I installed 2 Samsung 980 M.2 NVME SSD each in their own Sabrent M.2 to PCIe adapters. Proxomox installer detected them just fine. I selected them from ZFS (Raid 1), and the install completed without errors. However, once I rebooted the ZFS mirror was nowhere to be found. It's not even in the bios or the hdd list for the bios boot manager, but it is listed in the UEFI boot manager as unavailable.