How to disable #
Disabling the Embedded RAID Controller in the BIOS (UCS C220 servers) Step 1 Boot the server and press F2 when prompted to enter the BIOS Setup utility. Step 2 Select the Advanced tab, then South Bridge . Step 3 Set Onboard SCU Storage Support to Disabled. Step 4 Press F10 to save your changes and exit the utility.
If the changes are not getting saved or reverting , try to update the firmware of the CIMC and check the behaviour.
You need either the embedded raid/ Sw raid or Hw raid to manage the drive in JBOD / RAID / VD (virtual drive)