Have You Backed Up Your Data?

Yes, that question is coming from me, a person who last made a complete backup sometime in 2025. I did a partial backup last month, so apparently I am slowly crawling toward responsible adulthood.

You have probably heard the advice before. Back up your data. Do it regularly. Protect yourself against data loss. It is one of those sensible things everybody agrees with and then quietly ignores until a hard drive dies, a phone disappears, or someone clicks something they absolutely should not have clicked.

So let’s talk about backups without turning this into an IT certification course. I tried not to use overly technical language, but you may still find parts of this article painfully boring. It’s good for you, though. Unfortunately, useful things have never guaranteed entertainment.

What Is a Backup?

A backup is simply another copy of something you don’t want to lose. That’s basically it. If your computer contains ten years of family photos and you copy them somewhere safe, you have a backup. If your phone disappears into a toilet, gets stolen, or simply decides to turn its lithium battery into a surprisingly effective little fireplace, you should still be able to recover your photos, documents, contacts, and other important stuff from somewhere else.

And by “device,” I don’t mean only a desktop computer. Your data might be sitting on a laptop, phone, tablet, USB drive, external drive, website, email account, social media account, or some online service you barely remember signing up for in 2014.

People sometimes assume that because something exists on Google, Facebook, Dropbox, Instagram, Microsoft, WordPress, or another online service, it will live there forever. That is wonderfully optimistic.

Accounts get suspended or hacked. Services close. Files get deleted. Companies change their rules. You can lose an old email address or simply forget how you originally signed in. If something matters to you, keep your own copy.

Synchronization Is Not the Same as a Backup

Google Drive, OneDrive, Dropbox, iCloud, and similar services can automatically synchronize files between your computer and the cloud. That’s convenient, but synchronization and backup are not quite the same thing.

Imagine accidentally deleting an important folder. Your synchronization software may immediately and very efficiently synchronize your stupidity everywhere. Lovely. The same can happen if malware damages or encrypts files. Those damaged versions may synchronize too.

Many cloud services let you recover deleted files or previous versions, but those recovery features have limits. A proper backup should ideally give you another copy that isn’t instantly changed whenever something happens to the original.

The Simple 3-2-1 Backup Rule

There is a commonly recommended idea called the 3-2-1 backup rule. The name makes it sound more technical than it actually is. The basic idea is to keep three copies of important data, using at least two types of storage, with one copy somewhere else.

For example:

• Original files on your computer
• A copy on an external hard drive
• Another copy in cloud storage

You don’t need three carefully protected copies of every meme, ancient installer, and PDF invoice from 2017. But for things you genuinely cannot replace, one copy simply isn’t enough.

What Should You Back Up?

Start with anything that would make you swear loudly if it disappeared tomorrow. That might include photos, videos, documents, scans, financial records, work files, email archives, contacts, music, websites, databases, password-manager data, important conversations, and anything stored only inside an online account.

Some things are easy to replace. Lose a downloaded movie and you’ll probably be annoyed for five minutes.

Lose the only photographs you have of someone who died ten years ago and downloading them again may prove slightly more difficult. Priorities matter.

Cloud Backup

Cloud storage means your files are stored on computers operated by another company. Google Drive, Microsoft OneDrive, Dropbox, Apple iCloud, and similar services are common examples.

The main advantage is convenience. Files can upload automatically, you can access them from several devices, and if your computer gets stolen or your house burns down, your cloud copy will hopefully be sitting somewhere far away from the barbecue.

There are, however, a few catches. First, you will probably pay another subscription once you need a reasonable amount of storage. Excellent. Another monthly payment can join Netflix, Spotify, Adobe, Microsoft, your phone company, your hosting provider, and the growing army of companies slowly nibbling your bank account to death.

You also need continued access to the account. Your password, recovery information, and preferably two-factor authentication need to stay current.

Then there is billing.

Imagine you bought cloud storage five years ago using a credit card. The card expires. Meanwhile, you switched email addresses and no longer check the one connected to your cloud account.

The payment fails. Warnings go to the old email address. You see none of them.

Perhaps there is another warning inside the app, but you haven’t logged in recently. Maybe the provider gives you a grace period or reduces the account to its free storage allowance. Exactly what happens depends on the company.

Then one day you finally remember your cloud backup and get to discover exactly how forgiving that company’s billing policy is.

Do not assume that an SMS will magically rescue you. Keep the email address connected to important services current, check your payment method occasionally, and don’t make one cloud account the only home of something irreplaceable.

Privacy and Cloud Storage

Cloud providers generally use encryption to protect data, but “encrypted” does not automatically mean “nobody except me can ever see this.”

Ordinary cloud storage isn’t always the same as end-to-end encrypted storage where only you control the key. Depending on the service and its settings, the provider may technically be able to access some information. Companies may also have to provide data when presented with valid legal demands.

So check the privacy features of the service you actually use rather than assuming a little padlock icon means complete privacy. And if a folder contains something you really don’t want to explain to another human being, ordinary cloud storage might not be the best place to assume absolute secrecy.

Local Backup

Local backup means copying files onto physical storage you control, usually an external hard drive, SSD, USB drive, another computer, or home network storage. For most people, an external drive is the simplest option.

Connect it, copy your important files, check that the files actually arrived, then disconnect it.

That last part matters. If a backup drive stays permanently connected, ransomware, malware, electrical problems, or your own creative clicking can potentially damage both the computer and the backup.

