I upgraded to a PERC 6 / i Integrated RAID Controller and now problem is solved. Just needed a newer internal RAID Controller.   Issue is resolved!
Hello All I'm the I.T. guy for my Dad's small business. I help them on the side. They recently bought a used PowerEdge 2900 server with 4 internal SCSI disk drives This server also has a Dell SAS 5/i Integrated Controller I want to install Windows 2008 R2 standard on this server and use it as a File Server and a place to host QuickBooks Enterprise.  The problem I'm running into is that I cannot find in the Bios or anywhere in the server boot utilities where I can configure the 4 internal disks to become a RAID 5 array. I want to do that and THEN install the Windows Server OS. I've used the latest Dell Server Build Utility and also updated all the firmware to the latest builds. The Server Build Utility won't let me configure the RAID array.  What am I missing here? Thank you for your help!!
Dell PowerEdge 2900 - need to use internal disks for RAID