DR Setup Query

Hello All,

I have a master with NBU 7.5.0.4 and 2 media servers with same configuration and also VMware backup host center.

I would like to make a new DR setup at different location. The following are some queries :

1) Do I need a to have all the above servers to complete the DR

2) One server can be used as master and media and vmware host center?

3) Do I need to purchase any license for DR setup.

Thank you

Vijay