I have some questions regarding customer DR Solutions with Veeam.
I haven't played around much yet with the replication option, but i will soon

Scenario:
A customer buys Veeam B&R license to Schedule and run backup jobs to disk storage on site.
Now the customer want's a DR Solution off site.
The Customer has a 10+Mbps internet Connection.
How do we as an partner set up a Veeam Solution to handle multiple customers to single Veeam Replication node? Is it possible?
What ports need to be opened etc?
What licenses should we use for this, how should we license us best for future customers?
One other option i think of is that we could provide just ISCSI storage for the customer to save it's data on (in a dedicated vpn tunnel), anyone tried that over internet? (this option will of cource not be as good as having an replication server running)
Edit: Forgot to mention, Everything is Hyper-V !!! W2008 and W2012
(mod please move post to correct forum if posted wrong)