We use cookies to give you the best possible experience on our site. By continuing to use the site you agree to our use of cookies. Find out more

Hard Drives

0

Hard drives are data storage devices used for storing data even when powered off. They differ in their design, performance, purposed use and capacity. A hard drive is a crucial part of your computer or laptop. Choose a suitable model depending on what you’ll be using your computer for.

Continue

Do you need an internal hard drive, or an easily detachable external drive?

  • To speed up your computer - SSD drives, especially the fastest models using the NVMe interface and M.2 ports, provide a substantial performance boost. A good low-budget alternative to SSD drives are hybrid SSHD drives. These also make your computer run faster but offer a better price to storage ratio.
  • To back up data or expand your data storage capacity - Currently,  internal 3.5"HDDs are the most cost-effective option. To share files within a network or with multiple devices, opt for an external 3.5" HDD or a network data storage device (NAS). These offer a range of advanced features, e.g. automatic backups.
  • Transferring documents and media - With a 2.5" external drive, you will have access to all your data anytime, anywhere. Compared to 3.5" drives, these are more rugged and durable. This makes them great for travelling. If you prefer miniature dimensions over capacity, go for a flash drive.

What capacity do you need?

How hard drive capacity translates into real-world usage:

CapacityVideo (DVD)Music (mp3)Photos (JPG)
120 GB25 films24,000 songs30,000 images
500 GB106 films100,000 songs128,000 images
2000 GB425 films400,000 songs512,000 images

Hard drive types:

  • SSD - Compared to traditional drives, SSDs eliminate lag times and achieve much higher speeds. Because they are made without any moving parts, their power consumption and noise emission are very low. SSD drives, especially when used as system drives, provide a tremendous performance boost for your computer. 
  • HDD - Because of their unrivalled price to storage ratio, HDDs are great for storing large amounts of data.
  • SSHD - These combine both a classic HDD and an SSD flash memory. That reduces the cost per gigabyte but also ensures fast data access and makes your computer boot up faster. SSHDs are a reasonable compromise, especially if you need more storage space and don't have two hard drive slots.

Interface / connector types:

  • Serial ATA (SATA) - SATA III hard drives (6Gb/s) are usually backwards compatible even with motherboards featuring SATA I/II (1,5/3 Gb/s) connectors. However, avoid plugging an SSD drive into a Serial ATA I port (1.5 Gb/s) as these are not entirely compatible. Moreover, the port's limited data throughput would cancel out the SSD's main advantage.
  • USB - Most commonly used to connect external drives. There is a massive difference in transmission speeds between individual generations - e.g. USB 3.0 (3.1 gen.1) is up to 10 times faster than USB 2.0.
  • M.2 - Before you buy a hard drive that uses the M.2 interface, check if your motherboard supports the NVMe interface or Serial ATA (or both) and then choose accordingly.
  • WiFi - Wireless connectivity greatly facilitate data transfers between external drives to laptops, phones, tablets, and other portable devices.

The effect various interfaces have on data transfer rates:

InterfaceTime needed to transfer 1GB of data *
SATA II (3Gb/s)3.3 s
SATA III (6Gb/s)1.6 s
USB 2.016,6 s
USB 3.0 (3.1 gen1)1.6 s
USB 3.1 (3.1 Gen2)0.8 s
NVMe0.4 s
WiFi 802.11ac8 s

* Minimum duration is derived from the maximum transfer speed of the interface

Was this information useful?
This form is for collecting Feedback Only. If you have any other inquiries, please our Customer Care team here.
Is something missing or displayed incorrectly? Let us know your suggestions so we can improve the website and customer experience.

