What drivers are you using for your drives? I found that with IBM
Ultrium drives the IBM driver does far better than the stock Linux
driver, particularly in error reporting and correction. I think it also
sets the minimum block size to 256k. I get around 50-60MB/s writes (I
think this is actually limited by disk bandwidth), and 80MB/s reads.

-- 
-- Skylar Thompson (skylar AT cs.earlham DOT edu)
-- http://www.cs.earlham.edu/~skylar/

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