stock

Seagate 8TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive

STO-SEA-00565

Internal hard drive, Designed for NAS storage solutions, 8TB capacity, 256MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity

£349.99 (incl. VAT)

In stock

Seagate 20TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive

STO-SEA-00570

Internal hard drive, Designed for NAS storage solutions, 20TB capacity, 256MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity

£754.99 (incl. VAT)

In stock

Seagate 32TB IronWolf PRO NAS HDD 7200RPM 512MB Cache Internal Hard Drive

STO-SEA-07497

Internal hard drive, Designed for NAS storage solutions, 32TB capacity, 512MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity

£1,300.00 (incl. VAT)

In stock

Seagate 30TB IronWolf PRO NAS HDD 7200RPM 512MB Cache Internal Hard Drive

STO-SEA-07496

Internal hard drive, Designed for NAS storage solutions, 30TB capacity, 512MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity

£1,199.99 (incl. VAT)

In stock

WD 4TB Red Plus 5400rpm HDD 128MB Cache Internal NAS Hard Drive (WD40EFZZ)

STO-WDC-08130

4TB Hard Drive, WD40EFZZ, 3.5 Inch, SATA 6GB/s Interface, 128MB Cache, CMR Technology, Optimal compatibility for NAS systems, 3 Year Warranty

£179.99 (incl. VAT)

In stock

WD 2TB Red Plus 5400rpm HDD 64MB Cache Internal NAS Hard Drive (WD20EFPX)

STO-WDC-01663

2TB Hard Drive, WD20EFPX, 3.5 Inch, SATA 6GB/s Interface, 64MB Cache, CMR Technology, Optimal compatibility for NAS systems, 3 Year Warranty

£114.95 (incl. VAT)

In stock

Seagate 2TB IronWolf NAS HDD 5900RPM 256MB Cache Internal Hard Drive

STO-SEA-00560

Internal hard drive, Designed for NAS storage solutions, 2TB capacity, 3.5’’ form factor, 256MB internal cache, Max 5900 RPM, Three year Rescue Data Recovery service included

£139.99 (incl. VAT)

In stock

Synology HAT5300 3.5" 12TB Serial ATA III NAS Hard Drive

STO-SYN-00709

Synology HAT5300. HDD capacity: 12 TB, HDD speed: 7200 RPM, Storage drive buffer size: 256 MB, HDD size: 3.5", Interface: Serial ATA III

£719.99 (incl. VAT)

In stock

Seagate 4TB Barracuda HDD 5400RPM 256MB Cache Internal Hard Drive (ST4000DM004)

HD-37T-SE

(1)

Internal hard drive, 4TB capacity, 3.5’’ form factor, SATA III connectivity, 5400 RPM, 256MB internal cache

£159.95 (incl. VAT)

In stock

WD 12TB Red Plus 7200rpm HDD 512MB Cache Internal NAS Hard Drive (WD120EFGX)

STO-WDC-08127

12TB Hard Drive, WD120EFGX, 3.5 Inch, SATA 6GB/s Interface, 512MB Cache, CMR Technology, Optimal compatibility for NAS systems, 3 Year Warranty

£399.95 (incl. VAT)

In stock

Seagate 16TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive

STO-SEA-00568

Internal hard drive, Designed for NAS storage solutions, 16TB capacity, 256MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity

£599.99 (incl. VAT)

Pre order

Seagate 1TB BarraCuda HDD 7200rpm 256MB Cache Internal Hard Drive (ST1000DM014)

STO-SEA-01807

Internal hard drive, 1TB capacity, 3.5’’ form factor, SATA III connectivity, 7200 RPM, 256MB internal cache

£97.99 (incl. VAT)

Pre order

Seagate 16TB Barracuda HDD 7200RPM 512MB Cache Internal Hard Drive

STO-SEA-07498

Internal hard drive, 16TB capacity, 3.5’’ form factor, SATA III connectivity, 7200 RPM, 512MB internal cache

£429.95 (incl. VAT)

Pre order

WD 16TB Red Pro 7200rpm HDD 512MB Cache Internal NAS Hard Drive (WD161KFGX)

HD-57E-WD

Designed for NAS Systems, 16TB Capacity, 3.5’’ Form Factor, 7200 RPM, 512MB Cache, SATA III Connectivity, Max Data Transfer Rate of 259MB/s

