Best Cloud Backup Services: We Read All the Fine Print

For most people, Backblaze is the best cloud backup service: it backs up everything on one computer automatically, and its defining feature is that you cannot really misconfigure it. If you have several computers or want phones and a NAS covered too, IDrive is the stronger pick. Privacy-focused users should look at Proton Drive, and people who mostly want files synced across devices (which is not quite the same thing as backup) should look at pCloud. Carbonite still works, but it has been passed by the others in most ways that matter.

That is the short answer. The longer answer is worth your time, because cloud backup is an industry built on fine print. The words "unlimited," "backup," and "archive" all mean something slightly different than you would assume, and the differences only bite you on the day you need your files back. We read the terms so you do not have to, in the proud tradition of a site whose name we render as read the f**king manual.

Backup vs. sync: the distinction that ruins vacations

Before comparing services, you need one concept nailed down, because it is the single most common way people lose data while believing they are protected.

A backup service keeps an independent copy of your files. If your laptop dies, the copy survives. If you delete a file by accident, the copy survives (at least for a retention window).

A sync service (think of the default behavior of consumer cloud drives) mirrors your files across devices. That feels like backup, right up until the moment it is not. Delete a folder on your laptop and sync helpfully deletes it everywhere. Ransomware encrypts your documents and sync faithfully uploads the encrypted versions on top of the good ones. Sync replicates your mistakes at the speed of your internet connection.

The services below sit at different points on this spectrum. Backblaze, IDrive, and Carbonite are true backup tools. pCloud and Proton Drive are sync-first tools that can be used as part of a backup strategy if you understand what they do. Versioning (the ability to roll a file back to how it looked last Tuesday) is what rescues a sync tool from being a mistake-amplifier, so pay attention to how each service handles it.

Caution: Do not treat a sync folder as your only backup. If a file exists in exactly one logical place, even a place that is mirrored to the cloud, one bad deletion or one ransomware infection can take out every copy at once. Real backup means an independent copy that does not instantly obey your worst commands.

Backblaze: the one you cannot mess up

Backblaze has one job: back up the entire computer it is installed on. You install it, it finds your files, and it uploads them. There is no picking folders, no wondering whether you remembered to include the desktop, no quiet exclusion of the one directory that mattered. It backs up by exclusion (a short list of system junk it skips) rather than by inclusion, which is exactly the right default for humans.

The strengths are real. Setup takes minutes. The client is lightweight and stays out of your way. Restores can be downloaded, or you can have a physical drive shipped to you, which matters more than you think when you are trying to pull an entire computer's worth of data through a home internet connection.

Now the fine print, because Backblaze has some. It backs up one computer per license, so a household of three laptops needs three licenses. External drives are covered, but only if you plug them in regularly; leave a drive disconnected too long and its backup ages out. Version history has a default retention window, with longer retention available as an option, and that window is worth extending if you are the type who discovers mistakes months later. And network drives and NAS boxes are not covered by the personal product at all.

None of that is scandalous. It is just the sort of thing you want to know before, not after. For a person with one main computer who wants to stop thinking about backup, Backblaze remains the recommendation we hand out most often.

IDrive: the Swiss Army knife

IDrive takes the opposite philosophy. Where Backblaze does one thing with no options, IDrive does nearly everything with many options. One account covers multiple computers, phones, tablets, and even network drives, all counting against a single pool of storage.

That flexibility is the pitch, and for the right household it is compelling. A family with two laptops, a desktop, and a NAS can cover the lot under one roof. IDrive keeps multiple versions of files and, in a genuinely useful design decision, does not count older versions against your storage quota in the way you might fear. Deleted files also stick around in the archive until you consciously clean them up, which is forgiving in exactly the way sync services are not.

There are trade-offs. The interface shows its age and its ambition at the same time; there are a lot of screens, and the first-run experience asks you to make decisions Backblaze would have made for you. Because storage is a fixed pool rather than unlimited, you have to know roughly how much data you have, and you have to notice when you approach the ceiling. IDrive also offers a physical drive service for both seeding your first backup and receiving restores, which is a real advantage on slow connections.

Our take: IDrive is the best choice when your situation is plural. Plural computers, plural platforms, plural family members. If your situation is singular, its flexibility just means more settings to get wrong.

