I think I read that V3 will eventually have support for multiple servers. This is one of the reasons I am interested in it, and I think the current architecture direction is going to work out well for that.
I just got a couple new servers, and I am going to set up two V3 servers to play around with this. I figured I could set up MySQL replication across both servers, and then mydns at least should work nicely for redundant DNS services without any mods. It seems all of the DB related stuff would work fine, it's just the directory/file creation (local) stuff that becomes an issue.
I had already been working on multiple server capability for VHCS2, so I know some of the possible issues, and some of the solutions.
How far have you guys gotten toward multiple server management?