Sounds like you’ve got quite the esoteric setup, hehe :)
My personal solution isn’t exactly small as I have two identical four-disk NAS servers which operate with one as primary and the other as a read-only mirror of the primary. For off-site I don’t have an automated solution but just backup onto external every so often and leave it with a family member.
A good solution could be as simple as a raspberry pi with an external SSD at a friend or family’s place, and then make that accessible via VPN to your home network.
Sounds like you’ve got quite the esoteric setup, hehe :)
My personal solution isn’t exactly small as I have two identical four-disk NAS servers which operate with one as primary and the other as a read-only mirror of the primary. For off-site I don’t have an automated solution but just backup onto external every so often and leave it with a family member.
A good solution could be as simple as a raspberry pi with an external SSD at a friend or family’s place, and then make that accessible via VPN to your home network.