What do I backup

StuffI back up everything. I have a lot of time and memories invested in the data that I have curated over the years, and I have been bitten badly once and lost a massive amount of data. Now I’m self-hosting, I do the following:

I have a USB keyring that has the latest version of the Yunohost image. In the event of a disaster, I can boot from the USB keyring and restore the system. Two 2TB USB drives to backup to.

1. Symbolically linked to store all the Yunohost backups that are created from my cron job. 2. A backup of the mega important stuff using Restic. More on mythis YNHone serverlater. What does mega mean? This is a personal choice thing. Yes, it's all important, but gun to the head, what's really important given what you have at your disposal?