This is the first of a three-part series on backing up family photos and videos. Part 1 covers the basic rule and why it exists. Part 2 will cover the hard-drive side of the setup, and Part 3 will cover the cloud side.
If you've got a decade or more of family photos and videos, and someone asked you right now where they all live, what would you say? Most people I talk to say something like "they're on my phone" or "they're in iCloud" or "I copied them to an external drive a couple years ago." Each of those sounds reasonable. None of them is actually a backup.
A backup isn't a copy of your photos. A backup is a copy of your photos that survives the thing that took out the original. That's a real distinction, and once you see it, you can't unsee it.
The 3-2-1 rule
People who do this for a living follow a guideline called 3-2-1, and it's been around long enough to be boring, which is exactly what you want in a backup strategy. The rule says you should have three copies of every photo, stored on two different kinds of storage, with one of those copies kept somewhere other than your house.
Each piece of that rule is there for a specific reason. Three copies, because one copy is the original and a second copy can fail right alongside it — drives die in pairs more often than you'd think, and a single bad sync can wipe out both at once. Two different kinds of storage, because a problem that hits one technology — a bad hard drive batch, a cloud provider outage, a software bug in the sync tool — probably won't hit the other at the same time. And one copy offsite, because a house fire, a flood, a break-in, or a ransomware infection doesn't care how many drives you owned if they were all sitting in the same room.
That's the whole rule. The rest of this series is just how to actually set it up without it being a hassle.
The three false-safety setups I see all the time
Before I get to the how, let me walk through what most people are actually doing today, and what each setup quietly doesn't protect against. None of these are stupid — they all feel safe in the moment. But each one has a specific failure mode that takes everything down.
Phone-only
The photos are on the phone, and that's it. Maybe they get synced to a laptop once in a while, maybe not. This is the most common setup I see, and it's also the one with the shortest distance between you and total loss. One drop in the lake, one stolen phone, one cracked screen that won't power on, one phone left in an Uber, and ten years of pictures are just gone. Phones are not storage. They're cameras that happen to hold their pictures temporarily.
iCloud-only (or Google Photos-only)
This one feels safer because the photos are "in the cloud," and for the most part the cloud is reliable. But you don't actually own the photos in iCloud — you own access to them, and that access depends on an account staying in good standing. An account lockout because of a forgotten password, a security flag, a billing card that expired while you were on vacation, or a family member changing settings without telling you, and the photos are sitting somewhere you can't reach them. They're also gone if the account itself gets compromised and the attacker deletes the library. One account, one point of failure.
One external drive in the desk drawer
This is the setup people feel best about, because they took the trouble to buy a drive and copy stuff to it. And it is genuinely better than the first two. But it's still one copy of the photos, in the same building as the originals. A house fire takes both. A burglary takes both. A flooded basement takes both. And ransomware, if the drive happens to be plugged in when it hits, takes both at exactly the same moment. One drive in one location is a copy, but it isn't a backup in the sense that matters.
Where this is going
If you recognized your own setup in one of those three, you're in good company — that covers almost everyone I know who hasn't specifically sat down and thought about this. The good news is the fix isn't expensive and it isn't complicated, and once it's in place you mostly stop having to think about it.
Part 2 will cover the hard-drive side of the setup — what to buy, how to organize it, and how to keep a second drive in sync without making it a weekly chore. Part 3 will cover the cloud side, including which services I trust for this and how to use them so that an account problem doesn't lock you out of your own pictures.
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