Separate names with a comma.
I don't know zfs but my gut tells me the same as your saying about consistency.
I guess your second host don't have access to the datastore on your first host. You don't use a shared storage?
And how are your dns configured?
I got the same issue on my x1 yoga. 1803 also!
You could also just use a free Microsoft, Google or Dropbox account, if it's not too much data or very sensitive data it's the cheapest and best...