So, everything is up to date, except the RAID firmware.  Latest is 6.2.0.0013: Also, OMSA 5.2 was released before the PERC 6, so it may not support it.  Try OMSA 6.3:  
I have reinstalled a Poweredge 2950 with Windows server 2003 Standard edition. I initially tried to use the DELL openmanage disc for the OS installation but this could not see the RAID array (correctly setup using ctrl-r utility). I therefore installed just using microsoft discs and the floppy disc with relevant SAS drivers. Once windows was installed I installed openmanage with the storage option enabled however I cannot see the storage in the open manage GUI. The SAS drive is a PERC 6i. What can I do to get openmanage to see the storage controller ?
Openmanage cant see storage