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Best Buy customers often prefer the following products when searching for biggest external hard drives.

If you're looking to store a lot of data, you might want to consider a big external hard drive. These can be used to back up your computer or store large amounts of files conveniently. Browse the top-ranked list of biggest external hard drives below along with associated reviews and opinions.

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  1. WD - easystore 18TB External USB 3.0 Hard Drive - Black - Front_Zoom

    Model: WDBAMA0180HBK-NESN
    SKU: 6427995
    Top comment

    "Western Hard drive...Largest HD I have ever purchased. I should have done this several years ago. ...Good drives...Good drives for nas, highly recommended. I recommend you buy the largest drives you can."

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    Product Description

    Carry and preserve important files wherever you go with this Western Digital easystore desktop hard drive. The 18TB capacity offers ample storage space for your files, while the USB interface ensures compatibility with a wide range of devices. This Western Digital easystore external hard drive has a compact profile for increased portability, and the included WD Discovery software makes backing up data easy.
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    Top comment

    "Western Hard drive...Largest HD I have ever purchased. I should have done this several years ago. ...Good drives...Good drives for nas, highly recommended. I recommend you buy the largest drives you can."

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    Product Description

    Carry and preserve important files wherever you go with this Western Digital easystore desktop hard drive. The 18TB capacity offers ample storage space for your files, while the USB interface ensures compatibility with a wide range of devices. This Western Digital easystore external hard drive has a compact profile for increased portability, and the included WD Discovery software makes backing up data easy.
    See all External Hard Drives
    See all External Hard Drives
  2. WD - easystore 20TB External USB 3.0 Hard Drive - Black - Front_Zoom

    Model: WDBAMA0200HBK-NESN
    SKU: 6500985
    Top comment

    "largest capacity drive that I have ever owned. nice to have all of that space. drive works great....Best external drive...Love the western digital drives! They age much better than other external drives!"

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    Product Description

    Back up important files securely with this black WD easystore desktop hard drive. The 20TB capacity provides ample space for archives and videos, while the USB 3.0 connectivity provides broad compatibility with most Windows and Mac devices. This WD easystore desktop hard drive features plug-and-play functionality for a quick, simple setup.
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    Top comment

    "largest capacity drive that I have ever owned. nice to have all of that space. drive works great....Best external drive...Love the western digital drives! They age much better than other external drives!"

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    Product Description

    Back up important files securely with this black WD easystore desktop hard drive. The 20TB capacity provides ample space for archives and videos, while the USB 3.0 connectivity provides broad compatibility with most Windows and Mac devices. This WD easystore desktop hard drive features plug-and-play functionality for a quick, simple setup.
    See all External Hard Drives
    See all External Hard Drives
  3. Seagate - Expansion 14TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black - Front_Zoom
    Top comment

    "Included software does not backup external HDs...Built in software does not backup external hard drives. I bought acronis But the external hd performs as expected...Seagate External hard drives are what I use for every single computer!"

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    Product Description

    Ideal for the home, office, or dorm, Seagate Expansion desktop drive offers enormous desktop storage for photos, movies, music and more. Backing up and transferring content is incredibly easy — just drag and drop! To get set up, connect the USB hard drive to Windows or Mac — no software required. For Apple Time Machine, simply reformat. Included is an 18-inch USB 3.0 cable and 18W power adapter. Plus, Seagate Expansion comes with Rescue Data Recovery Services for additional peace of mind.
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    Top comment

    "Included software does not backup external HDs...Built in software does not backup external hard drives. I bought acronis But the external hd performs as expected...Seagate External hard drives are what I use for every single computer!"

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    Product Description

    Ideal for the home, office, or dorm, Seagate Expansion desktop drive offers enormous desktop storage for photos, movies, music and more. Backing up and transferring content is incredibly easy — just drag and drop! To get set up, connect the USB hard drive to Windows or Mac — no software required. For Apple Time Machine, simply reformat. Included is an 18-inch USB 3.0 cable and 18W power adapter. Plus, Seagate Expansion comes with Rescue Data Recovery Services for additional peace of mind.
    See all External Hard Drives
    See all External Hard Drives
  4. WD - My Passport 1TB External USB 3.0 Portable Hard Drive - Black - Front_Zoom
    Top comment

    "Good portable hard drive...Good portable hard drive. Not the biggest, but that wasn't needed....PORTABLE HARD DRIVE...External Drive was exactly what was needed. Needed to move and review information from 2 desktop hard drives."

