High Capacity Hard Drives

High Capacity Hard DrivesJanuary 2018(Last Updated 12 January 2018)

The best hard drives with lots of disk space to backup all the cat photos you could want. Which is a lot.
Compare top brands including Western Digital, Seagate and LaCie
Every week we rank the best external hard drives based on features, reviews and price
We compare: 916 External Hard Drive Models 13,800 External Hard Drive Reviews 5,480 External Hard Drive Prices
We compare:
916 External Hard Drive Models
13,800 External Hard Drive Reviews
5,480 External Hard Drive Prices
Table List
Sort by
Scroll up to see results
View Today's Best Deals on External Hard Drives
Rank
Overall Score
Reviews
Price
USB Powered
Hard Drive Capacity
Colours
Weight
Release Date
#1

90

Armor A60 (4Tb)

Silicon Power Armor A60 (4Tb)

 Compare  Compare

£55.90

Idealo UK
Get Deal
Edit
4TB
Edit
Black
Edit
255g
Edit
Dec 2016
The highest scoring high capacity hard drive on the market, with great features and multiple awards
#2

90

Porsche Design (4TB)

LaCie Porsche Design (4TB)

 Compare  Compare

£18.63

Save £32
Gameseek
Get Deal
Edit
4TB
Edit
Silver
Edit
1.1kg
Edit
Jul 2017
The cheapest high capacity hard drive on the market, with multiple awards and great features
#3

87

HD650

A‑DATA HD650

 Compare  Compare

£43.65

Save £4.00
Idealo UK
Get Deal
Edit
4TB
Edit
Black
Edit
390g
Edit
Jul 2017
A top-value and new 4TB external hard drive, with good features
#4

87

Classic 3.0

Freecom Classic 3.0

 Compare  Compare

£53.28

Una Technology
Get Deal
Edit
5TB
Edit
Black
Edit
140g
Edit
May 2017
A top-value and astonishingly light weight 5TB external hard drive, with very good features
#5

86

Armor A85M (5Tb)

Silicon Power Armor A85M (5Tb)

8 Reviews
 Compare  Compare

£70.00

Save £105
Amazon UK
Get Deal
Edit
5TB
Edit
Black
Edit
364g
Edit
Nov 2017
The highest review score high capacity hard drive available, with good features
#6

86

Porsche Design (6Tb)

LaCie Porsche Design (6Tb)

 Compare  Compare

£44.99

Ebuyer Business
Get Deal
Edit
6TB
Edit
Silver
Edit
1kg
Edit
May 2017
A fairly new and impressive value for money USB powered external hard drive, with great features and an enormous 6TB hard drive capacity
#7

86

d2 (6TB)

LaCie d2 (6TB)

 Compare  Compare

£145.00

Save £40
Idealo UK
Get Deal
Edit
6TB
Edit
Silver
Edit
1.7kg
Edit
Jul 2017
A multi award winning and new 6TB external hard drive, with an Editor's Choice award from two expert review websites and 2 further awards from other expert sites
#8

85

Rugged RAID 4TB

LaCie Rugged RAID 4TB

20 Reviews + 1 Award
01net.com - 4 Star
 Compare  Compare

£194.95

Save £131
Idealo UK
Get Deal
Edit
4TB
Edit
Orange
Edit
800g
Edit
Jun 2016
An award winning and fully featured 4TB external hard drive, with a fair price
#9

85

DriveStation HD-LCU3 4TB

Buffalo DriveStation HD‑LCU3 4TB

32 Reviews + 16 Awards
Digital Versus - 5 StarTrusted Reviews - RecommendedExpert Reviews - UltimatePC Advisor.co.uk - Recommended
 Compare  Compare

£112.97

Save £3.00
Ebuyer
Get Deal
Edit
4TB
Edit
Black
Edit
1kg
Edit
Jun 2016
A multi award winning and good value for money 4TB external hard drive, with a Gold award from one expert review website and 15 further awards from other expert sites
#10

85

Canvio Connect II 3TB

Toshiba Canvio Connect II 3TB

26 Reviews + 4 Awards
pckoloji.com.tr - Best product of the Year 2015myce.com - Editor's Choicegadgetsmagazine.com.ph - Editor's PickExpert Reviews - Best Buy
 Compare  Compare

£88.11

Save £4.00
Ebuyer
Get Deal
Edit
3TB
Edit
Black
Edit
230g
Edit
Apr 2015
A best selling and top-value 3TB external hard drive, good for ALL the cat pictures
#11

85

Porsche Design (6Tb)

LaCie Porsche Design (6Tb)

 Compare  Compare

£60.44

Idealo UK
Get Deal
Edit
6TB
Edit
Silver
Edit
870g
Edit
May 2017
A low cost and fairly new USB powered external hard drive, with great features and a massive 6TB hard drive capacity
#12

