This is a follow on question from, Use backup restore then attach in Sharepoint 2007 to 2010 migration.
There are 5 databases in the SQL Server Instance for Sharepoint Server 2007:
Which databases do I backup so that I may restore them on the new SQL Server 2008 R2 instance ready for migration to Sharepoint 2010? In particular what is "SUSDB"? Currently, I have backed up items 1, 2, and 3 and I don't believe I will have to migrate the search and config databases.