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Cloud Storage as Cloud Backup: Four Safety Rules – Ask Leo!

I now have 1 TB of Microsoft OneDrive storage. How should that affect my backup strategy? Most of my data files are now on OneDrive; do those need to be backed up? Can I use OneDrive space as my “external hard drive” for backups of my other files? How about for image backups? Can/should Macrium Reflect put a system image onto OneDrive? Other advice re wise and safe use of cloud storage?

The availability of “cloud” or online storage has greatly expanded our options for keeping data both safe and accessible.

While it’s expanded our cloud backup options, it’s also expanded our ability to get it wrong. It’s now easy to think you are backed up when you are not, or to inadvertently expose yourself to additional risks.

Let’s review some rules about backing up, and about cloud backup specifically.

Your cloud storage is only one “place”, so files residing there and only there should also be backed up some other way. It’s important to consider what files you place in a cloud service, in case you get hacked. Encrypting those files is one way to protect yourself. It’s important to keep backing up locally, as internet speeds are not fast enough to treat online services as replacements for external hard disks. Above all, make sure you secure your online accounts — be they cloud storage or anything else important.

Cloud storage vs cloud backup?

We seem to use the terms interchangeably when in reality they’re two distinct things. The distinction matters.

  • Cloud storage is nothing more than an online service into which you can store and later retrieve files. Examples include OneDrive, Dropbox, and others, but can also include your favorite photo-sharing site, your own website, or just about any other online service that can hold files.
  • Cloud backup specifically uses cloud storage as a place to keep backup copies of your data. You may work on your files on your computer, but some process makes copies of those files and stores them securely online.

Cloud backup solutions typically fall into one of two buckets:

  • Tools like Dropbox and OneDrive, which are primarily multi-computer file replication and sharing utilities backing up files almost as a side effect of their utility.
  • Dedicated backup services mimicking traditional backup programs by backing up on a schedule using online storage rather than an external drive.

1. Back up your cloud data

This is by far the single most important rule I can offer you. If you remember nothing else, remember this:

If it’s in only one place, it’s not backed up.

I don’t care where you keep your data — on your computer, in the cloud, or somewhere else — if you have only one copy, then by definition, your data is not backed up.

So when you say, “Most of my data files are now on OneDrive; do those need to be backed up?” the answer is a resounding YES. OneDrive is only one place. Just because the files are stored in the cloud doesn’t mean you won’t lose them; you may just lose them for different reasons.

Yes, the service provider is most likely backing up its servers, but that does you no good if you accidentally delete a file — or worse, your online account gets hacked and the hacker deletes everything.

You must back up the data you keep in any online service, or you are at risk of losing all of it in an instant.

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2. Be careful what files you place in the cloud, and how

The answer to “Can I use OneDrive space as my external hard drive for backups of my other files?” is a qualified “yes.”

Cloud services are, in fact, great places to back up many files on your computer. In one operation, you get both backups (an additional copy of the data on your hard disk) and off-site backups (copies stored somewhere other than where your computer is located). That’s a very good use of cloud storage as cloud backup.

However, there’s a catch.

If your online account is compromised, it’s possible your files can become accessible to hackers or others. As I’ll discuss in a moment, that means the security of your online account is critical. It also means you may want to think twice about what files you place in the cloud.

Or, you might want to consider how you place them there.

One alternative that works well is to make sure the files you place in the cloud are encrypted before they’re put there. You can do that yourself, manually, or consider using a tool like BoxCryptor to encrypt your files automatically.

3. Keep backing up locally

Unless you have an amazingly fast internet connection, the cloud is not a viable solution for image backups of your computer.

However, having complete image backups of your computer remains key to being able to recover quickly from a variety of disasters. You need to keep doing them.

Why aren’t cloud backups ready for image backups? It’s simply an issue of size and time. Image backups are large — often hundreds of gigabytes. Even on a fast internet connection, it could take days or weeks to upload the backup to online storage. Often image backups are created and updated faster than they could be uploaded to a cloud service.

So while cloud backup using cloud storage can be a very convenient and helpful addition to an overall backup strategy, it’s in no way a replacement for local backups, nor is it an appropriate place to put your image backups.

4. Secure that account

The security of any online account is important, but it becomes even more important for the account you use for cloud backup.

It’s too easy not to take your online account security seriously.

For any account into which you place important information — not only cloud backup, but email accounts, photo-sharing accounts, social media, and others — it’s critical that you use as many of the techniques at your disposal to keep it as secure as you can manage. That includes:

You get the idea. It’s basic internet security we should all be doing anyway, but it’s easy to overlook and easy to get wrong.

When it comes to important accounts, like an account you use for cloud backup, then additional measures — like perhaps two-factor authentication — might also be called for.

If you found this article helpful, I’m sure you’ll also love Confident Computing! My weekly email newsletter is full of articles that help you solve problems, stay safe, and give you more confidence with technology. Subscribe now and I’ll see you there soon,


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This post was written by Leo Notenboom and was first posted to

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