IBM WebSphere Portal for Multiplatforms V5 Handbook

Chapter 3. WebSphere Portal V5 prerequisites and planning 41

3.2.4 Multiple-tier

This architecture is based on the multiple-machine architecture, but the different

machines can be in a different network area. In general, these different networks

are separated by the firewalls and use different network domains.

With the multiple-tier architecture, one can put machines with critical information

behind the firewall and put the interface machines, such as the Edge Server, in

the front.

The database is the most important component. In addition to the database, the

Domino server, Sametime, QuickPlace, etc. need to be available to users on the

back end, so they are placed at the back end of the architecture. Sometimes, the

LDAP directory is also put ...