When I installed OMV on the SATA HAT with 4 drives, the drives are recognized fine but the webUI does not allow to create a RAID on them. When I created the RAID manually by command mdadm, it was created fine and also shows up in the OMV webUI.
In the OMV forum they do not recommend RAID on the SATA HAT because it is viewed as an USB device. They also say it is not recommended due to stability issues and a RAID would not bring extra security.
The same seems to apply to LVM, OMV did not allow me to create a LVM. Once I created it manually, it works fine.
What is your experience on this issue?