As long as the off-site isn’t the same location or method of access, that’s generally fine. Essentially, you want to make sure you have a way to get at the data no matter what happens.
Fire/damage on location: pull off-site such as online backup
Internet down: pull hardware based backup
Go on…
3 backups: 2 different places/media on-site 1 off-site
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Yes, but the OP went 3 months without it and then messed up during setup
What about 2 offsite and 1 onsite? That’s been my approach, mostly due to storage limitations onsite.
As long as the off-site isn’t the same location or method of access, that’s generally fine. Essentially, you want to make sure you have a way to get at the data no matter what happens.
Fire/damage on location: pull off-site such as online backup Internet down: pull hardware based backup
Contingency plans, essentially
https://www.backblaze.com/blog/the-3-2-1-backup-strategy/
This person lost 3 months of work because they couldn’t be assed to backup their data despite having three months to do so.
Never trust an OS, or a piece of software, to protect you. Protect yourself.