How reliable is CentOS 5.x RAID 1? I'm considering the SuperMicro MicroCloud product which has everything i need except for hardware RAID

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http://serverfault.com – The SuperMicro 3U blade server looks very promising - MicroCloud! If i configure RAID 1 on the 2 SATA drives in each of the blades, how would that work out in terms of reliability? Compared to 8 1U servers with hardware RAID, the price difference seems huge - $10K vs $32K - so i would love to try this approach. Does anyone have first hand knowledge of the quality of this SuperMicro product? (HowTos)