By Dan Fries
Former Apple Certified Consultant, 20+ years of Mac support
Cloud backup is your insurance policy against disaster. If your house floods, burns, or gets burglarized, your local backups are gone too. Cloud backup is the "1" in the 3-2-1 backup rule - your offsite protection that survives anything.
But not all cloud services are backup. Let me explain the difference and compare the real options.
Sync is NOT Backup
Dropbox, iCloud Drive, and Google Drive are sync services, not backup. If you delete a file on your Mac, it deletes from the cloud too. If ransomware encrypts your files, those encrypted files sync to the cloud. True backup services like Backblaze keep your files safe even if your Mac is compromised.
Quick Comparison
| Service | Price | Storage | True Backup? | Best For |
|---|---|---|---|---|
| Backblaze | $99/year | Unlimited | Yes | Full Mac backup |
| Acronis Cloud | $49.99+/yr | 250GB-5TB | Yes | All-in-one solution |
| iCloud+ | $0.99-9.99/mo | 50GB-2TB | Partial | Apple ecosystem |
| Dropbox | $11.99/mo | 2TB+ | No (sync) | File sharing |
| Google Drive | $2.99-9.99/mo | 200GB-2TB | No (sync) | Google users |
The Real Backup Options
Backblaze
The best value in cloud backup, period. Backblaze backs up your entire Mac - every file, every folder, external drives included - for one flat fee with no storage limits. It runs quietly in the background and just works.
Why I recommend it: Unlimited storage at $99/year is unbeatable. Most users have 500GB-2TB of data; competitive services would charge $120-240/year for that much storage. Backblaze includes it all.
- Unlimited storage for one computer
- Backs up external drives (when connected)
- 30-day file history (1 year with extended option)
- Restore via download or shipped hard drive
- 15-day free trial
Acronis True Image (with Cloud)
The all-in-one solution. Acronis combines local disk imaging with cloud backup in a single app. If you want one tool that handles everything - bootable clones AND cloud backup - this is it.
Trade-off: Storage is limited (250GB on base plan, up to 5TB on premium), while Backblaze is unlimited. Choose Acronis if you want simplicity; choose Backblaze + separate local backup if you have lots of data.
- Local backup + cloud in one app
- Ransomware protection included
- Disk cloning and imaging
- Cloud storage: 250GB to 5TB depending on plan
Sync Services (Not True Backup)
When Sync Services Make Sense
Sync services aren't backup, but they're great for file access across devices and collaboration. Many people use both: a sync service for working files, and a true backup for protection. Just don't rely on sync alone.
iCloud+
Best for Apple ecosystem users. iCloud syncs your Desktop, Documents, Photos, and more across all your Apple devices. It's convenient but not comprehensive backup - it won't back up your Applications, system files, or non-synced folders.
iCloud is good for: Photos backup, syncing files across Mac/iPhone/iPad, keeping Desktop and Documents accessible everywhere.
iCloud is NOT good for: Full system backup, recovering from ransomware, protecting files you don't keep in synced folders.
Dropbox / Google Drive / OneDrive
Great for file sharing and collaboration, not backup. These services sync specific folders to the cloud. If you delete a file locally, it's deleted from the cloud (though they offer limited recovery windows). They don't back up your full system.
Use these for: Sharing files with others, accessing work files from multiple devices, collaborating on documents.
My Verdict
Which Should You Choose?
- Best overall value: → Backblaze ($99/yr unlimited)
- Want one app for everything: → Acronis True Image (local + cloud)
- Apple ecosystem + Photos: → iCloud+ (but add Backblaze for full protection)
- Need file sharing/collaboration: → Dropbox or Google Drive (but add true backup too)
The Complete Setup
For bulletproof protection, here's what I recommend:
- Time Machine on an external drive (free, built-in) - for quick local restores
- Backblaze ($99/year) - for offsite cloud backup of everything
- iCloud/Dropbox (optional) - for syncing working files across devices
This gives you the full 3-2-1 backup: 3 copies (Mac + Time Machine + Backblaze), 2 media types (SSD + cloud), 1 offsite (Backblaze). Total cost: about $100/year plus a one-time $60-80 for an external drive.
Or simplify with Acronis: If managing multiple tools sounds like too much, Acronis True Image handles local and cloud backup in one app. Less flexible but simpler.
For more on local backup software, see my backup software comparison or the complete Mac backup guide.