Thank you for your insight. I skimmed the Unraid documentation and found that the Unraid Arrays apparently support the adding of drives to an existing pool whenever you please, which is great. To be honest, I’m just trying to find reasons to not have to buy Unraid, but it seems harder and harder to justify. I was planning to go either SnapRaid or ZFS with OMV because it seems simple and free, and OMV has some nice features… but now I’m not so sure anymore.