WebAS JAVA question: More WebAS vs. more server processes

Hello,

We plan to install a "big" SAP Netweaver Portal system for ESS, MSS, ... After sizing the system, we need to fit it on the available hardware, but we don't know which is the best approach for better using this HW.

Is there any advantage on installing more than one WebAS for the same SAP system on the same host, instead of installing just one instance with more server processes on it? Which is the best approach?

Thanks in advance,

jmiturbe