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Message: <blockquote data-quote="Now Playing" data-source="post: 671202" data-attributes="member: 2381">Think of mergerfs etc. as a means of presenting separate file systems as a unified whole whilst in reality they're still independent drives each containing their own filesystem. If a drive fails that drive's contents is no longer presented in the unified whole. What I don't like about these tools is that if you write to the "pool" your files will be placed wherever the tool determines is most appropriate...so whilst presented as organised files, the reality is folder structures get duplicated across various drives over time, with files belonging in one folder being distributed in a folder by that name across the various drives. So... if a drive fails you don't really know what you've lost...until you try access a particular file and find it's no longer in the folder you stored it in. This is where snapraid is crucial in being able to reconstruct what was.Basically I've used mhddfs to present a single storage pool to say my music library, but for all file copy/move operations I bypass it and write directly to the drives/ folders in question.</blockquote>