am a video editor and want to buy an 872XT model. The ultimate goal is to have all 8 bays filled with 12TB Ironwolf drives in RAID 6. However, due to budgetary concerns, I am able to start the work I need by only filling 4 bays, and add the other drives as needed. Question is, if I start with 4 drives in RAID 5, when I reach the 6-drive minimum for RAID 6, would I be able to switch over the RAID mode on the QNAP? Or will I be stuck with RAID 5 if I start out that way?