ITBM should be on its own server. This is due to the heavy resources needed for JBOSS and JAVA.
Business Objects is not required but highly recommended for reporting purposes. The install bits for ITBM contains the BO BIAR. This contain the out of the box reports and universes.
ITBM requires a standalone JBOSS application server.
Should ITBM be installed on it's own server or can it be installed on a server with the ITSM apps?
Is BOXI required?
Will ITBM install a web application server or can it be accessed through Mid-Tier?
The installation documentation for ITBM is incredibly vague compared to BMC's other offerings.