I don't think you can see the RAID volume in 'SATA Settings'. If I understand correctly it's only for onboard SATA ports. Check the boot order in BIOS and you should be able to see something like PCIe RAID controller. Choose that as a boot device and you should be fine.
The SAS Topology seems OK. It tells you that you have two physical drives in the enclosure, and you have one IM volume with those two drives.