I'm working on a SharePoint solution using SQL12. I will have two locations, one in madrid, and one in paris. I have a very fast WAN and high IOPS in both locations. I'm currently thinking of 2 SQL HA pairs, one pair in each location. Performance and BI are key features of this solutions.
The question is, can I extend the Always On feature over a WAN of ~792 miles. I'm hoping that using the Always on, high availability feature and database groups of SQL12 I can deploy my sharepoint across a WAN and maintain a content redundant Sharepoint farm. Essentialy this would be just like setting up multiple servers in a single location, as the same database is fast and available at both locations. If not, I have to use a different architecture and a third party tool for content replication. Can the distance perhaps be mitigated by using sync/async and commit functions?