Best Deals

1.
Samsung 960 EVO 250 gigabytes In stock > 5 pcs
SSD Disk M.2, NVMe, reading up to 3200 megabytes / sec, write up to 1500 megabytes / s, 100TBW
£122.90

2.
Hybrid Drive - 2.5" SATA III, NCQ 128 megabytes cache, 5400ot, ST2000LX001
£106.90

3.
WD My Book Duo 16TB In stock 3 pcs
External Hard Drive - 2× 8TB, 3.5", USB 3.0 (backwards compatible with USB 2.0), WDBLWE0160JCH-EESN
£581.90

More Bestsellers
123 ...
978 Results
Classic Range
Samsung 850 EVO 500GB
SSD Disk - 2.5 ", SATA III, read up to 540 megabytes/s, write up to 520 megabytes/s, 7mm

Samsung SSD 850 EVO is based on the technologically advanced 3D architecture V-NAND to achieve maximum read and write speeds in the sequential and...

£160.90 excl.VAT £134.08
Buy
In stock > 5 pcs
Order Code: SAS011c2
Deluxe Range
Samsung 1TB SSD T3
External Disk USB 3.1 Type-C Gen1 (USB-C), durable and reliable storage, lightweight, silent and vibration-free
Media and data are constantly in motion. We need to match their speed modern lifestyle. With a weight of approximately 51 grams T3 model is light...

£395.90 excl.VAT £329.92
Buy
In stock > 5 pcs
Order Code: SAS016d
Premium Range
Samsung 850 EVO 2000 GB
SSD Disk - 2.5", SATA III, read up to 540 megabytes / sec, write up to 520 megabytes / sec, 7 mm

Samsung SSD 850 EVO is based on the technologically advanced 3D architecture V-NAND to achieve maximum read and write speeds in the sequential and...

£625.90 excl.VAT £521.58
Buy
In stock 3 pcs
Order Code: SAS011e5
Samsung 850 EVO 250 GB
SSD Disk - 2.5 ", SATA III, read up to 540 megabytes/s, write up to 520 megabytes/s, 7mm

Samsung SSD 850 EVO is based on the technologically advanced 3D architecture V-NAND to achieve maximum read and write speeds in the sequential and...

£89.90 excl.VAT £74.92
Buy
In stock > 5 pcs
Order Code: SAS011b2
Crucial MX300 275 gigabytes
SSD Disk 2.5 ", SATA III, reading up to 530 megabytes / sec, write up to 500MB / s, Micron® 3D TLC NAND technology, Acronis® True Image HD, 7 mm
Increase power, stamina and overall efficiency of your PC. Start a few seconds and do...

£83.90 excl.VAT £69.92
Buy
In stock > 5 pcs
Order Code: CR006z4b
Kingston SSDNow V300 240GB 7mm
SSD Disk - 2.5", SATA III, TRIM, MLC, SandForce, read speed up to 450MB/s, write speed up to 450MB/s

Breathe new life into your PC and invest to upgrade its hard drive. Replacing the classic plotnového disk with a new SSD Kingston SSDNow V300 get a...

£89.90 excl.VAT £74.92
Buy
In stock > 5 pcs
Order Code: FT132d1
Kingston SSDNow V300 120GB 7mm
SSD Disk 2.5", SATA III, TRIM, MLC, SandForce, read up to 450MB/s, write up to 450MB/s
Accelerate your computer with a fast SSD drive from Kingston. Speed ??read and write is several times higher than conventional hard drives, and...

£54.90 excl.VAT £45.75
Buy
In stock > 5 pcs
Order Code: FT132c1
Kingston SSDNow UV400 120GB
SSD Disk - 2.5" SATA III, TLC, Marvell 88SS1074, read speed up to 550MB/s, write speed up to 350MB/s, 7 mm

Replacing the SSD as a classic plotnové disk is most accessible and most effective solution to greatly improve the performance of your PC or...

£51.90 excl.VAT £43.25
Buy
In stock > 5 pcs
Order Code: FT132e5a1
Kingston HyperX FURY SSD 120GB
SSD Disk - 2.5 ", SATA III, read up to 500MB/s, write up to 500MB/s
Anyone looking for high performance disk at a reasonable price, the HyperX FURY literally inspire. Modern SSD with a thickness of only 7 mm fits...

