So, I am beginning the journey to creating a NAS and will be running some sort of RAID (To be determined) My question is say i start with 3 hard drives in a raid format. I now want to add a fourth to increase my total storage. Is it as simple as plugging it in and adding it to the raid. Would any data be lost or will the RAID setup just add it in their with the other hard drives? How do you go about increasing the number of hard drives in a raid.