On the unRaid forums recently, I was responding to a user who was asking why his VM gcow2 image did not shrink when files are removed (thread here). I advised that auto-shrink is not standard behaviour, and in the discussion, it became clear that the use case was security camera footage. The user figured out that perhaps saving video files to a network share would be better than to the VM boot / system drive, and I mentioned that I do this with my BlueIris setup. I promised a quick guide, so here it is....