£53.90 excl.VAT £44.92
Buy
In stock > 5 pcs
Order Code: FT132f1
Samsung 960 EVO 500GB
SSD Disk M.2, NVMe, reading up to 3200 megabytes / sec, write up to 1800 megabytes / s, 200TBW

The advanced model of the extreme Samsung SSD 960 EVO is new generation that offers uncompromising performance in a compact design and is an ideal choice for use in high-end PCs and workstations. The disc is based on V-NAND technology and supports PCI Express Gen 3.0 × 4, providing higher throughput and lower latency.

£235.90 excl.VAT £196.58
Buy
In stock 2 pcs
Order Code: SAS010n5
Kingston SSDNow UV400 480GB
SSD Disk - 2.5" SATA III, TLC, Marvell 88SS1074, read speed up to 550MB/s, write speed up to 500MB/s, 7 mm

Replacing the classic plotnového drive for an SSD is the most affordable and effective solution to greatly improve the performance of your PC or...

£139 excl.VAT £115.83
Buy
In stock > 5 pcs
Order Code: FT132e5c1
Western Digital 2.5" Elements Portable 1000GB black
External Hard Drive - USB 3.0 (backward compatible with USB 2.0), 5400 rpm, WDBUZG0010BBK-EESN

Western Digital is the industry-leading company which sets the standards for data storage technologies. It produces highly reliable hard drives including the top-of-the-line Elements Portable series.

£62.90 excl.VAT £52.42
Buy
In stock > 5 pcs
Order Code: FW830w2
Samsung 850 Pro 512 GB
SSD Disk 2.5 ", SATA III, reading up to 550 megabytes/s, write up to 520 megabytes/s, 7mm
Samsung Pro 850 has a technologically innovative 3D V-NAND architecture for achieving maximum read and write speeds in sequential and random...

 Samsung 850 Pro 512 GB
-16%
-16% £268.49
£225.90 excl.VAT £188.25
Buy
In stock > 5 pcs
Order Code: SAS010l7
ADATA Premier SP550 240GB
SSD Disk - 2.5", SATA III, read speeds up to 560 MB/s, write speeds up to 510 MB/s, TLC, Trim, 7 mm

The ADATA Premier SP550 is an economical solid state drive with faster access times and high read and write speeds. The most important aspect of an SSD is its construction, which is why the SP550 contains no moving parts...

£69.90 excl.VAT £58.25
Buy
In stock > 5 pcs
Order Code: DU102f5b
Seagate Expansion Portable 1000GB
External Disk - 2.5", USB 3.0 (backward compatibility with USB 2.0)

External hard disk with a capacity of 2 TB provides extra storage space for your growing number of files, such as videos, music, photos and the...

£56.90 excl.VAT £47.42
Buy
In stock > 5 pcs
Order Code: FR060d1b
Western Digital 2.5" Elements Portable 750GB black
External Hard Drive - USB 3.0 (backward compatible with USB 2.0), 5400 rpm, WDBUZG7500ABK-EESN

Western Digital is the industry-leading company which sets the standards for data storage technologies. It produces highly reliable hard drives including the top-of-the-line Elements Portable series.

£49.90 excl.VAT £41.58
Buy
In stock > 5 pcs
Order Code: FW830w1a
Samsung 850 EVO 1000 GB
SSD Disk - 2.5 ", SATA III, read up to 540 megabytes/s, write up to 520 megabytes/s, 7mm

Samsung SSD 850 EVO is based on the technologically advanced 3D architecture V-NAND to achieve maximum read and write speeds in the sequential and...

£319.90 excl.VAT £266.58
Buy
In stock > 5 pcs
Order Code: SAS011e2
ADATA HD650 HDD 2.5" 1000GB black
External Disk - shock resistant, USB 3.0 (backward compatibility with USB 2.0)
Keep your data safe in this rugged high capacity external hard drive. It was designed for people with active outdoor lifestyles. The durable...

