>If the NAS is required for the application pool to function, shutting it down gracefully sounds to me like the secure thing to do. If you have a site that's doing transactions, you can't let them get into an unknown state. It's the equivalent of a C5 error for apps, Windows kills them because something went wrong, in order to preserve other functions of the computer.

Ok, thanks

I am trying to figure out this logic in IIS for that detection as we had that situation four times since January and none of them shut down the NAS. Probably because the first four occurrences were not long enough.