For database servers there are only a few drive letters or mounts that I want to backup.  I don't want to have a custom dataset for each server and I don't want to have a custom avtar.cmd file on each server.  For linux/unix hosts I want to have a dataset that excludes all mounts, then includes /, /boot, /home for example.  For windows I want to have c: drive only.  I've played with the syntax but can't find the magic incantation to exclude all drives or mount points.  Am I asking too much or is this possible?