We've got a PV220S attached to a PowerEdge 2650 (PERC 3/DC RAID controller), and we're experiencing less-than-stellar performance on our RAID array (4 drives in a RAID 10 configuration, 73 GB 10K RPM Ultra 160). Using NBench, we get a write speed of ~4.5 MB/s and a read speed of ~65 MB/s on the 220S RAID array. Using the same benchmark on the internal drives (2 drives, RAID 1 configuration, 18 GB 10K RPM Ultra 160), we get a write speed of ~ 50 MB/s and a read speed of ~ 70 MB/s.

To the best of my knowledge, we are up-to-date with the latest drivers and firmware for the 220S (firmware E14) and the PERC 3/DC (firmware 1.80, driver 5.39), as well as the latest version of Array Manager (3.4.0). Anybody have any suggestions as to how we can improve performance on this system? Thanks in advance!