I’ve heard arguments for both windows and bios raid, in the end, you’ll need to do your own testing to see which one is better. Some hardware raid controllers are bad, some are good.
There is one issue that you may not know about with the VP4100’s. Look at this graph here:
The VP4100 suffer’s a big performance decrease after 175GBs written. Each plotter does 1.4TBW to generate one plot. You might have a big bottleneck on your hands. More discussion about this can be found here: