I managed to install OMV4.1.3 onto a 40GB SSD connected via SATA and my RAID6 is already recognized in the GUI. However, the GUI shows several issues. I attached two screenshots, one from when I was trying to add a share and another one from trying to add a user. A third one is from when trying to shut down the OMV.
Also, I noticed a main difference: After saving changes I no longer have to update the site. I was running OMV 2 before and suspect this to be normal, right?