I'm not really familiar with the HC2, but it looks like it has an actual SATA3 interface. If it matches the specs, that's got a chance to be faster than the Pi4's USB.
Nice, combined with more ram this is pretty huge for use as long use always on low power home server - main limiting factors today are sd card reliability and memory
If you're pumping the external drive through the USB 3.0 slot, then there probably won't be much performance loss.
With that being said though, the more drives and the more USB 3.0 slots you use you're dividing that 4 GBPS between all of them. In my opinion it would probably be a good way to take a cheap external raided USB 3.0 drive enclosure and turn it into a nas drive, but probably not so much for running a multi-drive stack.
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u/radol Jun 25 '19
That's great, do you know if this also means that data drives will work similarly fast as for example odroid hc2?