An external drive sitting unplugged in a drawer has one impressive security feature: ransomware cannot reach into the drawer. Yet.

Local storage also means no monthly subscription. You buy the drive and it belongs to you. Nobody emails you three years later to announce that your Premium Platinum Storage Experience now costs 28 percent more because apparently storing bits became luxurious.

But local storage has weaknesses too. Drives fail, get stolen, disappear, or get destroyed together with your computer in a fire or flood. Particularly important data should therefore exist somewhere else too.

I personally still prefer old-school hard drives for offline backups: spinning magnetic platters stored somewhere cool and dry, ideally in an antistatic bag with a little silica gel to control moisture. A good HDD may still be readable after 5, 10, or more years, but important backups should be checked occasionally and eventually copied to newer storage.

SSDs, including NVMe drives, use flash memory instead. They are fast and have no moving parts, but very long unpowered storage is less predictable, especially as flash wears. For something going into a drawer for years, I still prefer the old spinning disk.

Modern technology isn’t automatically better at everything. Sometimes it simply gives us newer disadvantages.

Should You Encrypt Your Backup?

Sensitive backups should be encrypted. That way, somebody who steals your drive cannot simply plug it into another computer and start browsing your files.

But encryption creates another responsibility: you need the password or recovery key.

Lose that and your backup may turn into an extremely sophisticated collection of useless mathematical noise.

Protect the recovery key carefully. If you store the password together with the encrypted drive, the encryption becomes mostly decorative.

How Often Should You Back Up?

There is no perfect backup schedule. It depends on how often your data changes and how painful losing it would be. If you create important files every day, back them up frequently. If a folder contains vacation photos from 2019 and hasn’t changed since, there is no reason to copy it every Tuesday until you die.

Published articles, old photos, music, and videos may need only occasional backups once they’re safely stored. Email and active work change constantly, so weekly or even daily backups make more sense.

I sometimes back up my email archive only every six months. Clearly, I am not presenting myself as the model student here.

A reasonable schedule might be:

• Daily for critical work

• Weekly for active projects and important email

• Monthly for personal files and photos

• After major changes to websites or important projects

• Once for files that genuinely never change

Automatic backups help because human beings are extremely talented at saying, “I’ll do it tomorrow.” I love the word tomorrow.

Don’t Forget Your Phone

For many people, the phone now contains more irreplaceable personal information than the computer. Photos, contacts, messages, notes, recordings, authenticator apps, and documents may exist only there. Android phones and iPhones provide built-in backup and synchronization features, and you should use them.

But particularly important files should still exist somewhere outside that single phone account.

If fifteen years of your photographs exist only inside one online photo service, you have entrusted your personal history to one company, one account, and a collection of systems you have absolutely no control over.

Back Up Your Online Accounts

Many online services let you download or export your data. Use that feature occasionally for services containing material you created, including email, social media photos, blog posts, videos, contacts, cloud documents, and business information.

You don’t need to download your entire digital existence every Friday afternoon. But if you spent ten years creating something online and the only copy belongs to the company hosting it, that company currently has more control over your history than you do.

I don’t particularly like that arrangement.

Passwords Deserve Their Own Backup Plan

Even if you don’t care about backing up anything else, protect your passwords and account recovery information.

Browsers such as Chrome, Edge, Firefox, Brave, and Safari can remember passwords, but I wouldn’t make a single browser profile the only home for every account credential you possess.

A password manager is a better solution for many people. You remember one strong master password while it stores the rest inside an encrypted vault.

Also protect your two-factor authentication recovery codes, account recovery keys, backup email addresses, and password-manager recovery information.

There is one trap worth mentioning. Browsers and password managers can often export passwords into a CSV file, which is usually readable as ordinary text. Yes, all your lovingly protected passwords can suddenly be sitting inside something called passwords.csv.

If you export one for backup purposes, immediately move it into encrypted storage and remove the unprotected copy. Do not leave it in your Downloads folder until 2030.

Check Your Recovery Information

Every few months, check the accounts you depend on. Is the email address still yours? Is your phone number current? Does the recovery email work? Has the payment card expired? Do you still have access to your two-factor authentication method?

People change phones, banks, email addresses, and phone numbers. Online accounts have an annoying habit of remembering none of this unless you tell them.

The perfect backup stored in the perfect cloud account isn’t particularly useful if you can no longer log in.

Test Your Backup

A backup isn’t much of a backup if you cannot restore anything from it. Every now and then, open it and check that important files are actually readable. Restore a few files. Make sure encrypted storage still opens and the external drive still works.

People occasionally discover that their automatic backup has been quietly failing for months. Discovering this after the original drive dies adds a special theatrical quality to the disaster.

Why Do Any of This?

Because devices fail. Hard drives die. SSDs die. Phones get dropped. Laptops get stolen. People delete the wrong folder. Accounts get hacked. Malware damages files. Ransomware encrypts computers. Cloud subscriptions expire. Payment cards expire. Email addresses change. Online services disappear. And sometimes nothing dramatic happens at all. A storage device works perfectly for years and then one morning simply decides that its career is over.

I’ve personally been proudly irresponsible with backups more than once. Then one of my hard drives suddenly stopped working. There was no heroic warning. No helpful Windows message saying, “Milan, perhaps this would be an excellent moment to reconsider your life choices.” The drive simply stopped giving me access to data I actually cared about.

At that point there wasn’t much technical philosophy left to discuss. I looked at the dead drive, thought about the backup I hadn’t made, and all I could say was:

Fuck. It sucks.