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I''m trying to use stories to drive some high-level design. I''ve got some branching scenarios where I want to follow a scenario, to establish a base situation, and then have different scenarios which ''branch'' out from that state, possibly several levels deep. I asked a bit about this a few days ago, and David pointed out the rather undocumented GivenScenario

I was trying to simply test bandwidth that Solaris/ZFS (Nevada b63) can deliver from a drive, and doing this: dd if=(raw disk) of=/dev/null gives me around 80MB/s, while dd if=(file on ZFS) of=/dev/null gives me only 35MB/s!?. I am getting basically the same result whether it is single zfs drive, mirror or a stripe (I am testing with two Seagate 7200.10 320G drives hanging off the same interface