"No, the S-series controllers are garbage. My recommendation is that if you care enough about its performance to ever even consider running a benchmark, then don't use it." Agree this controller is useless, Dell should cease using these low end devices ( notice I did not call it a raid). Now all you users can spend an inordinate amount of time trying to figure out the issue , wait for a possible solution ( long and unlikely, as it was broken to start) or you can buy a real hardware raid. Personally I inherited a couple clients with low end devices, and did not waste any time,  I just purchased real hardware raid controllers.  Being arrogant/angry at Dell is not getting your raid subsystems up to par , Hey if you order a Porsche with a VW Beatle engine don't expect it to win races.  
Hi, Just taken delivery of a PowerEdge R630 which has a Perc S130 RAID card with 4*250Gb 7200 RPM SATA disks in a RAID5 array and we're experiencing unexpected slow performance. Using CrystalMark, the max Read speed we're seeing is 12MB/s, with write as 7MB/s. I know it's software raid, but I was expecting a bit more performance than that. The latest drivers were taken from the dell web site (4.0.0.37) and looking back, the windows server install took a lot longer than usual. I know it's soft raid, rather than hardware accelerated raid, but I would have expected the performance to be significantly better than it is (I have a NAS here with software raid providing 90MB/s read/write with just an Atom CPU, Not 2*Xeon E5-2620 v3. Many thanks.
Slow Performance with a S130