This thread reminded me of a couple of screwups made by an operator in my old job. The ops used to run OS backups through a script which asked for the path to the tape (/dev/rmt/whatnot). We (the sysadmins) would give these to the ops if a new server was added or the h/w path changed. One Sunday (when else!) one of the ops gave /dev/rmtwhatnot instead of /dev/rmt/whatnot. ufsdump filled up / and we had to run to the datacenter to take console...

Anyone wants to share one of their stories?