85

MyPassport Ultra

Western Digital MyPassport Ultra

 Compare  Compare

£43.44

Ebuyer Business
Get Deal
Edit
4TB
Edit
Bordeaux
Edit
153g
Edit
Jun 2016
A fully featured and astoundingly cheap 4TB external hard drive
#13

84

Maxtor M3

Maxtor Maxtor M3

657 Reviews
 Compare  Compare

£36.97

Laptops Direct
Get Deal
Edit
3TB
Edit
Black
Edit
236g
Edit
Mar 2016
A breathtakingly cheap and top-rated 3TB external hard drive, good for ALL the cat pictures
#15

84

My Book 3TB

Western Digital My Book 3TB

3 Reviews
 Compare  Compare

£89.50

Ebuyer Business
Get Deal
Edit
3TB
Edit
Black
Edit
960g
Edit
Sep 2016
A fairly new and cheap 3TB external hard drive, good for ALL the cat pictures
#14

84

My Passport Ultra (4TB)

Western Digital My Passport Ultra (4TB)

 Compare  Compare

£120.00

Amazon UK
Get Deal
Edit
4TB
Edit
Blue
Edit
153g
Edit
Jun 2016
A multi award winning and spectacularly light weight 4TB external hard drive, good for ALL the cat pictures
#16

83

Porsche Design (5Tb)

LaCie Porsche Design (5Tb)

 Compare  Compare

£94.99

Save £21
John Lewis
Get Deal
Edit
5TB
Edit
Grey
Edit
1kg
Edit
Dec 2016
A relatively new and impressive value for money 5TB external hard drive, with very good features
#17

83

Canvio Premium 3TB

Toshiba Canvio Premium 3TB

 Compare  Compare

£73.35

Save £30
Amazon UK
Get Deal
Edit
3TB
Edit
Grey
Edit
230g
Edit
Apr 2016
A very popular and phenomenally cheap 3TB external hard drive, with very good features
#18

83

My Passport 4TB

Western Digital My Passport 4TB

 Compare  Compare

£117.96

Save £61
Ebuyer
Get Deal
Edit
4TB
Edit
Black
Edit
250g
Edit
Oct 2016
A fairly new and cheap 4TB external hard drive, with very good features
#19

82

My Passport 4TB

Western Digital My Passport 4TB

 Compare  Compare

£110.99

Save £13.00
Idealo UK
Get Deal
Edit
4TB
Edit
Black
Edit
170g
Edit
Mar 2017
A fairly new and good value for money 4TB external hard drive, with great features
#20

82

My Book 4TB

Western Digital My Book 4TB

 Compare  Compare

£109.90

Save £45
Idealo UK
Get Deal
Edit
4TB
Edit
Black
Edit
1kg
Edit
Oct 2016
A very good value for money and best selling 4TB external hard drive, with great features

No matching products found.

 More  Loading…

Today's Best External Hard Drive Deals

38% Price Drop
{Silicon Power Armor A85M (5Tb)
8 reviews
£70.00
Was £113 (16 days ago)
Hard Drive Capacity
5TB
USB Powered
Yes
Colour
Black
6% Price Drop
{Seagate Expansion External Hard Drive - 3 TB
£74.97
Was £80 (10 days ago)
Hard Drive Capacity
3TB
USB Powered
Yes
Colour
Black
5% Price Drop
{Seagate STDR4000200 4TB
£124.36
Was £131 (30 days ago)
Hard Drive Capacity
4TB
USB Powered
Yes
Colour
Black
8% Price Drop
{LaCie Porsche Design (8TB)
£179.04
Was £194 (12 days ago)
Hard Drive Capacity
8TB
USB Powered
Yes
Colour
Aluminium
7% Price Drop
{Seagate STEB2000200
£64.98
Was £70 (8 days ago)
Hard Drive Capacity
2TB
USB Powered
Yes
Colour
Black
View More Amazing External Hard Drive Deals

