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Thank you for the quick reply. I’m not surprised that there is an issue with the Marvell Controller and the Kernel. When I have some downtime to take the server offline I will move those 4 drives to the Intel SATA ports and try again.

Re-upgraded to 6.7.0 and experienced the same issues as before. None of my SATA drives connected to the MoBo were visible in Unraid after the update. I've included the diagnostics zip from after the upgrade. Hopefully this can be of some help. I will be staying on 6.6.7 for now. unraid-diagnostics-20190516-2115.zip

Updated to 6.7.0 from 6.6.7 and immediately began receiving the error: ‘comreset failed (errno=-16)’ during startup for multiple ata drives connected to my motherboard. Once the OS finally booted none of the drives directly connected to the SATA ports on my board showed up. My other drives connected to my LSI SAS card showed up just fine. I rolled my system back to 6.6.7 and everything was back to normal. I have heard of incompatibilities with the onboard raid controllers of some boards before but never experienced it. Could this be a case of incompatibility with this new update?