Best External Hard Drives for Backup

The best external hard drives for backup are the WD My Book for affordable desktop capacity, the Seagate Expansion Portable for simple travel backups, and the Samsung T7 Shield or Crucial X9 Pro when speed, portability, and resistance to drops matter more than cost per terabyte.

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#1 Pick

WD 2TB Elements Portable External Hard Drive for Windows, USB 3.2 Gen 1/USB 3.0 for PC & Mac, Plug and Play Ready – WDBU6Y0020BBK-WESN

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#2 Pick

Western Digital WD 5TB Elements Portable External Hard Drive for Windows, USB 3.2 Gen 1/USB 3.0 for PC & Mac, Plug and Play Ready – WDBU6Y0050BBK-WESN

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#3 Pick

Sandisk 2TB Extreme Portable SSD, Up to 1050MB/s, USB-C, USB 3.2 Gen 2, IP65 Water and Dust Resistance, Updated Firmware, External Solid State Drive, SDSSDE61-2T00-G25

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#4 Pick

WD 6TB Elements Portable External Hard Drive for Windows, USB 3.2 Gen 1/USB 3.0 for PC & Mac, Plug and Play Ready – WDBHJS0060BBK-WESN

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Best external hard drives for backup at a glance

Actual throughput depends on file size, the source drive, thermal conditions, available USB bandwidth, and whether the drive is nearly full. The figures above describe the relevant performance class rather than a guaranteed transfer rate for every workload.

Our top picks by backup scenario

Best overall desktop backup: WD My Book

The WD My Book is the strongest choice for a home computer, gaming PC, or media server that needs several terabytes of continuously available backup space. Desktop HDDs offer much lower cost per terabyte than SSDs, and capacities of 8TB, 12TB, 16TB, and higher are practical for photo libraries, game recordings, project files, and system images.

Its main limitation is power and portability. A desktop My Book uses an external power adapter, so it is intended to remain on a desk. It is also mechanical, meaning it is more vulnerable to shock while spinning and is noticeably slower than a modern portable SSD. WD’s utilities can help with drive management and password protection on supported models, but Windows File History, Windows Backup, macOS Time Machine, or a dedicated backup application may provide a more complete automated workflow.

Best budget high-capacity option: Seagate Expansion Desktop

Choose the Seagate Expansion Desktop when capacity per dollar is the priority and you do not need bundled security or sophisticated backup controls. It is a sensible destination for a second copy of a large Steam library, raw video archive, or computer image.

The trade-off is a relatively basic software package. That is not necessarily a disadvantage: the drive works as ordinary USB storage, so it can be used with Windows Backup, File History, macOS Time Machine after suitable formatting, or Linux tools. The simpler design also makes it easy to use with multiple computers, although automatic backup scheduling must come from the operating system or another application.

Best portable HDD: Seagate Expansion Portable

The portable Expansion is appropriate when you need 2TB or 4TB in a bus-powered enclosure without carrying a power brick. It is a good fit for moving a photo catalog between a desktop and laptop or keeping an offline copy in a drawer.

Its USB-powered design draws more power than an SSD during transfers and can be slower with many small files. Treat it as a transportable backup, not a drive to toss into a backpack unprotected: the internal platters and heads remain sensitive to impacts, especially while the disk is active.

Best fast and rugged portable backup: Samsung T7 Shield

The Samsung T7 Shield is the better choice for photographers, video editors, and laptop users who regularly create or restore backups away from a desk. Its USB 3.2 Gen 2 interface can approach 1GB/s with a compatible host, and its rugged enclosure provides substantially better protection against dust, water splashes, and drops than a conventional portable HDD.

The included security software supports password-based AES 256-bit hardware encryption. Remember that encryption protects the contents if the drive is lost; it does not protect against accidental deletion, ransomware, or a failed SSD. Keep a separate backup of irreplaceable files.

Best long-warranty portable SSD: Crucial X9 Pro

The Crucial X9 Pro combines compact size, roughly 1GB/s-class USB performance, and a five-year limited warranty. It is a strong option when the drive will travel frequently and you value warranty coverage over bundled backup software.

Unlike the T7 Shield, it is not primarily distinguished by a built-in security ecosystem. Use BitLocker To Go on Windows, encrypted disk images or FileVault-compatible workflows on macOS, or a trusted cross-platform encryption tool if confidential data is stored on it.

HDD or SSD: which is better for backup?

For a primary backup copy that stays at home, an HDD usually wins because capacity is inexpensive. For a portable working backup, an SSD is safer to carry and much faster when restoring many small files. Neither technology should be your only copy: SSDs can fail without warning, while HDDs are sensitive to shock, wear, and mechanical faults.

Here is a practical capacity calculation. Suppose your computer contains 1.6TB of data and grows by 200GB per year. A 2TB drive leaves only about 200GB of free space, which is too little for comfortable version history. A 4TB drive provides room for the current 1.6TB, three years of growth (600GB), and approximately 1.8TB for older versions or temporary backup operations. For this workload, 4TB is the sensible minimum; 8TB is preferable if video files or system images are involved.

How transfer speed changes backup time

These are idealized calculations using 1TB as 1,000,000MB. Real backups take longer because files are fragmented, the source drive may be slower, and backup software verifies data. An SSD’s advantage is especially noticeable with thousands of small documents, application files, and project assets; a large sequential video file may narrow the difference between a good HDD and a slower SSD.

Reliability, encryption, and software considerations

• Use a 3-2-1 layout: keep three copies of important data, on two different storage types or devices, with one copy offline or off-site.
• Check the warranty: portable SSDs commonly offer three to five years, while external HDD warranties often range from one to three years. Warranty length is useful evidence of manufacturer support, but it does not guarantee data recovery.
• Separate backup from synchronization: synchronization can copy deletions and ransomware damage. Versioned backup software is safer for important files.
• Encrypt laptops and travel drives: hardware AES encryption, BitLocker, FileVault-based workflows, or encrypted containers can prevent a lost drive from exposing personal data. Store the recovery key separately.
• Safely eject the drive: this reduces the chance of interrupted writes and filesystem corruption, particularly with HDDs.
• Test restoration: once a month, open several files from the backup. Every few months, perform a full restore of a folder or system image.

Which drive should you buy?

For most desktop users, buy a desktop HDD with at least twice the capacity currently occupied by your data and pair it with automated, versioned backups. For mobile users, pay more for a portable SSD if restoring files quickly, surviving travel, and protecting confidential data are worth the higher price.