Dell EMC Metro node 7.0.1 Administrator Guide

Logical Unit failback

When the status of the logical unit becomes nominal, metro node automatically attempts to fail back the logical unit to its default controller. This is usually defined as the owner of the logical unit as determined by the array. The logical unit failover execution process is started again in order to optimize the performance on the storage array side. This failback occurs only if the array has the autoswitch property enabled and the logical unit is visible through the controller.