Why BPC Unified on HANA

Hi All,

I am presently writing my dissertation on SAP HANA and one of my uses cases focuses on SAP BPC on SAP HANA.

My questions are :

1. Why is it necessary(Mandatory) for SAP BPC unified to be implemented on HANA ?

2. (I am pushing my luck here) i am looking for an approximate costs (Ball park figure) for SAP BPC 10.1 unified (Assuming that i have SAP NW and SAP HANA in place).

Thanks,

Joe