That said, in answer
to your question;
You seem to be
talking about a functional cluster - but these are being depreciated afaik -
ITIM 4.6 only supports a regular cluster.
It very much depends
on system load & sizing to be honest. You can put it all on one
machine, or you can have many. Assuming you use IDS (which uses DB2) and
you need multiple servers;
Server#1: WAS &
ITIM Application
Server#2: IBM
Directory Server (ITIM instance), DB2 (LDAP instance), DB2 (ITIM Audit db
instance)
OR
Server#1: WAS &
ITIM Application - node 1 Server#2: WAS & ITIM
Application - node 2
Server#3: WAS
Cluster Manager, IBM Directory Server (ITIM instance), DB2 (LDAP instance), DB2
(ITIM Audit db instance)
Server#4: HTTP
server (points to Server#1, Server#2)
In terms of DMZ's,
all the ports are documented for inter-app communication so that should be ok,
although personally I'd put the ITIM solution within it's own DMZ & not each
box. Put the HTTP server (server#4) outside the DMZ if necessary.
That way you limit the DMZ config's needed yet don't really loose that much by
way of security.
K
Karl
Prinelle Principal Architect Elyzium Ltd www.elyzium.co.uk
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