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I have a shiny new Ultra 40 running S10U3 with 2 x 250Gb disks. I want to make best use of the available disk space and have some level of redundancy without impacting performance too much. What I am trying to figure out is: would it be better to have a simple mirror of an identical 200Gb slice from each disk or split each disk into 2 x 80Gb slices plus one extra 80Gb slice on one of the