Actually my Unraid is not very noisy at all. I put in a quiet Zalman CPU heatsink/fan. I also have a quiet PS. The Antec P180 case has 3 120mm fans that can be switched to low. The drives spin down when not in use. I have 6 drives in my system and it's sitting in my bedroom about 3 feet from the bed and I can barely hear it at all.