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    Product Description

    Store, share and transport files with the lightweight Western Digital My Passport Portable Hard Drive. The SuperSpeed USB port lets you transfer large files in seconds and 256-bit AES hardware encryption helps keep your files secure. The My Passport provides enough space to store thousands of files and documents. Auto backup capability allows you to select the time and frequency of file transfers.
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    Top comment

    "Good portable hard drive...Good portable hard drive. Not the biggest, but that wasn't needed....PORTABLE HARD DRIVE...External Drive was exactly what was needed. Needed to move and review information from 2 desktop hard drives."

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    Product Description

    Store, share and transport files with the lightweight Western Digital My Passport Portable Hard Drive. The SuperSpeed USB port lets you transfer large files in seconds and 256-bit AES hardware encryption helps keep your files secure. The My Passport provides enough space to store thousands of files and documents. Auto backup capability allows you to select the time and frequency of file transfers.
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    See all External Hard Drives
  5. WD - My Passport 2TB External USB 3.0 Portable Hard Drive - Red - Front_Zoom
    Top comment

    "Best External Hard Drive...These are the best external hard drives to get I have never had a major issue and when I had a small issue they replaced the hard drive no questions asked with the WD built in warranty....External hard drive...I like that they offer different colors so I can keep straight the different external hard drives I own."

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    Product Description

    Store, share and transport files with the lightweight Western Digital My Passport Portable Hard Drive. The SuperSpeed USB port lets you transfer large files in seconds and 256-bit AES hardware encryption helps keep your files secure. The My Passport provides enough space to store thousands of files and documents. Auto backup capability allows you to select the time and frequency of file transfers.
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    Top comment

    "Best External Hard Drive...These are the best external hard drives to get I have never had a major issue and when I had a small issue they replaced the hard drive no questions asked with the WD built in warranty....External hard drive...I like that they offer different colors so I can keep straight the different external hard drives I own."

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    Product Description

    Store, share and transport files with the lightweight Western Digital My Passport Portable Hard Drive. The SuperSpeed USB port lets you transfer large files in seconds and 256-bit AES hardware encryption helps keep your files secure. The My Passport provides enough space to store thousands of files and documents. Auto backup capability allows you to select the time and frequency of file transfers.
    See all External Hard Drives
    See all External Hard Drives
  6. WD - My Passport 4TB External USB 3.0 Portable Hard Drive - Black - Front_Zoom
    Top comment

    "external hard drives...purchased 2 external hard drives, I much prefer the smaller compact 1...Good hard drive...Good external hard drives with a lot of space does the job"

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    Product Description

    Store, share and transport files with the lightweight Western Digital My Passport Portable Hard Drive. The SuperSpeed USB port lets you transfer large files in seconds and 256-bit AES hardware encryption helps keep your files secure. The My Passport provides enough space to store thousands of files and documents. Auto backup capability allows you to select the time and frequency of file transfers.
    See all External Hard Drives
    Top comment

    "external hard drives...purchased 2 external hard drives, I much prefer the smaller compact 1...Good hard drive...Good external hard drives with a lot of space does the job"

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    Product Description

    Store, share and transport files with the lightweight Western Digital My Passport Portable Hard Drive. The SuperSpeed USB port lets you transfer large files in seconds and 256-bit AES hardware encryption helps keep your files secure. The My Passport provides enough space to store thousands of files and documents. Auto backup capability allows you to select the time and frequency of file transfers.
    See all External Hard Drives
    See all External Hard Drives
  7. WD - easystore 14TB External USB 3.0 Hard Drive - Black - Front_Zoom

    Model: WDBAMA0140HBK-NESN
    SKU: 6425303
    Top comment

    "Awesome Hard Drive...Nice Hard Drive. Replaced all my small external hard drives....WD Easystore 14TB External Hard Drive...Big boy external hard drive. My biggest yet. I am used to smaller, quicker hard drives, but I needed to house some media and transfer a few other hard drive's data. "

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    Product Description

    Find a reliable storage solution for large files with this WD easystore external desktop hard drive. The USB 3.0 interface and backward-compatibility with USB 2.0 offer broad connectivity, while the automatic backup solution reduces the risk of data loss. This WD easystore external desktop hard drive features a 14TB capacity to provide ample space for videos and photos.
    See all External Hard Drives
    Top comment

    "Awesome Hard Drive...Nice Hard Drive. Replaced all my small external hard drives....WD Easystore 14TB External Hard Drive...Big boy external hard drive. My biggest yet. I am used to smaller, quicker hard drives, but I needed to house some media and transfer a few other hard drive's data. "

    See all customer reviews

    Product Description

    Find a reliable storage solution for large files with this WD easystore external desktop hard drive. The USB 3.0 interface and backward-compatibility with USB 2.0 offer broad connectivity, while the automatic backup solution reduces the risk of data loss. This WD easystore external desktop hard drive features a 14TB capacity to provide ample space for videos and photos.
    See all External Hard Drives
    See all External Hard Drives
  8. WD - Easystore 1TB External USB 3.0 Portable Hard Drive - Black - Front_Zoom
    Top comment

    "Portable hard drive...Excellent portable external hard drive. Never had any problems with Western Digital drives....Easystore 1TB External USB 3.0 Portable Hard Drive...External hard drive was purchased in order to maintain music and pictures that were on old hard drives."

