An external hard drive suitable for backups or for moving large files from one computer to another. Available in several sizes with different storage capacity, USB, Firewire and network access. Prices from 94 stores in this category.
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Product Lowest price User rating Rank Hard drive size Price/GB Form factor

WD My Book Duo Thunderbolt V2 8TB

External Hard Disk Drive

$1,062.30

  147
 8,000  GB 0.00  $/GB3.5 inches 

LaCie 4Big Quadra USB 3.0/FW800 12TB

External Hard Disk Drive

$1,463.50

  239
 12,000  GB 0.00  $/GB3.5 inches 

Seagate Backup Plus Slim Portable V2 USB 3.0 500GB

External Hard Disk Drive

$161.35

1
 7/10
1 user review
357
 500  GB 0.32  $/GB2.5 inches 

Seagate Expansion Desktop Drive V2 USB 3.0 4TB

External Hard Disk Drive

$255.00

4
 8/10
3 user reviews
67
 4,000  GB 0.06  $/GB3.5 inches 

WD My Book Duo 6TB

External Hard Disk Drive

$518.10

17
 41
 6,000  GB 0.09  $/GB3.5 inches 

WD My Book Duo 4TB

External Hard Disk Drive

$522.00

18
 95
 4,000  GB 0.13  $/GB3.5 inches 

LaCie 2Big Quadra V3 6TB

External Hard Disk Drive

$633.87

12
 204
 6,000  GB 0.11  $/GB3.5 inches 

LaCie 2Big Quadra V3 4TB

External Hard Disk Drive

$724.50

1
  170
 4,000  GB 0.18  $/GB3.5 inches 

WD My Book Duo 8TB

External Hard Disk Drive

$733.70

15
 55
 8,000  GB 0.09  $/GB3.5 inches 

WD My Book Duo Thunderbolt V2 4TB

External Hard Disk Drive

* $736.56

2
  218
 4,000  GB 0.18  $/GB3.5 inches 

WD My Book Duo 12TB

External Hard Disk Drive

$1,049.00

13
 100
 12,000  GB 0.09  $/GB3.5 inches 

LaCie 4Big Quadra USB 3.0/FW800 8TB

External Hard Disk Drive

$1,410.06

1
  336
 8,000  GB 0.18  $/GB 

LaCie 5big Thunderbolt 10TB

External Hard Disk Drive

$1,710.63

1
  321
 10,000  GB 0.17  $/GB3.5 inches 

LaCie 4Big Quadra USB 3.0/FW800 16TB

External Hard Disk Drive

$2,180.08

6
  209
 16,000  GB 0.14  $/GB3.5 inches 

LaCie 5big Thunderbolt 20TB

External Hard Disk Drive

$3,260.51

1
  322
 20,000  GB 0.16  $/GB3.5 inches 

Transcend StoreJet 35T3 TS3TSJ35T3 3TB

External Hard Disk Drive

$204.60

  225
 3,000  GB 0.00  $/GB3.5 inches 

Promise Pegasus2 R6 24TB

External Hard Disk Drive

$6,198.50

  348
 24,000  GB 0.00  $/GB 

Promise Pegasus2 R8 48TB

External Hard Disk Drive

$9,775.00

  349
 

Transcend StoreJet 25D3 TS500GSJ25D3 500GB

External Hard Disk Drive

$95.50

  237
 500  GB 0.00  $/GB2.5 inches 

Toshiba Canvio Connect 1.5TB

External Hard Disk Drive

$135.30

  227
 1,500  GB 0.00  $/GB2.5 inches 

Promise Pegasus2 R4 12TB

External Hard Disk Drive

$3,149.00

  350
 12,000  GB 0.00  $/GB 

Seagate Backup Plus Desktop V2 for Mac USB 3.0 4TB

External Hard Disk Drive

$327.70

  202
 4,000  GB 0.00  $/GB3.5 inches 

Transcend StoreJet 35 Turbo TS2TSJ35T3 2TB

External Hard Disk Drive

$182.50

  234
 2,000  GB 0.00  $/GB3.5 inches 

Toshiba Canvio Basics 2.5" USB 3.0 500GB

External Hard Disk Drive

$62.62

15
 34
 500  GB 0.13  $/GB2.5 inches 

HGST Touro Mobile USB 3.0 500GB

External Hard Disk Drive

