The new servers will be going into the data center this week (Monday if I can coordinate it), so we are close (finally!).
Just got some stuff fine-tuned with them today… wrote a cluster-copy and cluster-exec app for copying stuff across all blades and executing something on all blades. Made an init.d script that alters the routing table at boot (for this) and also chooses which services to run based on an environment variable. So now I can change the “job” of a blade just by setting the environment variable.