What is the effort to upgrade SNC to SNC HANA

Hi Gurus,

Can you give estimates and provide guidance on what is needed to be done to upgrade current SNC landscape (On SCM 7.0 EHP2) to SNC HANA. How much functional resources is needed, or is it all basis work to convert databses?

Current SNC landscape has both supplier (PO/ASN/Invoice/SNI/SMI) and customer (responsive replenishment)  processes active

Thanks,

J.