I am currently attempting to degoogle and at the same time move to an entirely self hosted ecosystem.

I’ve set up a NAS and have syncthing to deal with the dropbox/gdrive type things and have backup on a raid disk. What I am looking for now is a backup solution that can backup to my nas and in the future a remote device - probably to another nas at a family member’s hous

Can anyone recommend a backup solution for this?

Technically I am not looking to degoogle as I don’t gave a Google solution for this- but I guess I’m looking for a self hosted alternative to GCP backup.