What Cloud Storage, File Sharing & Backup Tools covers
This section covers services that store files online and share them: Dropbox, Google Drive, OneDrive and related tools.
There is one distinction here worth more than everything else in this section, and it is the one people get wrong: sync is not backup.
Cloud storage keeps a folder on your device mirrored to a server and to your other devices. That protects you from losing a laptop. It does not protect you from deleting a file, from a file becoming corrupted, or from ransomware encrypting your documents — because sync faithfully copies all of those changes everywhere within seconds. People discover this at the worst possible moment, having assumed for years that their files were backed up.
A real backup keeps separate, versioned copies that a mistake on your device cannot reach. Most cloud services do offer version history and a recycle bin, which recovers many accidents, but retention windows are limited and vary by plan. Knowing your service’s actual retention period is worth five minutes.
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How the guides in this section differ
Sync, share or back up. Three different jobs. Most services do the first two well, and the third only partly.
Where it fits. Google Drive suits people in Google Docs and Gmail. OneDrive is integrated with Windows and Microsoft 365. Dropbox is the neutral option that works well across everything. The right answer is usually whichever ecosystem you already live in.
Storage or collaboration. Some services are primarily a place to put files; others assume several people editing simultaneously. That changes how conflicts are handled.
| Service | Fits best with | Notable strength | Watch |
|---|---|---|---|
| Google Drive | Google Workspace, Gmail | Real-time collaboration | Google formats are not standard files |
| OneDrive | Windows, Microsoft 365 | Deep Windows integration | Sync settings can surprise you |
| Dropbox | Anything | Reliable, platform-neutral sync | Smaller free tier |
| Dedicated backup | Any of the above | Versioned, separate copies | Costs extra; set it up once |
A practical setup for most people and small businesses looks like this. Pick one cloud service and keep working files in it, so there is a single current copy rather than several. Turn on two-factor authentication that same day. Then add one genuine backup — either a paid backup service that keeps versioned copies, or an external drive you connect periodically and otherwise leave disconnected. The disconnected part is what defeats ransomware, because malware cannot encrypt a drive that is not plugged in.
Finally, test it. A backup nobody has ever restored from is a hope rather than a plan. Restore one file, once, and you will know whether the arrangement works before you need it to.
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Safety, accuracy and next-step checks
These guides explain what services are for and do not state current pricing or storage limits.
Points worth carrying:
- Sync is not backup. Deletions, corruption and ransomware propagate to every synced device. Keep a real backup as well — ideally one copy offline or in a separate service.
- Know your version history window. Most services keep deleted files and earlier versions for a limited period that varies by plan. Find out yours before you need it.
- Check share links carefully. “Anyone with the link” is genuinely anyone, forever, including anyone the link is forwarded to. Use expiring links and specific-person sharing for anything sensitive.
- Review shared folders periodically. Access granted years ago usually persists silently.
- Turn on two-factor authentication. A cloud storage account often holds identity documents, financial records and work files — a high-value target.
- Watch data costs. Initial sync of a large folder, and automatic photo backup, consume substantial data. Restrict to Wi-Fi where that matters.
- POPIA and data location. If you store personal information about others, where it is held and who can access it is part of your obligations.
- Check what leaves with an employee. Files in a personal cloud account are not recoverable by the business.
Frequently asked questions
Is cloud storage a backup? No. It syncs, which means it copies your mistakes too. Version history recovers many accidents but is time-limited. Keep a separate backup for anything important.
Which service should I choose? Usually whichever ecosystem you already use — Google Drive with Workspace, OneDrive with Microsoft 365, Dropbox if you want neutrality.
Are my files private? They are protected in transit and at rest by reputable providers, and the provider can generally access them unless you add your own encryption. The realistic risk is account compromise, not the provider.
What happens if I stop paying? Access to files above the free limit is usually restricted, and after a grace period data may be deleted. Download anything you need before downgrading.
How do I stop photos using all my data? Set backup to Wi-Fi only in the app’s settings. Automatic photo sync is the most common cause of unexpected mobile data use.