Experience with HP Smart Array P400 and SATA drives?

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Has anyone benchmarked this controller (PCIe/4x, 512 MB BBC)? We try to use it with 8x SATA 1TB drives in RAID-5 mode under Linux, and measure strange values. An individual drive is capable of delivering 91 MB/sec sequential read performance, and we get values ~102MB/sec out of a 8-drive RAID5, seems to be ridiculous slow. Write performance seems to be much better, ~300 MB /sec - seems ok to me.

I guess I must be doing something wrong, I cannot believe that a 500 € controller is delivering such poor performance.



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