Hiya,
We may have a requirement for clustering and mirroring SharePoint, across 2 sites (30Mb leased line between them).
We want a setup where users in office A point to their local SharePoint server and users in office B point to their local SharePoint server, but if their local SharePoint server goes down, they're transitioned to the working SharePoint server in the other site.
Pretty much what DFS-R offers for file storage.
Thanks