It sounds like for tri-mode, it isn’t as easy as a simple hand-me-down backplane from the enterprise and putting it in a cheaper chassis, like they did with the SAS/SATA backplane. There is R&D involved in developing a specific HL backplane or per-drive cage similar to the way they have them wired in the Stornado F16. They’re also concerned with the cost of the HBA that would be required to support the NVMe drives.
Do you have any input on what mixture of 15mm, 7mm and 3.5 inch SAS/SATA/U.2/U.3 FF drives you’re trying to run? And if you’re trying to do it in the 4U ATX or 5U Beast chassis?