Note: this is NOT an unRAID bug, but a defect in Marvell disk controller chipset modules.
unRAID OS Version: Probably all v6 releases with virtualization support enabled
Description: There is a bad bug in the Marvell code for certain disk controller chipsets that causes connected drives to be unable to communicate when IOMMU is enabled. If VT-d or AMD-Vi are turned on, then DMA reads fail, and the drives are unavailable. Once turned off, the drives appear and work fine. These card