This might be a dumb question, but I can't find explicit information about it.

The question is this:

I have my controlfiles multiplexed across different disks (or in this case across a number of mounted NFS volumes). If one of the those volumes became unavailable and made one of the controlfile copies unavailable, would it cause the database to crash?

I have never had an experience were one of the volumes hosting a copy of the controlfile became unavailable. I was always under the assumption that multiplexing controlfiles, redo, and archive would prevent a crash as long as there was one copy of each file available.

Can someone confirm?