In our Experience: Oracle can withstand an 'outage' from NetApps for approx. 3 minutes, PROVIDING, it does not attempt to perform a physical write. It does buffer and retry. The majority of the times, the netapps filers have caused most of the databases to crash. Most of those come up with normal crash recovery, but in a few isolated cases, we had to restore from backups (in one case - because the datafile size was truncated.)

Your 'experiment' may have been fine this time, but next time, you may find yourself restoring all of your databases.