Home > Storage > PowerStore > Data Protection > Dell PowerStore: Metro Volume > ALUA optimization
PowerStore supports ALUA in implicit mode. This means that it sets the device’s Target Port Group states and controls the ALUA states, rather than the host. For standard volumes, ALUA optimizes the paths between the nodes within a PowerStore cluster. For Metro Volumes, ALUA optimizes the paths between the nodes across two PowerStore clusters. ALUA optimization depends on the host connectivity configuration and the Node Affinity of the volume in PowerStore clusters.
Each PowerStore appliance features two controller nodes. Node Affinity is a feature that enables PowerStore to define the node providing optimized I/O for a volume.
The sections Host connectivity and Host configuration detail the various options and configuration. Users can configure the host connectivity in the PowerStore Manager UI with one of the following options:
To view Host connectivity information in PowerStore Manager UI, go to Compute > Host Information. Use the column selection dropdown to add the Host Connectivity column to the table.
To view Node Affinity information of the volumes in PowerStore Manager UI, go to Storage > Volumes. Use the column selection dropdown to add the Node Affinity column to the table.