You're right, I thought about it too, but the fastest array is built with partitions closer to the centre of the disk, so it should be the slowest indeed.
The disks are big (180 Gb), the partitions represent less than 10% of it and follow each others. It cannot explain 30% difference in performance.
You can test the performance across your drives with the program zcav (which should come with bonnie++ - if not, take a look at http://www.coker.com.au/bonnie++/)
-- Mads Peter Bach Systemadministrator, Det Humanistiske Fakultet, Aalborg Universitet Kroghstræde 3 - 5.111, DK-9220 Aalborg Øst - (+45) 96358062 # whois MPB1-DK@whois.dk-hostmaster.dk
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