Interesting. I'm not sure that moving an image for a VM with Postgres is compatible with the goal of minimizing time/data but if upgrades are yearly or something, perhaps that is reasonable. It has been 9+ years since that post as well. But the full data will need to be included in the image if the goal is not requiring any (significant) tech support at each location, right? Unless the data that needs to be stored at each site is small, that seems a bit unlikely to be a feasible option.