This article is part of a series.
Disaster Failover is very similar to a planned failover described in part 9 of this series. Because the master is not available unexpectedly the vFiler cannot be stopped and the temporary replication from slave to master has to be set up later before the rollback. When the master is powered on again you have to take care that the vFiler is not started automatically. Otherwise the vFiler is running on master and slave simultaneously. In comparison to the planned failover steps 1, 4 and 5 are moved from failover to rollback.