Carbonite: the familiar name that stood still

Carbonite was, for many people, the first cloud backup brand they ever heard of. It still does the core job: continuous, automatic backup of your computer's personal files with a simple traffic-light indicator telling you whether you are protected.

The problem is what surrounds the core. Video files are not always included automatically depending on plan tier, which is a nasty surprise for anyone with a phone full of family clips. External drive coverage likewise depends on tier. The desktop client feels dated next to the competition, and the restore experience is serviceable rather than pleasant.

Carbonite's genuine strength is approachability for non-technical users. The green dot on a backed-up file is a piece of interface design that reassures a certain kind of user better than any dashboard. If you are setting this up for a relative who will never open the app again, that visible reassurance has value.

But recommending Carbonite over Backblaze requires a specific reason, and in our experience that reason rarely materializes. It is not a bad service. It is a service that got lapped.

pCloud: sync-first, with a lifetime twist

pCloud is not primarily a backup service, and it is honest about that. It is a cloud drive: your files live in the cloud, sync across devices, and can be shared with links. What earns it a place in this comparison is a set of features that make it more backup-capable than most sync services.

First, it offers real file versioning with a meaningful retention window, extendable if you want more. Second, it has a backup function that can mirror specific local folders one-way into the cloud, which behaves much closer to true backup than ordinary sync. Third, it is one of the few reputable services sold with a one-time-purchase option instead of a subscription, which appeals to people who are tired of renting their digital life.

The caveats are structural. Client-side encryption (where even pCloud cannot read your files) is a separate paid add-on rather than the default, and files inside that encrypted vault lose some convenience features. And because pCloud is sync-first, the mental model traps we described earlier apply: a deletion syncs, and you are relying on the version history and trash retention to save you.

pCloud is the right tool for someone who wants their working files available everywhere and understands that a separate true backup is still wise. It is the wrong tool as a family's only safety net.

Proton Drive: privacy as the headline feature

Proton Drive comes from the same Swiss company behind the well-known encrypted email service, and it inherits the family trait: end-to-end encryption by default, for everything, with no add-on to buy. Proton cannot read your files, cannot mine them, and cannot hand over their contents in readable form, because it does not hold the keys.

For a growing group of people, that is the whole decision right there. If your backup includes tax records, medical documents, a journal, or anything else you would not tape to a lamppost, default encryption where only you hold the keys is a materially different offering from "encrypted in transit and at rest," which is what most services mean when they say "encrypted."

The trade-offs follow directly from the encryption. Zero-knowledge design means that if you lose your credentials and your recovery method, Proton genuinely cannot reset your way back into your files; you should treat account recovery setup as a mandatory step, and a good password manager helps enormously here (our guide to the best password managers pairs naturally with this). The apps are newer than the competition's and the feature set is still filling out, particularly around automated whole-computer backup, where Proton Drive is more of a secure file store than a set-and-forget backup agent.

Proton Drive is our pick for the privacy-first user, with the caveat that you must hold up your end: guard your credentials like they are the only key to a safe, because they are.

The comparison at a glance

Read the table as a starting point, not a verdict. "Best for" is doing a lot of work in that first column, and your household probably matches more than one row.

How to actually choose (and set it up right)

Here is the process we walk friends and family through. It takes an evening, most of which is upload time you can sleep through.

1. Count your computers and phones. One computer points you at Backblaze. Two or more devices, or a NAS, points you at IDrive. Privacy as the top priority points you at Proton Drive. This one question settles most cases.
2. Measure your data before you commit. Check how full your drives actually are, including any external drives you care about. Unlimited plans make this irrelevant; pooled-storage plans make it the whole ballgame. People routinely underestimate their photo libraries by half.
3. Decide what the cloud copy is for. If it is disaster recovery (fire, theft, dead drive), you want a true backup service. If it is access-everywhere convenience, a sync service fits, but then something else must be your disaster copy. Write the answer down; it clarifies every later decision.
4. Install, then verify the file selection. Even on Backblaze, spend five minutes confirming your critical folders are included. On IDrive and pCloud, this step is where protection actually gets defined, so do not rush it. Look for the one folder you assume is covered but is not; there is always one.
5. Turn on versioning and extend retention if offered. Version history is the feature that saves you from yourself, not just from hardware. Longer retention windows are usually cheap insurance. Ransomware in particular is only survivable if you can roll back to versions older than the infection.
6. Let the first backup finish completely. The initial upload can take days on a typical home connection. Leave the computer on and awake overnight. A backup that is 80 percent complete has a talent for missing exactly the files you needed.
7. Do a test restore of real files. Pick a folder, restore it to a new location, open the files. This is the step everyone skips and the step that matters most. A backup you have never restored from is a hope, not a plan.
8. Keep a local backup too. Cloud plus a local external drive is the grown-up setup, and our full walkthrough on how to back up your computer covers the local half. If that external drive misbehaves when you plug it in, we have also written about what to do when an external hard drive is not showing up.