Trending External Hard Drive Comparisons

Western Digital My Book 8TB
Western Digital
My Book 8TB
£198.99
11% lighter
VS
Seagate Backup Plus Hub 8TB
Seagate
Backup Plus Hub 8TB
£171.09
£28 cheaper
Better brand
Toshiba Canvio Basics 2TB
Toshiba
Canvio Basics 2TB
£40.62
More popular
VS
Maxtor M3 2TB
Maxtor
M3 2TB
£8.45
£32 cheaper
Better brand
A lot lighter
Seagate Expansion Portable 4TB
Seagate
Expansion Portable 4TB
£94.99
£8 cheaper
39% lighter
VS
Maxtor M3 4TB
Maxtor
M3 4TB
£102.99
Better brand
A-DATA HV620 1TB
A-DATA
HV620 1TB
£47.00
More popular
VS
A-DATA HV620S
A-DATA
HV620S
£49.95
A lot bigger
hard drive
capacity
Seagate Maxtor M3 1TB
Seagate
Maxtor M3 1TB
£38.40
Better brand
VS
Western Digital WD Elements 1TB
Western Digital
WD Elements 1TB
£7.99
£30 cheaper
Lighter
Toshiba Canvio Ready 1TB
Toshiba
Canvio Ready 1TB
£47.97
Better brand
VS
Western Digital WD Elements 1TB
Western Digital
WD Elements 1TB
£7.99
£40 cheaper
Lighter
Maxtor M3 1TB
Maxtor
M3 1TB
£44.98
£30 cheaper
9x lighter
Better brand
VS
Seagate Expansion External Hard Drive - 3 TB
Seagate
Expansion External Hard Drive - 3 TB
£74.97
Significantly
bigger hard
drive capacity
ADATA HD650 (1Tb)
ADATA
HD650 (1Tb)
£83.15
35g lighter
VS
Maxtor Maxtor M3
Maxtor
Maxtor M3
£36.97
£46 cheaper
67% bigger hard
drive capacity
Toshiba Canvio Ready 1TB
Toshiba
Canvio Ready 1TB
£47.97
Better brand
VS
Seagate Backup Plus Portable 1tb
Seagate
Backup Plus Portable 1tb
£42.70
£5 cheaper
Significantly
lighter
Toshiba Canvio Ready 2TB
Toshiba
Canvio Ready 2TB
£69.98
Better brand
VS
Seagate Expansion 2TB
Seagate
Expansion 2TB
£59.09
£11 cheaper
More popular
Lighter
Maxtor M3 2TB
Maxtor
M3 2TB
£8.45
£51 cheaper
Better brand
A bit lighter
VS
Seagate Expansion 2TB
Seagate
Expansion 2TB
£59.09
More popular
Toshiba Canvio Basics 2TB
Toshiba
Canvio Basics 2TB
£40.62
£43 cheaper
1TB bigger hard
drive capacity
VS
ADATA HD650 (1Tb)
ADATA
HD650 (1Tb)
£83.15
Lighter
Western Digital WD Elements Desktop 3tb
Western Digital
WD Elements Desktop 3tb
£81.50
£44 cheaper
5% lighter
VS
Seagate Expansion 4TB USB 3.0
Seagate
Expansion 4TB USB 3.0
£125.55
Better brand
1TB bigger hard
drive capacity
USB powered
A-DATA HD700 1TB
A-DATA
HD700 1TB
£51.01
£7 cheaper
Lighter
VS
ADATA HD720 1Tb
ADATA
HD720 1Tb
£57.84
More popular
Transcend StoreJet 25H3 3TB
Transcend
StoreJet 25H3 3TB
£105.49
34% bigger hard
drive capacity
Lighter
VS
LaCie Rugged Thunderbolt 2TB
LaCie
Rugged Thunderbolt 2TB
£104.95
Better brand
Western Digital WD Elements Portable (1Tb)
Western Digital
WD Elements Portable (1Tb)
£49.21
100g lighter
VS
Toshiba Canvio Basics 1TB
Toshiba
Canvio Basics 1TB
£40.98
£8 cheaper
Better brand
Toshiba Canvio Basics 2TB
Toshiba
Canvio Basics 2TB
£40.62
More popular
A lot bigger
hard drive
capacity
VS
Toshiba Canvio Premium 1TB
Toshiba
Canvio Premium 1TB
£39.05
65g lighter
Seagate Expansion Portable 500GB
Seagate
Expansion Portable 500GB
£38.98
36% lighter
VS
Toshiba Canvio Basics 1TB
Toshiba
Canvio Basics 1TB
£40.98
More popular
Better brand
Bigger hard
drive capacity
Western Digital My Passport 4TB
Western Digital
My Passport 4TB
£114.75
46% lighter
VS
Seagate Backup Plus Portable 4Tb
Seagate
Backup Plus Portable 4Tb
£99.95
£15 cheaper
Better brand
Toshiba 3TB Canvio Connect II
Toshiba
3TB Canvio Connect II
£93.38
£15 cheaper
Lighter
VS
Toshiba Canvio Ready 3TB
Toshiba
Canvio Ready 3TB
£108.38
More popular

Frequently Asked Questions (FAQs)

