SATA Errors with Controller PCIe Passthrough

[drdownload]

Hi, I'm trying to passthrough 2 Syba 4 Port SATA Controllers to a VM.

It works flawless with one controller but if I add a second (identical) controller I just get a bunch of SATA errors.

Any ideas on this? maybe switching the PCIe Slots or something?

 

[marsian]

Where do you get the errors - within the VM or within Proxmox? Can post some excerpt of the log?