I’m curious if this or other tools can help me with the following use case: I have a Synology network attached storage.

What I want is a way for me to incrementally back up to Synology when I’m on my local network/VPN, while Synology maintains an encrypted cloud backup of my stuff. Alternatively when I’m outside of my network travelling, my laptop is backing up directly to the cloud with a way to sync that up with Synology.

In other words, I want to have a synchronized local and offline backup that works seamlessly whether I’m on my network or outside of it.

Is that a reasonable expectation? Does a tool like that exist?