Those who keep another copy of their hard drive (or whatever other backup source) offsite, where is that? Your mommas house? A storage locker facility? At work?
I have offsite location as my cloud cloud backup. That’s basically, it.
My backup is like 2mm away from the main, not very secure I know.
I have another house, about 800 miles away… With another fairly identical setup. VPN at 1gb between. That’s for the replication. Also, have another site, with a VPN, and some rackspace there for periodic backups. My more critical stuff is put in an encrypted drive and left at another location. I like doing things myself and this works for me, but you may want to look into some bucket storage in the cloud, or just a USB drive you can carry offsite on occation.
Mom’s house. Old pc with a bunch of big usb drives on a high shelf in her basement. Open vpn point to point vpn set up so she can use my nfs and I can send backups.
Safe deposit box, 8TB external drive with encrypted backups of my NAS. Have the same drive locally too and swap them monthly. Current year and prior year folders also get cloud backed up to backblaze.