"virtual drive" on mac?

Question

I have a RAID and XSAN 1.2, and I want to create a "virtual volume" similar to using the MOUNT command in Windows, where a volume (aka "drive letter" in Windows) actually points to a folder within a real volume.
I've been looking into Symbolic Links and /etc/fstab.
But it's all new to me and I don't want to mess things up, esp with XSAN and all.
Can anyone explain how I might use one of these methods to make a folder within one of the volumes on the RAID appear on the desktop/finder as an actual volume?
I was thinking to create a symbolic link within the /volumes folder which points to the "destination" folder. Let's say one of the RAID volumes is called "Media", which has a folder called "A" at the root, and a folder called "B" within "A" ... can I create a symbolic link in /volumes like this:
cd /Volumes
ln -s /Volumes/Media/A/B/ VolumeB
I would hope this would make the Finder "see" a new volume called "VolumeB", which would actually reside within "Media". But is this dangerous?
Or is there a way to do it in the fstab file?
I would like my virtual volume to appear on the desktop/finder, specifically to be visible to Avid as another usable volume. And I want this volume to only appear on the machine where I set it up; that is, I don't want it to appear to any other machines connected to the RAID.
I am completely new to Unix/terminal, so any guidance is greatly appreciated. (Assume I'm an idiot!)
thanks!

Answer 1

I have found a solution, but I am hoping there's a more elegant way to do it.
I installed SharePoints on each machine; then set up a unique share on each machine, with SMB access, so that each machine had a share to its own private folder on the RAID; then enabled Windows Sharing. Then I mount the so-called remote share through the same machine, by doing Connect to SMB://thismachine. The "share" appears as a network volume, even though the machine is sharing "with itself."
As far as I know, SharePoints is just a GUI front-end to simplify doing certain things that can be done with more expert knowledge of OSX/Unix. So is there a way to do this without SharePoints?
And is there a way to do it without "faking" as a share through SMB? I just wonder if that will reduce performance/bandwidth from the RAID.
I suspect there is a way to get that "network volume" to appear without going through "loops." To somehow get that mountpoint (?) to bind directly...
The AUTOMOUNT command looked promising, but my Unix isn't good enough to make sense of the jargon in the manual.
A friend said on Linux you use something with "--bind", but that doesn't work on OSX-flavor Unix.
P.S. to Don: Yes, to all your questions. You got it. And yes, the file in X appears in the corresponding directory. X is just a volume that points to a folder within an actual volume, where that folder is the "root" of X.