ZFS? It offers advance stuff that I want, such as if I put an SSD, it turns out a supercached level 4 that really speed up everything. such system would costs a lot (+1000$), there's deduplication too but I wouldn't use it alot. It can correct and verify data on the fly, everything else is reallly nice.
Yeah you don't need ZFS if you have less than 8TB of storage I think. Anything goes beyond 8TB, ZFS benefit a lot
I use low rpm drive. What cause the noises would be the fan of the PSU and in HDD chamber