QHow is the capacity of hard drives measures?
AModern external hard drives are measured in gigabytes (Gb), which equates to approximately 1,000 megabytes (Mb). A single mp3 takes up about 3-4Mb, while a single picture takes 1-2Mb. Larger capacity drives are measured in terrbytes (Tb), where 1Tb = 1,000Gb.
QWhat security is available for external hard drives?
AMost hard drives lack any serious security options - however some have password protection to only allow authorised access. This can be a software password, or an actual physical keypad on the drive itself. Heavier degrees of security are available - including biometric fingerprint scanners, which will only unlock the data to someone with authorised fingerprints.
QHow are external hard drives powered?
AMost external hard drives are powered via USB, meaning they can be plugged directly into the computer and used from there. However some very large/powerful drives need too much power for USB alone, and will also require am external power supply to function properly.

class="c2-anchor p2-h2" id="guide"

External Hard Drive Buying Guide

External hard drives are portable and used to backup files and data from your computer, so they’re safeguarded in case of accident or for retrieval at a later date. While Cloud-based backups are being used more and more for backups, external hard drives still have several important benefits compared to online backups:

  • Peace of mind: many people don’t 100% trust the Cloud yet, and having their data stored in some unknown, invisible server somewhere leaves them worried about the long-term safety of their data. External hard drives offer tangible, physical objects to safely backup your files, without having to rely on 3rd-party companies.
  • Backing up and restoring files is far faster, especially with newer models that use USB 3 for transferring data.
  • Data can be retrieved without needing a net connection, making them useful if travelling or if you find yourself somewhere without a solid net connection.
  • High-level security options - such as fingerprint scanners, palm vein scanners and number pads - offer vastly increased security and peace of mind when storing very important files. Moreover, there is the increased security of being able to physically lock away the hard drives away from prying eyes.
  • Finally, USB hard drives are still one of the best methods for quickly moving very large files between different computers. It is frequently easier (as long as the computers aren’t too far apart) to simply transfer the file to the drive, plug it in to the second computer, and transfer rather than having to deal with slower upload/download speeds from services such as Dropbox.
Resource ID 111

Capacity

The main important consideration when choosing an external hard drive is the capacity. This Is a measure of how much data the drive can hold, and is measured in gigabytes (Gb) or terrabytes (Tb) . A gigabyte is 1000 megabytes, and a terabyte is 1000 gigabytes. Our drives range from relatively small portable 120gig drives to enormous 5Tb drives, which can safely hold all the data from multiple machines at once. Generally speaking the higher the capacity the better, but it does depend on what you’re going to be backing up. If you only use your computer to store documents, low-res photos and the like, a 2-500 gig drive should be enough. On the other hand, large capacity drives are useful for storing RAW photos, video editing or Photoshop files.

Size & Portability

Hand in hand with the capacity of the drive is its size. Generally speaking, the larger the capacity of a drive, the bigger it is. Small-capacity drives are extremely portable, being no larger than a mobile phone, so can be transported very easily. On the other end of the scale, the very large capacity drives are not meant to be portable, and usually sit in or under your desk as a safe deposit for all your data. Portability and weight will only become a real issue when choosing the very high-capacity drives, but it is worth paying attention to if you plan on transporting the drive frequently.

Read/Write Speeds

Read & write speeds measure how quickly data can be written from & to the external hard drive. This is measures in bytes per second - the higher the speed, the faster large files (such as movies) will be transferred onto or from the drive. The read-write speeds are also affected by the USB version supported - USB 3.0 supported drives allow far higher transfer rates than USB 2 drives, so it is worth seeking out the newest drive you can for the fastest data transfer speeds.

Power

On the subject of USBs, external hard drives are powered by 2 main methods: via USB or externally power lead. Smaller drives will be powered via USB - this means that the same lead that transfers the data also powers the device. This means no battery, no extra leads, and they are far more portable. Larger drives may be so big and powerful that USB alone can’t provide enough power - in which case they may need an external power connection to properly function. This means that extra consideration has to be made for a spare power socket and the required leads - making them less use when on the go.

Resource ID 109

Extras

Finally, there are a wealth of extras that can be found in more advanced models of external hard drives. Some of these may only be useful in specific situations, and you will usually pay more for them, but the utility may well be worth the extra cost. Some examples of extra features include:

  • Integrated card reader: a built in card reader in the drive allows the device to also read/write to SD cards.
  • Fingerprint scanner: an optical fingerprint scanner drastically increases the security of your device, by meaning only specific fingerprints can unlock the device and access the files. For even greater security, a ‘palm vein’ scanner detects the blood pumping through the unique arrangement of veins in your hand, meaning that the scanner cannot be fooled by severed fingers - the owner has to be there in person and alive.
  • Ruggedized outer layer: for those who frequently take drives outdoors or in harsh conditions, a hefty rubber or metal basing protects the device from damage, keeping your files intact through even the worst conditions.