My main storage is a mirrored pair of HDD. Versioning is handled here.

It Syncthings an “important” folder to a local back up only 1 HDD.

The local Backup Syncthings to my parents house with 1 SSD.

My setup can be better, if I put the versioning on my local backup it’d free space on my main storage. I could migrate to a dedicated backup software, Borg maybe, over syncthing. But Syncthing I knew and understood when I was slapdashing this together. It’s a problem for future me.