The new server came in and I installed the new drives with no problem, although I will probably order another 90 sata cable next time. The raid setup went ok, I went with a raid 5. On doing the performance testing though (using iobench) the write performance was only about 10% of what we were getting previously. Locally on the machine the read and write performance is fine, but over nfs 3 it is terrible. Then I tried it over nfs to a partition that was not raid, and it was still terrible. So, the problem appears to nfs and not the physical setup.
My next step is to try openafs and hope that the performance characteristics of it will be sufficient.
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