In addition to the PERC drivers/firmware (which is why I advise to do a Custom install - to install Storage Management even though OMSA disables its installation by default when severely out of date), you should make sure that BIOS and ESM/BMC are up to date as well (best to do those first), as proper device identification and communication depends on compatible firmware versions.  You will need to re-run installation after updating. Installation of OMSA does not usually require a reboot with this generation server/OMSA version, but depending on how the server is configured, it can occasionally require a reboot.
Could someone point me to the latest version of the OpenMange software for my PowerEdge 2900 server with Windows 2000 SBS. The version that I am using cannot see the Perc 5/i RAID controller.
Looking for latest OpenManage software for PowerEdge 2900