Looks neat. It should have a redundant power supply though. With redundant power just one of these could be a good platform for deploying fault-tolerant services.
I think the point of this kind of server is to build the fault tolerance at the rack, or at least 1U, level, not at the level of individual components.
If an individual server fails then your service shouldn't even blink.
If an individual server fails then your service shouldn't even blink.