AMD will not initially support NVMe RAID technology on AMD Ryzen Threadripper processors, which is a problem, although not a highly relevant problem, if we are to tell the truth.
The AMD Ryzen Threadripper processors play the card of having all the PCIe lines directly in the processor, against what Intel does in the Basins Falls, where 44 PCIe lines are direct for the graphics cards and for the VROC, while the storage is controlled by the chipset, with 24 PCIe lanes. Threadripper is an important solution for the professional segment to compete with Intel solutions, but they have an initial problem and that is that they will not initially support NVMe RAID technology.
AMD has provided a total of 64 PCIe lanes for the Threadripper, but this number of PCIe lanes have a significant problem, which is what has been discovered about the compatibility with respect to the NVMe RAID, not offering compatibility initially. This has been leaked by Tom's Hardware, but they have also commented that they have contacted AMD and that they are developing a solution to the problem. We don't know how long it will take for AMD to fix this problem, but it is clear that Threadripper will not initially have NVMe RAID support, at the time of the release of these processors.
It should be noted that NVMe drives offer us high data transfer, so RAID technology can be ignored in the first instance. The Samsung 960 Pro units can reach up to 3500MB / s in terms of reading, something that for an average user is more than enough, but in regards to the professional segment, where they work with very large and heavy files, more speed means Significantly reduce heavy file transfer times, speeding up work and reducing times.
Source: TH

Wow !!! that in other media they handled it as a permanent problem!
I have seen it in several foreign media and they all comment that it will be an initial problem to be solved
That good!! I think it is an excellent platform to take this aspect as a limitation.