Where is the data stored on an Etherpad collaborative pad?
For example, lets say Cloudron is setup on a VPS. Three people are collaborating on the pad. Each has a copy of the most recent edits. What happens if the VPS goes offline? Would anybody be able to reach the document anymore?
What would happen if I started creating a document on the Etherpad on a mobile device, and then the mobile device was lost/fell into the sea/was destroyed. Would other people be able to continue working on the document? They would, wouldn't they?
Etherpad stores the documents and its data in the mysql database on your VPS. While editing, the clients sync their changes mostly real-time to the server.
I am not fully sure what happens if you are offline and edits cannot be submitted to the server, for some time, then later the client gets online again, while the document already has changed by other clients on the server. Essentially for such more complex conflict resolutions, you have to ask upstream or see what their docs have to say about this.