Disabling RAID controller (PERC 5/i)

Hi all

 

We have purchased a PowerEdge 1950, with Xeon 5050 3.0GHz and a PERC 5/i, Integrated Controller Card. I would like to disable the RAID option from the Controller. Is it sufficient to disable it from the RAID BIOS or do I need to take any further steps in disabling it? Apart from that, since the server already has data on it, will it be sufficient to disable the controller or do I need to re-install the system?

 

Thanks in advance.