A migration is when you install Identity Manager 4.0.1 on a new server, then migrate the existing data to this new server. Follow the Basic Identity Manager System Checklist
in the Identity Manager 4.0.1 Framework Installation Guide to verify that the installation is complete.
The advantage of performing a migration is that there is minimal downtime for the drivers. The disadvantage is that it requires new hardware.
If you are performing a migration, proceed to Section 5.0, Performing a Migration.