I am getting old, so I have my ideas 
But I am open to good advices 
I installed NS into standard VMs without problems and I am using it, but I like containers because they can mount host folder and that is very useful if you have VM that have a great amount of data.
I am planning to deploy a mail server that replaces an Exchange VM of 500 GB disk size (90% used), and a File server VM of 1.1 TB (85% used). Both created from other people under ESX.And they will grow …
A good backup strategy for so big VM isn’t simple.
I usually prefer little VM/CT for the “core” of the server and data into a different partition, bettter if I can use a folder into the host (I use NFS or SMB for KVM, but bind mount in CT are simpler and better).
If the problem is only the path, the question became: Is good and safe a simple
symbolic link of the folder or better to mount /var/lib/nethserver/… to another mount point?
Thanks, P.