I am planning on migrating 600 exchange users on 5 exchange servers to one groupwise server. I plan to use OES linux 64 bit on hp multiprocessor server 6gig ram. The groupwise server will be running poa,mta,gwia,web access agent and webaccess application. My question is do you think one server can handle this? I have netware boxes with 300 users single processor that run like the wind but have not tried linux.