Fine print that actually bit people

A few recurring clauses deserve their own flashlight, because these are the ones that generate the sad emails.

"Unlimited" has edges. Unlimited storage offers are generally honest about capacity but bounded in scope: one computer, connected drives only, no network storage. The limit is not how much, it is what from.

External drives have attendance requirements. Services that back up external drives typically require the drive to be seen periodically. A drive that lives in a desk drawer between annual photo dumps may quietly fall out of protection.

Retention windows apply to deletions too. "We keep old versions for a set window" also means "we forget files you deleted after that window." If you delete a folder and only notice past the window, the cloud copy is gone as well. Longer retention options exist for a reason.

Archive is not backup. Some services distinguish files that are only in the cloud from files backed up from your device. If you delete the local copy and rely on the cloud one, you are back down to a single copy of that file, which is where this whole problem started.

Bandwidth is the hidden constraint. Uploading a large library takes days; restoring it takes just as long. Services that ship physical drives for restore (Backblaze and IDrive) hold a practical advantage that never shows up on a feature checklist until the day it is the only thing that matters.

Frequently asked questions

Is cloud backup enough on its own, or do I still need an external drive?

You want both. The standard advice is three copies of your data, on two different kinds of storage, with one copy off-site. Cloud backup is the off-site copy; a local external drive gives you fast restores and protection when the internet or the provider has a bad day. Either one alone leaves a gap.

Which cloud backup service is best for photos?

Any true backup service handles photos fine, since they are just files. The practical concerns are total size (photo libraries are usually the biggest thing people own) and retention, so an unlimited or generously pooled plan matters. Backblaze for a single computer and IDrive for multiple devices are the picks we default to.

Can cloud backup protect me from ransomware?

Yes, with conditions. The service needs version history that reaches back further than the infection, and the backup must not simply sync the encrypted files over your good ones as the only copy. True backup services with solid versioning, like Backblaze and IDrive, are built for exactly this recovery. Pure sync without versioning is not.

How long does the first backup take?

Expect days rather than hours for a typical full computer over a home connection, and plan accordingly: leave the machine on, prevent sleep, and let it grind. Some services offer to seed the first backup from a shipped physical drive, which collapses the timeline dramatically for large libraries.

Is Proton Drive a full replacement for Backblaze?

Not yet, in our view. Proton Drive offers stronger privacy through default end-to-end encryption, but Backblaze offers a more complete set-and-forget whole-computer backup. Some people run both: Proton Drive for sensitive documents, a traditional backup service for everything.

What happens to my files if I stop paying?

You get a grace period, then the provider deletes your data; the exact window varies by service, and it is one of the fine-print items worth checking before you commit. The practical takeaway is to never let a cloud copy be your only copy, so that a lapsed card on file is an annoyance rather than a catastrophe.

The setup that lets you stop thinking about this

Here is the honest end state. Pick one true backup service today: Backblaze if you have one computer, IDrive if you have several devices, Proton Drive if privacy outranks convenience for you. Install it tonight, verify the folder selection, and let the first upload run. This weekend, add a local external drive backup as the second layer. Next month, spend ten minutes doing a test restore, then put a recurring yearly reminder in your calendar to do it again.

That is the whole system. It is boring, it is roughly one evening of actual effort, and it converts "my laptop died" from a life event into an errand. The fine print stops mattering once you have chosen a service whose fine print you have actually read, and now you have.