* $66.70

2
 11
 500  GB 0.13  $/GB2.5 inches 

Adata DashDrive HV620 500GB

External Hard Disk Drive

$79.00

25
8/10
1 user review
23
 500  GB 0.16  $/GB2.5 inches 

HGST Touro Mobile MX3 500GB

External Hard Disk Drive

$79.35

3
 52
 500  GB 0.16  $/GB2.5 inches 

HGST Touro Mobile Pro 500GB

External Hard Disk Drive

$79.35

4
  50
 500  GB 0.16  $/GB2.5 inches 

Transcend StoreJet 25M3 TS500GSJ25M3 500GB

External Hard Disk Drive

$81.50

26
 83
 500  GB 0.16  $/GB2.5 inches 

Transcend StoreJet 25M2 TS500GSJ25M2 500GB

External Hard Disk Drive

$83.00

1
  244
 500  GB 0.17  $/GB2.5 inches 

Transcend StoreJet A3 TS500GSJ25A3K 500GB

External Hard Disk Drive

$83.38

12
 200
 500  GB 0.17  $/GB2.5 inches 

Transcend StoreJet 25D3 TS1TSJ25D3 1TB

External Hard Disk Drive

$86.00

15
3/10
1 user review
24
 1,000  GB 0.09  $/GB2.5 inches 

Transcend StoreJet 25H3 TS500GSJ25H3P 500GB

External Hard Disk Drive

$86.01

33
 88
 500  GB 0.17  $/GB2.5 inches 

WD My Passport for Mac USB 3.0 V2 500GB

External Hard Disk Drive

$87.38

13
 150
 500  GB 0.17  $/GB2.5 inches 

Seagate Expansion Portable Drive V2 USB 3.0 1TB

External Hard Disk Drive

$89.00

9
8/10
2 user reviews
14
 1,000  GB 0.09  $/GB2.5 inches 

Seagate Expansion Portable Drive 1TB

External Hard Disk Drive

$89.00

27
6/10
1 user review
4
 1,000  GB 0.09  $/GB2.5 inches 

WD Elements Portable SE 3.0 500GB

External Hard Disk Drive

$89.00

3
 108
 500  GB 0.18  $/GB2.5 inches 

Seagate Expansion Portable Drive USB 3.0 500GB

External Hard Disk Drive

$89.00

3
 93
 500  GB 0.18  $/GB2.5 inches 

Seagate Expansion Portable Drive V2 USB 3.0 500GB

External Hard Disk Drive

$89.00

2
6/10
1 user review
134
 500  GB 0.18  $/GB2.5 inches 

Toshiba Canvio Connect 750GB

External Hard Disk Drive

$89.99

3
 62
 750  GB 0.12  $/GB2.5 inches 

WD Elements Portable SE 1TB

External Hard Disk Drive

$90.85

2
 8/10
1 user review
249
 1,000  GB 0.09  $/GB2.5 inches 

Verbatim 2.5" Mobile Hard Drive USB 2.0 500GB

External Hard Disk Drive

$91.09

16
 87
 500  GB 0.18  $/GB2.5 inches 

Verbatim 2.5" Mobile Hard Drive USB 2.0 320GB

External Hard Disk Drive

$91.83

1
 6/10
1 user review
343
 320  GB 0.29  $/GB2.5 inches 

Adata DashDrive Durable HD710 USB 3.0 500GB

External Hard Disk Drive

$92.00

28
 122
 500  GB 0.18  $/GB3.5 inches 

Transcend StoreJet 25A3 TS1TSJ25A3 1TB

External Hard Disk Drive

$92.76

12
 123
 1,000  GB 0.09  $/GB2.5 inches 

WD Elements Portable USB 3.0 750GB

External Hard Disk Drive

$95.00

2
 97
 750  GB 0.13  $/GB2.5 inches 

Silicon Power Armor A80 1TB

External Hard Disk Drive

$95.95

1
  220
 1,000  GB 0.10  $/GB2.5 inches 

Verbatim Store 'n' Go Portable USB 3.0 500GB

External Hard Disk Drive

$98.15

17
7/10
4 user reviews
153
 500  GB 0.20  $/GB2.5 inches 

HGST Touro Mobile MX3 1TB

External Hard Disk Drive

$98.67

3
 6/10
1 user review
86
 1,000  GB 0.10  $/GB2.5 inches 

WD My Passport for Mac USB 3.0 500GB

External Hard Disk Drive

$99.00

1
  316
 500  GB 0.20  $/GB2.5 inches 

