So I am trying to build my 9 NVME drive array, and it won't let me. Any time I have more than 8 selected, the create button goes dim. I didn't see any limit of 8 drives in any of the advertising material, what gives? I wouldn't have purchased 9 drives and 2 4 way adapters if this limit was clearly stated.
Found this forum that MAY help in answering your question: Eight NVME Drives RAIDed on AMD Ryzen Threadripper | Page 2 | [H]ard|Forum
Here one of the answers at this forum: