I have another strange issue.
As soon as I put my 2nd NVME SSD into the server both LAN ports go dead right when OMV starts boots. In the bios the SSD shows up just fine and I have lights on both LAN ports. The lights go out on the LAN ports exactly when the counter in the grub boot menu hits 0 and the boot begins.
The mainboard manual also shows no signs that the LAN ports will get deactivated with 2 NVME SSDs installed.
2x Kingston Server Premier 8GB DDR4-2400 ECC
Samsung SSD 970 EVO Plus 250GB, M.2 (OMV OS disk - in the upper M.2 slot)
ADATA XPG SX8200 Pro 2TB, M.2 (in the lower M.2 slot)
6x Western Digital WD Red 10TB 3.5" (WD100EFAX)