Hard Drives - Internal

Internal hard drives are designed to store large amounts of data inside a system. This category includes drives commonly used for archives, media libraries, backups, and projects where capacity is more important than instant access.

In day-to-day use, internal hard drives are appreciated for their practicality. They offer a cost-effective way to keep large files close at hand without relying on external devices. Buyers usually think about capacity, reliability ratings, and rotational speed. Noise and vibration can also influence how a system feels over time.

For dependable, high-capacity storage, internal hard drives remain a widely used and sensible choice.

Need help? Read our Internal Storage Buying Guide

2TB to 4TB 3.5" SATA Hard Drives

HDDs (Hard Disk Drives) are the most cost effective data storage device. While HDDs are considerably slower than SSDs, you get considerably more TB of storage per pound spent.

These 3.5in SATA 3 HDDs are ideal for desktop PCs and external enclosures. They connect to the motherboard using a SATA 3 cable and are intended to be installed in a 3.5in drive bay. These particular SATA 3 HDDs communicate at up to 600MB/s and are have a capacity of up to 4TB.

You can check the compatibility of these HDDs with your system in your component documentation or our buyers guide.

New Refurbished
Refurbished 2TB WD Blue WD20EZBX, 3.5" HDD, SATA III - 6Gb/s, 7200rpm, 256MB Cache, OEMWD Blue 2TB 3.5" SATA 3 HDD/Hard Drive 7200rpm LN176119
Key Specifications
- Refurbished 2TB WD Blue WD20EZBX
- 3.5" HDD
- SATA III - 6Gb/s
- 7200rpm
- 256MB Cache
- OEM
No customer review
Get it Tomorrow, 07 Nov
£113.99
Get it Tomorrow, 07 NovIn stock
Get it Tomorrow, 07 Nov

1TB to 32TB 3.5" SATA Enterprise Hard Drives

HDDs (Hard Disk Drives) are the most cost effective data storage device. While HDDs are considerably slower than SSDs, you get considerably more TB of storage per pound spent. Server HDDs are designed for 24/7 usage and differ from consumer HDDs in having greater endurance and longer warranties.

SATA 3 HDDs are for use in hot swap 3.5in drive bays, connecting to the server via a SATA 3 or SAS backplane and controller. These particular SATA 3 HDDs communicate at up to 600MB/s and come in a wide variety of capacities.

You can check the compatibility of these HDDs with your server in your system documentation or our buyers guide.

New
4TB Synology Enterprise Series HAT5320-4T Hard Disk Drive, 3.5", SATA III (6Gb/s), 7200RPM, 512MB Cache, OEMSynology Enterprise Series HAT5320-4T 4TB 3.5" SATA III 7200RPM HDD / Hard Disk Drive LN175651
Key Specifications
- 4TB Synology Enterprise Series HAT5320-4T Hard Disk Drive
- 3.5"
- SATA III (6Gb/s)
- 7200RPM
- 512MB Cache
- OEM
No customer review
48hrReplacement
£479.99
ETA 1-3 days
48hrReplacement
New
20TB Synology Enterprise Series HAT5320-20T Hard Disk Drive, 3.5", SATA III (6Gb/s), 7200RPM, 512MB Cache, OEMSynology Enterprise Series HAT5320-20T 20TB 3.5" SATA III 7200RPM HDD / Hard Disk Drive LN175650
Key Specifications
- 20TB Synology Enterprise Series HAT5320-20T Hard Disk Drive
- 3.5"
- SATA III (6Gb/s)
- 7200RPM
- 512MB Cache
- OEM
No customer review
48hrReplacement
£1,159.99
ETA 1-3 days
48hrReplacement
New
24TB Synology Enterprise Series HAT5320-24T Hard Disk Drive, 3.5", SATA III (6Gb/s), 7200RPM, 512MB Cache, OEMSynology Enterprise Series HAT5320-24T 24TB 3.5" SATA III 7200RPM HDD / Hard Disk Drive LN175652
Key Specifications
- 24TB Synology Enterprise Series HAT5320-24T Hard Disk Drive
- 3.5"
- SATA III (6Gb/s)
- 7200RPM
- 512MB Cache
- OEM
No customer review
48hrReplacement
£1,333.99
ETA 1-3 days
48hrReplacement

1TB to 26TB 3.5" SATA NAS Hard Drives

HDDs (Hard Disk Drives) are the most cost effective data storage device. While HDDs are considerably slower than SSDs, you get considerably more TB of storage per pound spent. NAS HDDs are designed for 24/7 usage and differ from consumer HDDs in having greater endurance and vibration resistance.

These 3.5in SATA 3 HDDs are for use in NAS boxes, connecting directly to the drive bay. These particular SATA 3 HDDs communicate at up to 600MB/s and come in a wide variety of capacities.

You can check the compatibility of these HDDs with your server in your system documentation or our buyers guide.

New
8TB Synology Enterprise Series HAT5320-8T Hard Disk Drive, 3.5", SATA III (6Gb/s), 7200RPM, 512MB Cache, OEMSynology Enterprise Series HAT5320-8T 8TB 3.5" SATA III 7200RPM HDD / Hard Disk Drive LN168754
Key Specifications
- 8TB Synology Enterprise Series HAT5320-8T Hard Disk Drive
- 3.5"
- SATA III (6Gb/s)
- 7200RPM
- 512MB Cache
- OEM
No customer review
48hrReplacement
£667.99
ETA 1-3 days
48hrReplacement