Setting up Raid5 on S2600cp4

I am  setting up Raid5 on a S2600cp4 do you suggest setting it up in Intel RSTe or ESRT2 using a RAID C600 Upgrade Key RKSATA8R5? Also any tips on setup would be helpful.

Tried using RSTe, set up raid5, booted and tried to install server 2012.

It could not find the drives at first, I pointed it to the driver and then it found the array,

Then it could not set up partitions for installation and I am stuck.

The system is a P4308CP4MHEN. I am using three SATA WD 2 TB enterprise drives.

Any advice will help I am a new at setting up raid drives.

Thanks