I am doing some capacity planning for a FIM 2010 R2 deployment and trying to understand the hardware requirements for the Reporting feature. Based on the diagarm below, it looks like the performance is primarily driven by two factors: System Center and SQL. Even the performance of System Center depends on SQL. So it all comes down to SQL horsepower. The rest of the servers (FIM, SCSM, SCDW) may not need much muscle power (I might be wrong though). What is your experience when planning for Reporting? What kind of challenges one can experience? Btw, I have a userbase of 100K and the change rate (# of requests per day) I am expecting is about 6%. What kind of hardware capacity would you recommend?
Thanks!