It is too bad they didn't bond the two ethernet links. Reading through I didn't see a mention of what the other ethernet link was used for. That should have given them a jump in speed.
We're considering building one of these but I used to work for a clustered storage vendor. The import thing to notice here is this is single client performance - aggregate performance is often considerably better. ie, you might be able to push 1GB/s with 10 clients, but only 100MB/s with one...
