Just following up on this, I discovered that the poor Raid 0 performance was because Windows Storage Spaces creates a Raid 0 array with column = 0 by default. Of course, my Intel Optane 905p spanks the Samsung drives in the 4KiB range - but the below drive is for storing GB files only. Write speeds are slightly down with the Raid 1, but I am happy enough overall. I then changed it to Raid 1, and got the result below. In fact, it seemed to be practically no faster than a single drive. Very disappointed as it should have been closer to 7000 MB/s. Interestingly, I tried Raid 0 first, and it only did 3603 MB/s read. So instead, I setup raid using the Windows Storage Spaces. I tried the VROC, but even with the Standard key, it would not let me create a Raid using the VROC - it seems that you really need Intel drives for this unless you have very specific drives and motherboard. I got two Samsung 970 Pros, but rather than plugging them into the M.2 slots on the motherboard (i7-9800X, Asus X299 Tuf Mark 2), I plugged them into the pci-e slots using riser cards. Getting good performance seems to be a challenge as the DMI is a bottleneck, and a lot of configurations do not work. Don't seem to be any fast results, so thought I would post mine as an fyi.
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