For the Intel® SSD DC P3608 Series, you need to make sure you have the latest NVMe* drivers, here is the link: https://downloadcenter.intel.com/download/23929/Intel-Solid-State-Drive-Data-Center-Family-for-NVMe-... Download Intel® Solid-State Drive Data Center Family for NVMe Drivers
As for the Intel® RST you can get better answers here: /community/tech/chipsets/content Chipsets
There is an NVMe RSTe that you need to complete your desired configuration. There are some hardware requirements so please read the description but I believe you meet those.
Take a look here https://downloadcenter.intel.com/download/25771/-Intel-Rapid-Storage-Technology-Enterprise-NVMe-Inte... Download Intel® Rapid Storage Technology Enterprise NVMe (Intel® RSTe NVMe) RAID Driver