Follow one accidental deletion
Imagine a project folder containing an estimate and several photographs. You delete it on the laptop because you think it is an old copy. A synchronisation service may pass that deletion to the cloud and other connected devices. There were several visible copies, but they followed the same instruction.
A service recycle bin or version history may help. Check the retention period, account requirements and supported file types in the provider's documentation. Those protections can be valuable, but they have limits. Do not assume an item remains recoverable indefinitely because a restore button exists somewhere in the service.
Ask what your backup preserves
A backup should let you recover the required files from a particular earlier point. Decide which folders matter, how often they change and how much work you could recreate. A daily copy may suit one person's documents while being too infrequent for a shared project edited throughout the day.
Keep recovery copies away from the same failure that could affect the originals. An external drive left beside the laptop does not address theft of the whole bag. A drive permanently attached to a compromised computer may also be affected. An encrypted, disconnected copy and a separately located copy cover different problems; neither label alone guarantees that recovery will work.
Test with an unimportant document
Create a small test file, allow the normal backup to run, and confirm that the file appears in the backup's recovery interface. Change the test file and run the next scheduled backup. Then restore the earlier version into a separate folder. Open it and check its contents without overwriting your working copy.
This test reveals several details at once: whether the right folder is included, whether older versions exist and whether you have the necessary password or recovery key. Cloud-only placeholders need particular attention. Confirm that your chosen backup method actually includes their contents; a filename in a local folder is not evidence that all its data was copied.
Use synchronisation for keeping working files available across devices and a documented recovery process for getting them back. Write down the last successful backup, the location of the copies and how you would regain access if the laptop were unavailable. Repeat the small restore test after changing providers, folders or backup software.
