I have unraid running on a HP Z800 workstation.
It has a Netapp SAS 4-Port 3/6 GB QSFP PCIE 111-00341+B0 Controller (PMC Sierra PM8003)
Connected to a Netapp Disk DS-4243 24 bay diskshelf.
I have just installed 6.9.0 and now none of my diskshelf drives appear.
Everything has been running fine for around 2 years and have done system updates before without any issues.
The only drives that appear are the USB stick for unraid and the dvd ro