No Cisco MCS this time, so I obtained from Cisco the list of compatible servers :
Unified Presence Server 6.0(2) has the same requisites of the CUCM 6.0.
However I tried to use a different processor (more powerful), having the install script to state the the hardware is incompatible.
No workaround till now, however, I found the hardware check log, useful to see what went wrong :
Once the install srcript fails, DO NOT press the "Cancel install" button.
Press ALT+CTRL+F2 to switch console.
At the prompt :
Here's what I found :
The hardware you are using is not supported for this software
|HW type [Vendor/Product]||OK|
|Number of CPUs (1)||OK|
|Clock Speed (3600 MHz)||NOT SUPPORTED|
|Memory size (2048 Mb)||OK|