Tried your suggested ls command.
First, it confirms my files are mounted and not local.
Then it took me a couple of minutes to absorb how nfs is set up here.
As you explained, my home directory is a link to my directory in the mounted volume. "ls /home" does not show the volume mount points as they are "dot" directories (doh!). Had I looked using -l, I could have figured this out.
I did see the "dots" in the output of the mount command, but did not think it through. I expected to see user names, so I did not interpret the output as volumes.
Interesting setup, it does make it easy for DH to move users from one machine to another.
Thanks for clearing this up for me.