The main thing using tcp/ip communication method with a 3494 is that it
enables you to use more tape drives.
Each RS232 attached host means one less tape drive that may be put in the
atl.
Also if you have a network outage, you stand the chance of dropping your
connection to your atl.
We've run both, generally RS232 until I need to max out an environment with
tape drives.
I have no complaints with either.
Dwight