Adata DashDrive HV620 1TB

External Hard Disk Drive

$99.00

32
 37
 1,000  GB 0.10  $/GB2.5 inches 

Freecom ToughDrive Pro USB 2.0 320GB

External Hard Disk Drive

$99.00

1
  293
 320  GB 0.31  $/GB2.5 inches 

WD Elements Portable USB 3.0 1TB

External Hard Disk Drive

$99.00

31
5/10
5 user reviews
2
 1,024  GB 0.10  $/GB2.5 inches 

Silicon Power Diamond D03 500GB

External Hard Disk Drive

$99.95

1
  221
 500  GB 0.20  $/GB2.5 inches 

LaCie Hard Drive Porsche P9220 USB 3.0 500GB

External Hard Disk Drive

$102.44

15
 137
 500  GB 0.20  $/GB2.5 inches 

Adata DashDrive Classic CH11 USB 3.0 500GB

External Hard Disk Drive

$103.44

3
 241
 500  GB 0.21  $/GB2.5 inches 

Transcend StoreJet 25M3 TS1TSJ25M3 1TB

External Hard Disk Drive

$104.14

29
8/10
1 user review
30
 931  GB 0.11  $/GB2.5 inches 

Toshiba Canvio Connect II 1TB

External Hard Disk Drive

$105.36

10
 80
 1,000  GB 0.11  $/GB2.5 inches 

Seagate Backup Plus Slim Portable V2 USB 3.0 1TB

External Hard Disk Drive

$105.93

28
6/10
1 user review
12
 1,000  GB 0.11  $/GB2.5 inches 

Toshiba Canvio Connect 1TB

External Hard Disk Drive

$106.28

10
  82
 1,000  GB 0.11  $/GB2.5 inches 

Toshiba Canvio Basics 2.5" USB 3.0 1TB

External Hard Disk Drive

* $107.47

13
 20
 1,000  GB 0.11  $/GB2.5 inches 

Transcend StoreJet 25H3 TS1TSJ25H3P 1TB

External Hard Disk Drive

$108.08

33
8/10
1 user review
45
 1,000  GB 0.11  $/GB2.5 inches 

WD My Passport Ultra USB 3.0 1TB

External Hard Disk Drive

$109.00

7
8/10
9 user reviews
27
 1,000  GB 0.11  $/GB2.5 inches 

Silicon Power Armor A60 1TB

External Hard Disk Drive

$109.00

9
 124
 1,000  GB 0.11  $/GB2.5 inches 

WD My Passport Ultra II USB 3.0 1TB

External Hard Disk Drive

$109.00

22
 17
 1,000  GB 0.11  $/GB2.5 inches 

WD Elements Portable SE 3.0 750GB

External Hard Disk Drive

$109.00

1
 378
 750  GB 0.15  $/GB2.5 inches 

Seagate Backup Plus Portable USB 3.0 1TB

External Hard Disk Drive

$109.00

3
8/10
3 user reviews
208
 1,000  GB 0.11  $/GB2.5 inches 

Adata DashDrive Classic CH11 USB 3.0 750GB

External Hard Disk Drive

$109.19

1
  253
 750  GB 0.15  $/GB2.5 inches 

Adata DashDrive HV620 750GB

External Hard Disk Drive

$109.25

1
  184
 750  GB 0.15  $/GB2.5 inches 

Seagate Wireless Mobile Storage 500GB

External Hard Disk Drive

$109.65

18
 47
 500  GB 0.22  $/GB2.5 inches 

Silicon Power Diamond D06 1TB

External Hard Disk Drive

$109.71

1
 192
 1,000  GB 0.11  $/GB2.5 inches 

Verbatim Store 'n' Go Portable USB 3.0 1TB

External Hard Disk Drive

$109.95

26
5/10
2 user reviews
109
 1,000  GB 0.11  $/GB2.5 inches 

LaCie Hard Drive Porsche P9221 USB 500GB

External Hard Disk Drive

$111.08

1
  376
 500  GB 0.22  $/GB2.5 inches 

LaCie Hard Drive Porsche P9223 Slim USB 3.0 500GB

External Hard Disk Drive

$111.16

16
 120
 500  GB 0.22  $/GB2.5 inches 

WD Elements Portable SE 3.0 1TB

External Hard Disk Drive

$111.55

6
6/10
11 user reviews
90
 1,000  GB 0.11  $/GB2.5 inches 

Adata DashDrive Durable HD710 USB 3.0 1TB

External Hard Disk Drive