£599.99 (incl. VAT)

Pre order

Seagate 12TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive

STO-SEA-00567

Internal hard drive, Designed for NAS storage solutions, 12TB capacity, 256MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity

£499.99 (incl. VAT)

Pre order

Seagate 18TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive

STO-SEA-00569

Internal hard drive, Designed for NAS storage solutions, 18TB capacity, 256MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity

£499.99 (incl. VAT)

Pre order

Save 7%

Seagate 6TB IronWolf PRO NAS HDD 7200RPM 256MB Cache Internal Hard Drive

STO-SEA-00564

Internal hard drive, Designed for NAS storage solutions, 6TB capacity, 256MB internal cache, 3.5’’ form factor, 7200 RPM, SATA III connectivity

£219.95 £204.95 (incl. VAT)

Pre order

Save 6%

Seagate 4TB SkyHawk HDD 256MB Cache Surveillance Internal CCTV Hard Drive

STO-SEA-00573

Internal hard drive, Designed for surveillance systems, 4TB capacity, 3.5’’ form factor, SATA III Connectivity, Up to 6Gb/s data transfer speeds, 256MB internal cache

£169.99 £160.00 (incl. VAT)

Pre order

Internal Hard Drives (HDD)

Seagate 8TB Barracuda HDD 5400RPM 256MB Cache Internal Hard Drive

Upgrade your storage with our selection of internal hard drives (HDD) at Overclockers UK. Ideal for expanding your gaming PC's capacity, these drives offer ample space to store everything from extensive media libraries to large-scale projects. With options ranging from 1TB to 20TB and beyond, internal HDDs provide reliable, long-term storage for your most important files. Whether you're building a new PC or upgrading an existing system, our range of internal hard drives combines high capacity with dependable performance. What’s more, you can take your pick from industry-leading manufacturers including Seagate and Western Digital!

Internal HDDs explained

Internal hard drives (HDDs) are a type of storage for your computer's operating system, applications, and files. Unlike SSDs, which use flash memory, HDDs store data on spinning magnetic platters, making them a cost-effective solution for large storage needs. They are especially suitable for bulk storage tasks, such as archiving media files, storing backups, and running large-scale applications that don't require the ultra-fast speeds of SSDs.

A M.2 SSD, 2.5-inch SSD, and 3.5-inch HDD.

Want to Read More?

Time for a storage upgrade, but unsure where to start? Don’t worry! This dedicated article on the Overclockers UK Blog has everything you need to know about HDDs and SSDs.

What’s the difference between an HDD and an SSD?

An HDD (Hard Disk Drive) uses spinning disks to store data, while an SSD (Solid State Drive) uses flash memory for faster data access. SSDs are quicker but often more expensive, whereas HDDs offer larger storage capacities at a lower cost.

How do I choose the right capacity for my internal HDD?

The right capacity depends on your storage needs. For general use, a 1TB or 2TB drive is usually sufficient. For storing large files such as videos, games, or backups, consider drives with 4TB or more.

Are internal hard drives reliable for long-term storage?

Internal HDDs are designed for long-term storage and are highly reliable when used under normal conditions. Regular backups and proper handling can further ensure the longevity of your data.

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Whether you are after advice, product information or even aftersales support we are here for you. Overclockers UK offers unparalleled customer service which is available across multiple platforms including telephone, social media, email, webnotes, live chat, and even a dedicated section on Overclockers forum. We even offer a 3 year warranty on our own PC's.

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Overclockers UK are rated one of the top PC, hardware and peripheral retailers in the country. From premium products to a personal shopping experience. You can trust us to deliver an unbeatable 5-star service.

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Internal Hard Drives (HDD)

Internal Hard Drives (HDD)

Internal HDDs explained

Want to Read More?

Internal Hard Drives (HDD) FAQ

What’s the difference between an HDD and an SSD?

How do I choose the right capacity for my internal HDD?

Are internal hard drives reliable for long-term storage?

The Overclockers Difference

Innovative Products and Exclusive Brands

Industry Leading Customer Support

5 Star Service

Subscribe and Save

Subscribe to the Newsletter

Stay Up To Date

What our customers say about us