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    Product Description

    Carry and preserve important files wherever you go with this Western Digital easystore portable hard drive. The 1TB capacity offers ample storage space for your files, while the USB interface ensures compatibility with a wide range of devices. This Western Digital easystore external hard drive has a compact profile for increased portability, and the included WD Discovery software makes backing up data easy.
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    Top comment

    "Portable hard drive...Excellent portable external hard drive. Never had any problems with Western Digital drives....Easystore 1TB External USB 3.0 Portable Hard Drive...External hard drive was purchased in order to maintain music and pictures that were on old hard drives."

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    Product Description

    Carry and preserve important files wherever you go with this Western Digital easystore portable hard drive. The 1TB capacity offers ample storage space for your files, while the USB interface ensures compatibility with a wide range of devices. This Western Digital easystore external hard drive has a compact profile for increased portability, and the included WD Discovery software makes backing up data easy.
    See all External Hard Drives
    See all External Hard Drives
  9. Seagate - Expansion 18TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black - Front_Zoom
    Top comment

    "Great external drive, I love these Seagate external drives with 18TB because I never delete back up....Great external hard drives for files....Very good external hard drive, I bought 2 so far and haven't given me any issues. "

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    Product Description

    Ideal for the home, office, or dorm, Seagate Expansion desktop drive offers enormous desktop storage for photos, movies, music and more. Backing up and transferring content is incredibly easy — just drag and drop! To get set up, connect the USB hard drive to Windows or Mac — no software required. For Apple Time Machine, simply reformat. Included is an 18-inch USB 3.0 cable and 18W power adapter. Plus, Seagate Expansion comes with Rescue Data Recovery Services for additional peace of mind.
    See all External Hard Drives
    Top comment

    "Great external drive, I love these Seagate external drives with 18TB because I never delete back up....Great external hard drives for files....Very good external hard drive, I bought 2 so far and haven't given me any issues. "

    See all customer reviews

    Product Description

    Ideal for the home, office, or dorm, Seagate Expansion desktop drive offers enormous desktop storage for photos, movies, music and more. Backing up and transferring content is incredibly easy — just drag and drop! To get set up, connect the USB hard drive to Windows or Mac — no software required. For Apple Time Machine, simply reformat. Included is an 18-inch USB 3.0 cable and 18W power adapter. Plus, Seagate Expansion comes with Rescue Data Recovery Services for additional peace of mind.
    See all External Hard Drives
    See all External Hard Drives
  10. WD - easystore 16TB External USB 3.0 Hard Drive - Black - Front_Zoom

    Model: WDBAMA0160HBK-NESN
    SKU: 6427998
    Top comment

    "Great External Hard Disk Drive...I have always purchased Western Digital Hard Disk Drives. This external hard drive is very sleek and fast as well. ...WD - easystore 16TB External USB 3.0 Hard Drive...This is the largest size hard drive able to use on the Xbox One X. "

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    Product Description

    Carry and preserve important files wherever you go with this Western Digital easystore desktop hard drive. The 16TB capacity offers ample storage space for your files, while the USB interface ensures compatibility with a wide range of devices. This Western Digital easystore external hard drive has a compact profile for increased portability, and the included WD Discovery software makes backing up data easy.
    See all External Hard Drives
    Top comment

    "Great External Hard Disk Drive...I have always purchased Western Digital Hard Disk Drives. This external hard drive is very sleek and fast as well. ...WD - easystore 16TB External USB 3.0 Hard Drive...This is the largest size hard drive able to use on the Xbox One X. "

    See all customer reviews

    Product Description

    Carry and preserve important files wherever you go with this Western Digital easystore desktop hard drive. The 16TB capacity offers ample storage space for your files, while the USB interface ensures compatibility with a wide range of devices. This Western Digital easystore external hard drive has a compact profile for increased portability, and the included WD Discovery software makes backing up data easy.
    See all External Hard Drives
    See all External Hard Drives
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