there's no need to talk about raid, the controller in a SSD already takes care of the multiple flash chips it contains and that pretty much explains why some do 200MB/s reading, others 100MB/s and a typical USB drive much less.
They're talking about some sort of custom packaging, not a commercial SSD HDD. As in, buy a bunch of cheap 30 MB/s chips, put them together, ???? and 200 MB/s.