Hello guys, this is a very interesting thread but I will join it tomorrow!
I have read a similar discussion for SSDs some time ago. That took place here [1]. Corruption of such devices can lead to complete data loss and not just corruption. Please install smartmontools and post its output here for each disk so that I can see if your disks are healthy. Also I must see their firmware version as there might be a firmware update available. [1] https://marc.info/?t=149186660400002&r=1&w=2
