Thinking of using #syncthing?
Consider using #unison instead. Unison is a bi-directional file-synchronization tool. It allows two replicas of a collection of files and directories to be stored on different hosts (or different disks on the same host), modified separately, and then brought up to date by propagating the changes in each replica to the other.
I'm using it now.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko