Learning to not overengineer backups

For the longest time my backup strategy consisted of two parts: Personal files are automatically synced with OneDrive on my PC and laptop. My NAS mirrors some of that data and occasionally exports it to an external HDD. And then every few months I rotate that external HDD with a different one and store the other at my parents. So for most of my data I did actually have 3 copies on 2 different media types with 1 (or 2 even) stored off-site. But when I upgraded my NAS to 4 TB drives I couldn’t backup all the data anymore since my external HDDs were only 3 TB. So those backups fell out of use. It’s been many years since I last did a proper backup and I still get the “data backup task failed” notification every Sunday at 3 am.1 But since my most important files (documents and photos) were still on OneDrive I wasn’t that worried about backups. Sure I should probably try to fix this eventually, but if my phone or PC or laptop dies I at least won’t lose anything important – it’ll only be…