If you are looking for a MySQL cluster solution, dont buy this one. EMIC Cluster Sucks. No transactions, problems with synchronizing auto increments, etc.
One of our customers is using the software. Last night we deployd a patch that started using LOCK TABLES on a single table (which according to the documentation should work and did work under test-load). Well, after 30 Minutes in the middle of the night, when nobody is using the website, the cluster crashed and wouldnt go up again until after a total reset and one hour of resync. bah.
Does anybody use MySQL Cluster in production? It looks like an interesting alternative.