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Hard Drives - Internal

Need help? Read our Internal Storage Buying Guide

Hard disk drives (HDDs) are used for storing masses of data in your system. They're mechanical, and thus slower than SSDs, but have the benefit of coming in much larger capacities – you can now get 12TB in a single drive. Internal drives come in two main form factors: 3.5in, which you typically use in desktop PCs, and 2.5in, which are usually for laptops, though a range of convertor brackets are also available. Consumer drives typically connect to the system via a SATA cable whereas drives destined for servers sometimes use what is known as a SAS connection.

500GB to 1TB 3.5" SATA Hard Drives

These 3.5" hard drives are available in 500GB, 750GB, and 1TB sizes and mostly utilise the newer SATA III 6Gb/s interface, ensuring as high speeds as possible with their mechanical technology, especially when using them in RAID. They're the most popular drives for today's desktop PCs, thanks to high spindle speeds, lots of cache and huge capacities.

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2TB to 4TB 3.5" SATA Hard Drives

These 3.5" hard drives are available in 2TB, 3TB, and 4TB sizes. They utilise the newer SATA III 6Gb/s interface, ensuring as high speeds as possible with their mechanical technology, especially when using them in RAID. They're the most popular drives for today's desktop PCs, thanks to high spindle speeds, lots of cache and huge capacities.

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5TB to 14TB 3.5" SATA Hard Drives

These 3.5" hard drives are available in 5TB, 6TB, 8TB, 10TB, 12TB, & now even 14TB sizes. They utilise the newer SATA III 6Gb/s interface, ensuring as high speeds as possible with their mechanical technology, especially when using them in RAID. They're the most popular drives for today's desktop PCs, thanks to high spindle speeds, lots of cache and huge capacities.

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500GB to 1TB 2.5" SATA Hard Drives

2.5" drives are significantly smaller than standard 3.5" ones, making them great candidates for upgrading the storage of your laptop or games console, especially as they're available in capacities of 500GB, 750GB and 1TB. Remember to check the height of the drives, as most portable or console systems only have bays which support 9.5mm drives or less. Also pay attention to the spin speed in rpm; while most drives here use the latest SATA III 6Gbps interface, faster spinning drives will read and write data faster.

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2TB to 5TB 2.5" SATA Hard Drives

2.5" drives are significantly smaller than standard 3.5" ones, making them great candidates for upgrading the storage of your laptop or games console, especially as they're available in capacities of 2TB, 3TB, 4TB and 5TB. Remember to check the height of the drives, as most portable or console systems only have bays which support 9.5mm drives or less. Also pay attention to the spin speed in rpm; while all drives here use the latest SATA III 6Gbps interface, faster spinning drives will read and write data faster.

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1TB to 16TB 3.5" SATA Enterprise Hard Drives

These hard drives are specially engineered for maximum reliability and durability for use in mission-critical systems such as servers and workstations. They also typically have a superior warranty to standard consumer-grade hard drives. Choose from a wide variety of capacity points and performance levels.

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1TB to 16TB 3.5" SATA NAS Hard Drives

These hard drives are specially engineered for maximum reliability and durability for use in NAS boxes. They also typically have a superior warranty to standard consumer-grade hard drives and often have special firmware that makes them more resistant to the problems caused by vibrations created by lots of drives mounted close together in NAS box. Choose from a wide variety of capacity points and performance levels.

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1TB to 12TB 3.5" Serial Attached SCSI (SAS) Hard Drives

Serial Attached SCSI (SAS) is a data transfer protocol that is more enterprise focussed than SATA, which is the standard bus for regular consumer drives. Available in 1TB, 2TB, 3TB, 4TB, 6TB, 8TB, 10TB and 12TB capacities SAS drives are more expensive per gigabyte, but they offer increased speed, longevity and improved error checking, which is vital for their intended use in enterprise, server and high-end workstation solutions. These 3.5" models are less limited in speed and capacity than 2.5" ones, but require more space. Designed to be used with mission critical systems such as servers, high-end work stations or any other users that require the best performance going to improve their systems performance.

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Case Bay Convertors / Brackets

Bay converters and brackets for PC Cases which include brackets and drive bay converters of various types.
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Hard Drive & Solid State Drive Coolers

Maximise the performance of your HDD or SSD. Coolers allow you to keep high performance SSDs or HDDs operating at their best.

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SATA Data Cables

SATA cables are used to connect hard disks, SSDs and optical drives to a PC's motherboard. Our range includes standard cables, versions with right-angled connectors to fit into tight spaces, SATA power adapters and SATA-to-MOLEX power connectors.

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