Oneway sync of two SQL Servers via FTP
We are using a merge replication topology between our servers where:


Initial snapshot is made available to subscribers through ftp
further data exchange (in our case, merge sync between servers) is done through web replication


Here is a script I once proposed to launch such a replication. You will notice that one of the sp_addmergepullsubscription_agent parameters, @use_ftp, is set to True. The @internet_url parameter sets the https adress used for replication. There are other options allowing the use of an alternate snapshot location and/or its compaction (which could make sense when you are talking about a 1To database ...)

Hope it helps