Hi again, I've been completely unsuccessful in capturing the problem with File Activity and as before Open Files and Open Streams doesn't tell me any thing useful - i.e. I clear File Activity, spin down the disks, wait a few minutes, then magically every disk is spinning again but no logs in File Activity at all (i.e. zero).   File Activity works if I say play a file in plex for example so that doesn't appear to be the problem. If it's what @nuhll said about "someone vistited a directo