I recently learned that WD external (aka "My Book" drives) use some sort of proprietary format so that their drives can't be removed from their exclosures and used without a reformat. So that led me to transferring a few terabytes of data off of my multiple mybook drives onto internal drives, so I could put the (often knocked over and really BRIGHT) external drives inside my machine. (And to clear up a bit of space on my surge strips...)
Unfortunately, one of the drives was USB2 only (ok it had firewire, but who has firewire on their PC anymore? I had it on my mac all the time but I don't have macs at home anymore.
Anyway, the USB2 transfer capped at 35 MB/sec, as expected. The USB3 drive capped at ~120 MB/sec, also expected (but for different reasons.) USB3 transfer speeds exceed the read speed for the 5400 RPM sata drive inside the enclosure... right?
Anyway, it got me wondering... What's the limiting factor for transfer speed assuming unlimited drive speed on both ends (infinite raid0?) Is it software? Is it hardware? I guessed the latter, hence why it's here.
Edited by corrado33, 03 October 2016 - 10:42 AM.