On my machine, I have a shared folder called C:\DataVolume. I want to map that to the E: on this same machine. I know I can map a drive letter similar to how I would do it on any other machines on my network, but is that efficient? Will my machine detect that even though it's a "mapped network drive", it is still a local drive? Or will all traffic go through my switch and back to my machine?

Would this be a good place to use 127.0.0.1?