You will only have a CTRL-C prompt if you have a SAS 5/6 and a CTRL-R if you have a PERC 5/6 RAID controller.  Unless you have one of these controllers, the only RAID you can do (short of buying one of the above) is a software (OS managed) RAID.  You can also open the system to see if the drives are connected to the onboard SATA ports or if they are connected to a card.
Hi everyone...  I can't figure out how to set up a raid on the poweredge 840. I don't have the original disks that came with the system. When the system posts I hit ctrl + c and nothing happens and I also have tried ctrl+r, ctrl+s. Nothing worked..  Does anyone have any ideas on what I can do? Or do I have to set up a software raid with dynamic disks? :/  Thanks for the help
PowerEdge 840 Raid Help