Setting up RAID on Elitedesk 800 G6 with Optane SSD

[LesNougat]

I am trying to setup RAID 1 on an Elitedesk 800 G6 using the PCIE M2 SSD (with Optane) that came with it. I have inserted exactly the same type of SSD (the type that comes with the G6) into the other SSD slot (so both slots are populated) but when I go into the "3rd Party Option ROM Management" RST utility it only lists one of the SSDs so I am unable to create the RAID volume. I have read that Optane needs to be disabled but when I go into the BIOS I am unable to disable Optane without RAID also being disabled. What am I doing wrong? I have no problem if I use M2 SSD's that don't have Optane on them but I want to be able to use the ones that are shipped with the computer. Thanks.

[itsmyname]

Your computer is recognizing that the first SSD is not "branded" as being a member of any "set" of RAID devices.  Your computer is recognizing that the second SSD is "not initialized", and therefore is eligible to be configured to become a member of a "set".

Consider using the free Macrium Reflect software.

1. Download and install it.
2. Use its "update" function to get the latest update.
3. Create a "recovery media" -- either burning onto one CD-R, or writing onto an "empty" USB memory-stick.
4. Shutdown your computer.
5. Connect an external disk-drive, with enough free-space to hold your entire "C:" disk-drive's contents.
6. Boot from the recovery media, not your "C:" disk-drive.
7. Do a "clone" operation, from your "C:" disk-drive onto the external disk-drive.
8. Shutdown & reboot from the "C:" disk-drive.
9. Belt-and-suspenders: check that the files on the external disk-drive have been written correctly.
10. Shutdown.
11. Boot from the recovery-media.
12. Delete the entire volume that holds the "C:" partition, to reset the volume to "not initialized".
13. Shutdown.
14. Reboot, and enter BIOS setup.
15. Create a RAID-1 set by specifying the 2 volumes that are now available.
16. Reboot from the recovery-media.
17. Do a "restore" from the external disk-drive to the "set".
18. Shutdown.
19. Remove the recovery-media (CD or USB) and the external disk-drive.
20. Reboot from the new RAID-set.
21. After a few minutes, if Windows seems to be "frozen", hold-down the power-button until the computer powers-off. Power-on the computer. This time, Windows should start normally.

I hope this helps.