A migration is when you install the latest version of the IT Management Suite solutions on a new computer, and then migrate the data from the earlier ITMS solutions to the latest version of the application.
You must migrate the Notification Server 6.x or 7.0 data to either Notification Server 7.1 SP2 or Notification Server 7.5. After migrating the data, you must upgrade to Notification Server 7.5 SP1. The migration process and the type of data that is migrated depends on whether you use Notification Server 6.x or Symantec Management Platform 7.0.
You can perform a migration from IT Management Suite 6.x/7.0 to IT Management Suite 7.5 SP1 under any of the following situations:
When you want to install the latest available version of IT Management Suite on a new hardware or consolidated hardware (off box)
When you update the operating system of the computer
When you configure a new Configuration Management Database (CMDB)
When you plan to replace IT Management Suite 7.0 with IT Management Suite 7.5 SP1
When you plan to replace IT Management Suite 6.x with IT Management Suite 7.5 SP1
For more information about migration to ITMS, see any of the following documents: