>Databases (VC and VUM) are located on clustered SQL servers.
So, not really a problem.
1) Make DB backup
2) Stop vCenter services, set them to "Manual startup"
3) Backup SSL keys
4) Remove vCenter server from domain
5) Shut down vCenter server
7) Make Windows 64bit clean installation on new server, use same IP and name as for old vCenter server
8) Restore SSL keys from backup
9) Make 2 ODBC connections, 64bit for vCenter and 32bit for VUM
10) Install vCenter, point to existing database
You will have old vCenter as a rollback, but you have to restore old vCenter DB from backup first.
MCSA, MCTS Hyper-V, VCP 3/4, VMware vExpert
Our last upgrade of vCenter to 4.0 U1 didn't go well and management remembered this when i raised the upgrade to 4.1. I just need to have my plan verified and some of the confusing point clarified, which i think you have done Anton, so thanks.
No need to use the DataMigration tool as we have the remote database, backup your SSL certs and use the same server name/IP on the new server.