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← Security & recovery
03 / Foundations · 2 min

A backup earns its name when it restores

A backup is a recoverable copy from another point in time. Synchronisation alone may also copy mistakes.

In 30 seconds

  1. Keep copies outside the same failure path.
  2. Decide how much recent work you can afford to lose.
  3. Test recovery with a harmless sample and record the result.
Make it concrete

Create a practice note, back it up, edit it and restore the earlier version into a separate folder. Compare the contents.

  1. 01Copy
  2. 02Separate failure
  3. 03Restore
Concept diagram · simplified for learning
Check your understanding

If deletion instantly syncs to every device, is that alone a complete backup strategy?

Learning paths →

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Sources reviewed: 13.09.2026