I finally added a second drive to my core then replaced 0710B2 with 0710B3 amd64. The new installation went smooth (the plutohome.com/new_installation.php scripts did timeout). I was nicely prompted on which hard drive to install on. During install the second drive was discovered and mounted as an internal drive. Everything I had working previously checked out.
So on to adding a new feature, mounting an nfs share. Interestingly the autodiscovery would find cifs shares but did not discover the nfs share. So simply added the share from pluto admin, Advanced, Configuration, Devices.
The share does show up under /mnt/device/36 and I can rip dvd to it and I can play the video from it. Interestingly, when choosing the file to play, the UI1 screen with the Play, Close, Delete button has the file location as: "File: Disk #2".
When I go to pluto admin, Files & Media, Media Files Sync, I can not find the nfs share. I can find the second hard disk under /home/public/data/videos/Internal HDD-CORE(sdb1). That's where I would expect a symlink to /mnt/device/36.
Any hints on what is responsible for creating the symlink?