DIY NAS Part 3: The Filesystem

This is part 3 of the project, see here for the other parts. Which filesystem to use was fundamental. It affects power, noise and resilience. I planned to use RAID to get resilience, but typical RAID setups prevent disks from spinning down, which means more noise and power ( more than you might think ). I did a bunch of research and found that a combination of SnapRAID and MergerFS was going to be…