Why not install 2003 as a VM? There is no 2003 driver for the H710.  You can "try" this: 2008x86 for H710m on R720:[URL] You must download the "hard drive" version of the driver and run to extract its contents before use. Also keep in mind that the PERC does NOT support non-RAID, so you MUST configure/initialize RAID in the CTRL-R utility BEFORE any drives can been seen by the OS, even if you do find drivers that work.  
i read that with r720 u cant install windows server 2003 directly you need to install as VM but i read something about getting the right drives for the raid controller or something like that my r720 has PERC H710 INTEGRATED RAID CONTROLLER. if anyone could provide steps as which i can install 2003 and if there are any custom drives or software i would need to do so Thank You
How to install windows 2003 on R720 server?