I'm having slow Finder problems with two raidz disk enclosures connected to a late 2014 macmini (10.11.4/16 GB/512 GB SSD/core i7) via USB3. The problems seems to go away when either one of the raidz enclosures is connected to one USB3 port and Apple's thoughts are that the two raidz are saturating the bus. Can anyone here recommend a Thunderbolt 2 to eSata or USB3 adapter that works without panics—there has been a oldish thread on panics and TB2 adapters but it petered out. Did anyone find a panic-free adapter solution other than move the disk arrays to Thunderbolt2 cabinets? if so, what brand?
TIA