> or 2 x 2 Gbps shared Only if both drives are saturated at the same time. But since the context here is a NAS usage, there's a max 1gbps upstream/downstream i

> or 2 x 2 Gbps shared Only if both drives are saturated at the same time. But since the context here is a NAS usage, there's a max 1gbps upstream/downstream in the first place so you could comfortably do a 4 drive mirror NAS off of this and not have any bottlenecks on the USB 3.0 -> SATA side of things.