hc7 webserver and haproxy

hi, we use to build our webserver and dbserver with a redundant failover  solution based on haproxy and san storage. we'd like to know if it is possible to build it also for the webservers running with hc ( 7 or 8). would licenses have issues because of the two different ip's? of course, if it needs two same license for the same www role  is not this the problem.

There is no issue with any thing except SAN storage that is not yet supported with Hosting Controller. This is in our to do list and will be supported soon.