A minimum recommended scenario involves a web server and a zone consisting of a database server, file and e-mail services.
The datacentre zone may span from one single server hosting the database, file and e-mail services, to one server for each.
This scenario can be illustrated as follows:
| Protocol and service used for the different arrows |
| 1 |
HTTP, default port 80 (AES Encrypted content) |
| 2 |
IMAP |
| 3 |
File Share (may vary according to document archive provider) |
| 4 |
Database proprietary protocol (as implemented by the database drivers) |