[erlang-questions] Dedicated mnesia nodes or fragmented nodes?

[ryeguy]

I have 2 cluster layouts in mind, and was wondering what the pros and
cons are for each:
1) Nodes are either worker nodes, or mnesia nodes. Mnesia nodes
contain only tables and do nothing else; worker nodes do all the heavy
lifting.
2) All hybrid nodes - all nodes do heavy lifting, and each node has a
mnesia table fragment on it.