If data does not exist in three seperate places, it does not exist.
In other words, you should have data in three seperate places to prevent losing it.
We generally recommend all of the following in one form or another:
This is the living data that you interact with on a daily basis. It exists by default.
This is what most people imagine as a backup. An example would be an external drive plugged into your computer with software creating an archive backup onto it. It shold only be connected when you are actively making a backup.
This is the final piece of the puzzle. It is often implemented with a 3rd party service that copies data from your computer to a server on the internet.
With all three of these systems in place, if any two become damaged, the third can still be used to restore your data to working order.
That being said, most people do not follow these rules, and lose data. If you are among them, don’t despair yet! We have experience with pulling data back from the brink of destruction!
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