@limetech
This is what I've generally assumed bitrot to be. My understanding is that as a drive (particularly hdds) starts to fail, files on bad sectors can be corrupted or unreadable. Am I missing something?
I've had files corrupted for unknown reasons and now I keep everything important on btrfs raid1. Actually, this is the main reason I'm not on unraid -- I want checksumming and files repaired before going to backup disks. That and the fact I don't need cache drives.
Can the Dynamix File Integrity plugin or something similar alert me with a list of corrupted files upon detection? That's all I'm using BTRFS raid1 for but it gives no performance benefit.