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Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →An unplugged backup drive is harder for ransomware on your computer or network to reach. That simple isolation is why it can preserve a recovery copy when connected files are encrypted—but it does not make the drive infallible. A useful backup also needs to be current, readable, protected from physical loss, and tested by restoring files.
What unplugging the drive protects against
When an external drive is connected and mounted, software running on your computer with your permissions can generally access it. Disconnect it after a backup, and that computer can no longer directly modify or encrypt the drive. CISA and the FBI put the principle plainly in their 2021 DarkSide advisory: “Best practice is to store your backups on a separate device that cannot be accessed from a network, such as on an external hard drive.”
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This is a reduction in reachability, not a guarantee against every kind of loss. A drive can fail, be stolen or damaged, or sit untouched while newer work accumulates elsewhere. If malware is already present when you connect it, the backup session itself may also be at risk. The protection comes from keeping the copy disconnected except when you need to update or restore it.
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1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteHow an offline drive differs from other copies
| Backup approach | What it helps with | Main limitation |
|---|---|---|
| Unplugged external drive | Reduces direct access by malware on a connected computer or network. | Only contains data from its last successful backup; a single drive can be lost or fail. |
| Always-connected local or network storage | Offers convenient access and can support frequent backups. | If accessible to an infected system, it may also be exposed to ransomware. |
| Cloud-synced folder | Keeps files available across devices and may preserve versions, depending on the service. | Sync can propagate encrypted local files and may overwrite unaffected data; retention and recovery behavior vary by service. |
The StopRansomware Guide warns that encrypted files on a local device can sync to cloud storage and potentially overwrite unaffected copies. That does not mean every cloud backup service behaves the same way. Check whether your service keeps prior versions, how long it retains them, and how to recover them. Sync is useful, but it is not automatically an independent historical backup.
#1 Best Overall
- Easily store and access 2TB to content on the go with the Seagate Portable Drive, a USB external hard drive
- Designed to work with Windows or Mac computers, this external hard drive makes backup a snap just drag and drop
- To get set up, connect the portable hard drive to a computer for automatic recognition no software required
- This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable
- The available storage capacity may vary.
One unplugged drive is a layer, not a complete plan
HHS OCR describes CISA’s 3-2-1 approach as keeping three copies of important data—your primary copy and two backups—on two different types of media, with at least one copy offsite. The explanation appears in HHS OCR’s 2022 healthcare-sector cybersecurity material; its HIPAA requirements apply to covered entities and business associates, while the copy-and-location principle can inform personal backup planning.
The point is to avoid relying on one device in one place. An offsite copy can help if a local disaster affects your home, while another medium reduces dependence on a single device type. These copies do not all have to serve the same purpose: a connected copy may be convenient for routine recovery, while an unplugged drive supplies a harder-to-reach version.
Rank #2
- Easily store and access 1TB to content on the go with the Seagate Portable Drive, a USB external hard drive.Specific uses: Personal
- Designed to work with Windows or Mac computers, this external hard drive makes backup a snap just drag and drop. Reformatting may be required for Mac
- To get set up, connect the portable hard drive to a computer for automatic recognition no software required
- This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable
- The available storage capacity may vary.
Make the offline copy useful when you need it
Choose a drive your setup can actually use
Before buying or assigning a drive, check that its capacity can hold the files or backup set you intend to protect, that its connector works with your computer, and that you can use its encryption features if you need them. The best fit is a drive you can update and restore from—not simply the largest or newest option.
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- Connect the drive when you are ready to run a backup.
- Run the backup and confirm that the intended files or backup set were included.
- Check that the files are readable, then safely eject the drive using your operating system’s normal process.
- Disconnect it and store it somewhere protected from damage and theft. If practical, keep a separate copy offsite.
Match backup frequency to the cost of losing recent work
There is no universal household schedule in the cited guidance. As a practical rule, back up more often when your data changes frequently or losing the latest work would be costly. A drive that was backed up months ago may still preserve older files, but it cannot recover changes made since that backup.
Rank #3
- High capacity in a small enclosure – The small, lightweight design offers up to 6TB* capacity, making WD Elements portable hard drives the ideal companion for consumers on the go.
- Plug-and-play expandability
- Vast capacities up to 6TB[1] to store your photos, videos, music, important documents and more
- SuperSpeed USB 3.2 Gen 1 (5Gbps)
Test a restoration, not just the backup run
A completed backup job does not prove that recovery will work. CISA and the FBI recommend testing backup procedures regularly, and HHS OCR recommends periodic test restorations and integrity verification. The guidance does not set one interval for home users. Restore a sample file periodically; sometimes practice recovering a larger set or system so you can check the process, required passwords or software, and available destination hardware.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Keep the backup encrypted without losing access to it
Encryption and disconnection address different risks: encryption helps protect data if someone gets the drive, while disconnection makes it less reachable by software on a connected system. Government guidance recommends offline, encrypted backups. If you encrypt the drive, keep the recovery key or other credentials accessible to you but protected separately from the drive. A backup you cannot unlock is not a usable recovery copy.
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