I inherited an R720 with Server 2008 64 bit. Due to a pending ERP upgrade, I need to upgrade the O/S to 2008 R2. When I tried that it said that I need to upgrade the PERC H710 driver first. I don't know which driver it's looking for. I downloaded one from Dell and when I ran it, it said that it's the wrong driver for the O/S. Am I in a Catch-22 here? Any help would be appreciated.