£59.90 excl.VAT £49.92
Buy
In stock > 5 pcs
Order Code: DU112k3
Samsung 960 EVO 250 gigabytes
SSD Disk M.2, NVMe, reading up to 3200 megabytes / sec, write up to 1500 megabytes / s, 100TBW

The advanced model of the extreme Samsung SSD 960 EVO is new generation that offers uncompromising performance in a compact design and is an ideal choice for use in high-end PCs and workstations. The disc is based on V-NAND technology and supports PCI Express Gen 3.0 × 4, providing higher throughput and lower latency.

£122.90 excl.VAT £102.42
Buy
In stock > 5 pcs
Order Code: SAS010n3
WD Elements Desktop 5000GB
External Disk - 3,5", USB 3.0, 7200ot, WDBWLG0050HBK-EESN
If the unit WD Elements connected via Hi-Speed ??USB 3.0, files can be read and stored faster than ever before. A two-hour movie in HD transfers in...

WD Elements Desktop 5000GB
-14%
-14% £178.20
£153.90 excl.VAT £128.25
Buy
In stock > 5 pcs
Order Code: FW890j
ADATA HD650 HDD 2.5" 1000GB red
External Disk - shock resistant, USB 3.0 (backward compatibility with USB 2.0)
Keep your data safe in this rugged high capacity external hard drive. It was designed for people with active outdoor lifestyles. The durable...

£60.90 excl.VAT £50.75
Buy
In stock > 5 pcs
Order Code: DU112k4
21 More... Top
123 ...
 

Hard Drives

New Arrivals

Hard Drives

Hard drives are used to permanently store data in computers, laptops and other devices. They are one of the most important parts of a computer and they differ in many features, therefore, when selecting the right hard drive, pay attention to its parameters.

How to choose the right hard drive?

The important parameters are hard drive capacity, type of interface, the technology used to write/read data, and in some cases, even the cooling system. Choose from our wide selection of internal hard drives or external hard drives. External hard drives are ideal for expanding the storage space of laptops or computers. They are ideal for storing large files that you don't have to use daily, e.g. films and videos.

SSDs

Solid State Drives use flash memory and have no moving mechanical components. Therefore, SSDs are incredibly quiet, fast, and less prone to mechanical damage. Because of their very low energy consumption, they are ideal for high-performance laptops or ultrabooks.

Server hard drives

Hard drives for data storage within a network (NAS) are designed for both home and corporate environments. A NAS can store data which you can access from anywhere using a simple web interface. Server hard drives also have to endure very demanding conditions. They are designed for continuous operation, during which their plates can rotate at 15,000 rpm.

WD drives

Western Digital produces powerful and efficient hard drives of the highest quality. Their hard drives have a reputation for being reliable and durable. Their colour edition hard drives will satisfy every user.
Was this information useful?
This form is for collecting Feedback Only. If you have any other inquiries, please our Customer Care team here.
Is something missing or displayed incorrectly? Let us know your suggestions so we can improve the website and customer experience.

Enter product name

Note (link, Part number etc.):

4 hours ago bought by company, Gravesend
4 hours ago bought by company, Gravesend
19 hours ago bought by company, Wymondham
 
Crucial BX200 240GB Last piece in stock
£73.90



23 hours ago bought by company, Royston
23 hours ago bought by company, Aberdeen
1 day ago bought by company, Birmingham
1 day ago bought by company, Birmingham
1 day ago bought by company, Greater Manchester
 
Samsung 960 1TB In stock > 5 pcs
£577.90



3 days ago bought by customer
4 days ago bought by company, Lewes
4 days ago bought by company, CHIPPENHAM
4 days ago bought by company, Hitchin

My Alza Log In Shipping & Payment About Us
Ship/Lang:
WEB2