Thank you for the reply Edward. Much appreciated. When upgrade is done what will happen to the licenses? Do I have to buy them again or will it be remain as it was?
Also I would like to know if I reimage the VM server to upgrade 5.2 to 5.4 (Since 5.2 is not supporting to install on VM Esxi 5.1) how can I retrieve the old license for new server? Will that license available after I restore the ACS 5.2s backup?
Thank you for nice explanation. It gives me a relief since cisco documentation is not good enough. I will try this solutions and then will mark the answers correct :)
You are immortal mate :)
one more clarification please.
1. if ACS is connecting with Microsoft AD , Will there be any issue occur when I try to upgrade or reimage?
2. I have 2 ACS (Primary and secondary) . Cisco says upgrade the secondary first. at the mean time it said "To ensure that you preserve the local certificates of the secondary server, you should promote each secondary server to the primary role, and then perform the ACS 5.4 upgrade."
it's conflicting with each statements. what is the correct way I should follow.
Also how can I keep my log collector while the upgrade process? Do I have to keep it on primary until the secondary server upgrade done and after the old secondary has upgraded to 5.4 can I redirect logs to new 5.4 (old 5.2 secondary) ACS server?
3. Cisco said "Register the secondary server to the ACS 5.4 primary server" . But when I upgrade my Secondary first there is no 5.4 primary at my environment. So how can I do this?
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