Is I/O faster with UNIX or VMS?

[Randall R. Hammon]

I was asked yesterday whether a dr11-w board on a Vax 750 could do I/O( the 
words used at me were "bulk data transfers" ) faster with VMS 3.X or UNIX 4.2.
I some ideas that lead me to "believe" that UNIX could do it faster, but I
don't have the necessary facts to back that up. I believe that with a good device
driver implementation UNIX should win, because UNIX drives Vax hardware so myuch 
harder than VMS, and doesn't have as much system overhead.
What do you think?
Thanks in advance for responses,
Randy Hammon