This is why I use a local NAS for offline backups.

This is good but not really enough. You need another backup to cover the case where this backup is burned to a crisp when your house catches fire. And that second backup needs to be in another geographic region to guard against regional disasters such as meteor impact, super volcano eruption (possibly not a concern for you but it is for me), etc.

	▲	koonsolo 3 days ago \| parent \| next [-]
		The NAS backup is already in a different location, no? Or do you want to take into account when both cloud and your NAS catch fire at the same time?
	▲	EmuAGR 3 days ago \| parent \| prev [-]
		Well, if a meteor impacts and vaporises my entire region, my least concern would be my data.