[calamari4065]

As everyone else said, redundancy equals reliability. You can automatically sync to AWS or backblaze for offsite backups. Locally you'll want a second and/or third backup. My proxmox server syncs to a USB hard drive locally, then I manually take that to the office now and then to sync to a different drive I store in my desk. Critical stuff is also stored in a third drive I keep in a firebox at home.

You can automate as much or as little as you want, but you have to keep multiple copies around. You can't trust any single source. Individual drives fail, tapes go bad, cloud storage can disappear or become corrupt.

The 3-2-1 rule is a good place to start. Three copies on two different media, and at least one copy off-site