Many Supermicro motherboards come with an embedded software RAID controller. To access its controls, press Ctrl+I during boot-up.This control works only in Legacy mode. Legacy does not support partitions larger than 2 TB.
During boot-up, press DEL to access the BIOS.
In the Boot section, change Boot Mode Select to Legacy.
In the Advanced section, go to SATA Configuration and set Configure SATA as RAID.
Additional configuration options will appear. Set SATA RAID Option ROM/UEFI Driver to Legacy.
Change SATA/sSATA RAID Boot Select to SATA Controller.
Save your settings.
Reboot the server. During boot-up, press Ctrl+I to access the Intel Rapid Storage Technology configuration section.
Create the RAID. I'm combining 4 drives into RAID0.
Status Normal:
Reboot and re-enter the BIOS. In the Boot section, under FIXED BOOT ORDER Priorities, you now have the option to select Hard Disk: Intel RAID0 - which is our new array.