I'm upgrading from Windows vcenter 5.5 server to an appliance. I've followed the guides and ran VMware-Migration-Assistant.exe on the source server, all was fine. You have to leave the Migration Window open
I then ran the installer.exe on the same source server and 50% through the vcenter server shuts down. Should i have run the installer on a different Windows server? Would it matter that the server shuts down with the Migration Window open?
Should i have run the installer on a different Windows server?
Yes, the installer has to run on another system (not necessarily a server, can also be a PC).
Since the vCenter Server's identity (hostname, IP address, ad account, ...) is migrated, the installer needs to shutdown the old vCenter Server prior to powering on the vCSA with the migrated identity. The Migration Assistant is only required for the step in which data is retrieved from the original system.