Or theoretically, with multiple JBOD style enclosures like a Nettapp disk shelf. You could potentially infinitely expand your server to make as many arrays as you want.
Obviously there would be some trade offs with having many arrays, but id assume features like staggered parity checks etc would be implemented, so that only 1 array at a time would ever be getting a parity check at a time, and id dare say a staggered drive spin up option for parity check or cache mover operations would be neccessary with large amounts of drives, as i could easily see some people building ridiculous 100+ drive servers.
Either way i think multiple arrays feature would be amazing for unraid and would even possibly result in an increase of sales, as i know for a fact many people choose other options over unraid due to the max array size / not being able to create multiple arrays.