$111.55

38
 28
 1,000  GB 0.11  $/GB2.5 inches 

HP px3100 External Portable USB 3.0 HDD 1TB

External Hard Disk Drive

$111.57

7
  116
 1,000  GB 0.11  $/GB2.5 inches 

Seagate Backup Plus Slim for Mac USB 3.0 1TB

External Hard Disk Drive

$112.70

7
 70
 1,000  GB 0.11  $/GB2.5 inches 

Seagate FreeAgent GoFlex USB 2.0 1TB

External Hard Disk Drive

$113.85

1
  299
 1,000  GB 0.11  $/GB2.5 inches 

Verbatim Store 'n' Go SuperSpeed Portable USB 3.0 500GB

External Hard Disk Drive

$114.62

3
  358
 500  GB 0.23  $/GB2.5 inches 

WD My Passport Ultra Metal Edition USB 3.0 1TB

External Hard Disk Drive

$119.00

4
6/10
2 user reviews
53
 1,000  GB 0.12  $/GB2.5 inches 

WD My Passport USB 3.0 750GB

External Hard Disk Drive

$119.00

1
 118
 750  GB 0.16  $/GB2.5 inches 

Silicon Power Armor A85 1TB

External Hard Disk Drive

$119.95

1
  338
 1,000  GB 0.12  $/GB2.5 inches 

Seagate Expansion Desktop Drive V2 USB 3.0 2TB

External Hard Disk Drive

$120.00

4
5/10
10 user reviews
107
 2,000  GB 0.06  $/GB3.5 inches 

Seagate Expansion Desktop Drive V2 USB 3.0 1TB

External Hard Disk Drive

$120.75

1
  157
 1,000  GB 0.12  $/GB3.5 inches 

Verbatim 2.5" Mobile Hard Drive USB 2.0 1TB

External Hard Disk Drive

$120.82

12
 146
 1,000  GB 0.12  $/GB2.5 inches 

LaCie Hard Drive Porsche P9220 USB 3.0 1TB

External Hard Disk Drive

$122.61

15
8/10
2 user reviews
51
 1,000  GB 0.12  $/GB2.5 inches 

Toshiba StorE Canvio V2 2.5" USB 3.0 750GB

External Hard Disk Drive

$122.64

1
 158
 750  GB 0.16  $/GB2.5 inches 

Transcend StoreJet 25M2 TS1TSJ25M2 1TB

External Hard Disk Drive

$122.91

1
  242
 1,000  GB 0.12  $/GB2.5 inches 

Toshiba StorE Slim V2 2.5" USB 3.0 1TB

External Hard Disk Drive

$122.95

4
 8/10
1 user review
96
 1,000  GB 0.12  $/GB2.5 inches 

Verbatim Store 'n' Go SuperSpeed Portable USB 3.0 1TB

External Hard Disk Drive

$124.19

4
  342
 1,000  GB 0.12  $/GB2.5 inches 

Toshiba Canvio Slim II USB 3.0 1TB

External Hard Disk Drive

$125.09

2
  205
 1,000  GB 0.13  $/GB2.5 inches 

Adata DashDrive Classic CH11 USB 3.0 1TB

External Hard Disk Drive

$126.50

3
  233
 1,000  GB 0.13  $/GB2.5 inches 

Seagate Expansion Portable Drive 2TB

External Hard Disk Drive

$126.65

31
6/10
1 user review
1
 2,000  GB 0.06  $/GB2.5 inches 

HGST Touro Mobile USB 3.0 1TB

External Hard Disk Drive

$129.00

1
  173
 1,000  GB 0.13  $/GB2.5 inches 

Seagate Backup Plus Desktop V2 USB 3.0 2TB

External Hard Disk Drive

$129.00

31
 19
 2,000  GB 0.06  $/GB3.5 inches 

LaCie Rugged Mini USB 3.0 7200rpm 500GB

External Hard Disk Drive

$129.89

16
 138
 500  GB 0.26  $/GB2.5 inches 

Adata DashDrive HE720 USB 3.0 500GB

External Hard Disk Drive

* $134.99

4
 224
 500  GB 0.27  $/GB2.5 inches 

Silicon Power Diamond D03 1TB

External Hard Disk Drive

$135.00

2
 7/10
1 user review
226
 1,000  GB 0.14  $/GB2.5 inches 

Imation Apollo Gen II 500GB

External Hard Disk Drive

$135.13

1
  379
 500  GB 0.27  $/GB2.5 inches 
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