gasaraki :
Yes you can if you have a X299 mobo with the Intel RAID key. BUT it is not worth it because Optane is so fast that any RAID set up, even RAID 0 will slow it down.
Perhaps n_w_a's concern's are about redundancy, not performance.
Yes, two Intel Octane 900P can be combined into RAID with an Intel's VROC key.