Choose cloud backup when recovering files from several devices is the priority, cloud sync when you mainly need the latest files wherever you work, and an external drive when you need a local copy you can access offline. For photos or records that would be difficult to replace, keep a separate local copy and an off-site copy; check what each service or device can restore before relying on either one.
If a device fails or a file is deleted, you need a separate copy you can recover—not merely the same live folder visible on another device. The National Cyber Security Centre describes a backup as a copy kept in a separate safe location.
Files may be created on a computer, phone or tablet. You need to check which devices and folders a backup service covers so that new work does not depend entirely on remembered manual transfers.
Your main concern is opening the latest document or photo on another device. Microsoft and Google explain that changes to synced files can appear across connected locations, so separate recovery arrangements still matter.
Choose it when: You need a local copy of photos or documents that remains available without an internet connection.
Trade-off: A drive kept with the computer can be lost or damaged in the same incident; store another copy separately.
Choose it when: Automatic, recoverable copies from several devices matter more than immediate local access.
Trade-off: Upload and restore depend on connectivity and account access, while the service sets the scope and retention of recoverable files.
Choose it when: You chiefly want the current version of a file on your computer, phone or browser.
Trade-off: Unwanted edits and deletions can sync too, so convenient access does not replace an independent backup.
Choose it when: Important files call for both a local restore option and a copy kept elsewhere.
Trade-off: You must maintain and test both copies rather than assuming that having two locations guarantees recovery.
For photos, study files and routine work records spread across devices, start with the failure you most need to recover from. Then check the following requirements against the files and devices you actually use.
| Concern | What to check | Who this matters to |
|---|---|---|
| Recovery after loss or deletion | Check which files are copied, how long older or deleted versions remain available, and how to restore them. | If a photo is deleted or a device fails, I need an earlier copy I can actually retrieve. Around 27% of consumers put recoverability first. |
| Automatic multi-device coverage | Confirm supported devices and operating systems, included folders, and the conditions for automatic backups. | When I create files on both my phone and computer, I do not want protection to depend on remembering each transfer. Roughly 27% of consumers prioritise automatic coverage. |
| Access to current files | Check which folders sync, whether essential files work offline, and what happens after an unwanted change. | I need the document I am editing to be available on another device, even if that means managing synced changes. Around 20% of consumers make current-file access their primary concern. |
| Local capacity and offline use | Measure your files and expected growth; check the drive connector and the devices you intend to use. | For a large photo collection, I want a local copy I can reach without waiting for an internet connection. About 26% of consumers place local capacity and offline control first. |
Microsoft and Google state that changes to synced files can be reflected elsewhere. That includes an accidental deletion or unwanted edit.
Use sync for access to current files, and check version-history retention or keep a separate backup for files you cannot replace.
A drive kept beside or attached to the main computer may be exposed to the same loss or destructive event. The DfE Cyber Security Hub advises keeping an off-site copy and testing backups.
Keep another copy separately, disconnect a local backup between updates where practical, and try restoring sample files.
Apple says that photos and videos synced through iCloud Photos are not included in the daily iCloud device backup.
Check photo-library and device-backup settings separately, and arrange another recovery path for irreplaceable photos.
The Information Commissioner's Office identifies risks when organisational personal data is moved to insecure personal storage or devices with weak access controls.
For employer or client records, use an approved device, account and backup route, and follow your organisation's security procedures.
Relevant if you use an iPhone or iPad alongside iCloud Photos or iCloud Drive.
Relevant if you use OneDrive to keep Windows files available across devices.
Relevant if you use Google Drive to reach current files on different devices.
Relevant if you want to assess a dedicated backup service for several kinds of device.
Relevant if you are considering a portable SSD for a local copy of files.
These drives are options for making local copies of photos and work or study files. Measure what you need to store and check device compatibility before choosing one; a drive alone does not provide an off-site copy or determine how older versions will be recovered.
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Consider this for a portable local copy if 1TB covers your files and expected growth.
The product name specifies USB 3.2 Gen 2, also described there as 3.1 Gen 2. Check the connector on the device you will use and keep another copy elsewhere.
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Consider this for a local copy that you also intend to use with one of the devices named in the product title.
The title lists USB 3.2 Gen 2, iPhone 15/16, PC, Mac and USB-C devices, with claimed speeds up to 1,050 MB/s read and 1,000 MB/s write. Check your exact device and how you will back up and restore its files.
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Consider this if you need a portable local copy and its stated USB-C device compatibility fits your setup.
The title specifies USB 3.2 Gen 2x2 and a claimed transfer speed up to 2,000 MB/s. Check host support before relying on that speed, and confirm the exact phone and backup process you intend to use.
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Consider this for a computer-based local copy if 2TB gives you enough room for current files and future backups.
This is a portable external hard drive. Check its connection, the devices you will use and your intended restore procedure before relying on it.
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Consider this for a portable local copy if your measured files and expected growth fit within 2TB.
Check compatibility with your computer or other intended device, then decide how you will make repeat copies and restore files when needed.
No: sync keeps current files aligned, while a backup provides a separate recoverable copy. Microsoft and Google say changes in synced folders can be reflected across locations, so check the service's recovery period or keep another copy of important files.
Measure the files and device data you actually intend to recover, then allow space for growth and any older copies you want to keep. Check which folders and phone data your chosen method includes rather than using a device's total capacity as the answer.
Make a separate copy, keep at least one backup away from the main device, and try restoring sample files periodically. The DfE Cyber Security Hub advises testing backups so that you know the recovery process works.
Check your employer's approved storage and backup rules before copying work records to a personal drive or account. The Information Commissioner's Office identifies access-control and data-loss risks with personally owned storage used for organisational personal data.
Check account security, sharing settings, recovery options and whether the service's availability suits the files you plan to store. The Information Commissioner's Office advises considering the security and availability of a cloud service for the types of files you upload.