we are working for make a multiserver installation of zimbra 6.05 on 3 separete esx 3.5 sun bachines based on hp dl380. this solution must server up to 1000 users (90% pop users) connected via outlook/express clients.
I will plan to have 3 zimbra server in multiserver installation mode:
1) ldap 2gb ram
2) mailstore 4gb ram
3) mta 2 gb ram
all machines will run ubuntu 8.04.4 server
my BIG question is:
does is better 32 or 64 bit ?
(for my experience 32bit is better)
please help me