Is the Z420 ok with 4Tb Internal sata media drives and external usb3 8Tb g-raids?

Hey folks

Has anyone had any issue's when adding 4Tb internal

sata drives to a Z420 or do they work just fine?.

Also I may have to connect 8Tb usb3 G-raid drives

are these ok with the z420? 

http://store.apple.com/us/product/HB138VC/A/g-technology-8tb-g-raid-professional-high-performance-dual-drive-hard-drive?fnode=5f&fs=f%3Dusb3%26fh%3D3783%252B30a8&page=2