@Propagandalf sorry to revive this conversation... however @luxe mentioned

"A system seams to run in trouble on too many usb3 controllers ... @Propagandalf had a lot of issues as he tried to run 5 pcie cards with 4 controllers each."

How many maximum were you able to run before you ran into problems? What factors do you think effected that? Can you elaborate more on the issues you found?

Much appreciate -- looking to splurge on multiple HDs right now and want to make sure I am ready to plug and go.