Thank you very much for the helpfull link! I will try that after the Parity Check is completed, so that will be tomorrow.
There is actually a new BIOS Update available, so that will also be on the checklist.
The issues with the SSD dropping started after i installed the HDDs, of course that could be coincidence. But i will also give the changes you
I forgot to mention that i had to change the syslinux.cfg file to get the HDDs running in the first place, see below
append initrd=/bzroot intel_iommu=on iommu=pt
I will keep this Thread updated