Hmmmmmmmmmmmmmm,
I know that there were Macs and PCs on my old employer's network, but I never bothered to find out what file system they were formatted under or what drivers were required to permit both to access the same file system.
There is/are devices that allow USB drives to sit on an ethernet network without the intervention of a server, but once again, I cannot speak to the file system or drivers.
I suspect that you need to take this to a forum where the up-to-date computer geeks hang out.