The most recent I can recall is Bela Ban's video that shows how this works with Infinispan 5.2 (which hasn't yet been released to final). I think the challenge is that they've been making substantial improvements in 5.2 to make this far more efficient. I recommend contacting the Infinispan team to see if it's worth trying with 5.1. (Multi-site configuration is all transparent to ModeShape.)

You could try using ModeShape 3.1.0.Final with Infinispan 5.2.0.CR2 except that a pretty critical state-transfer bug prevents proper startup for caches that use eviction. See ISPN-2712 for details (we're tracking this with our own MODE-1754).

So if I understand you correct multi site clustering is more an infinispan thing than a modeshape thing? So modeshape just acts on a higher abstraction level than infinispan?

Yes on both counts.