Will a SAN lif migrate to a surviving port after a link failure on its current port ?
Applies to
- ONTAP 9.x
- Clustered Data ONTAP 8.x
Answer
- A SAN LIF does not migrate (unless you move it manually after the link failure) in non All SAN Array ONTAP solutions.
- Instead, multipathing technology on the host diverts traffic to a different LIF. For more information, see the SAN Administration Guide.
Additional Information
Considerations for LIFs in cluster SAN environments
- Initiators must use Multipath I/O (MPIO) and asymmetric logical unit access (ALUA) for failover capability for clusters in a SAN iSCSI or FC environment because SAN does not support automatic failover for LIFs.
- At least one SAN LIF of the appropriate protocol must be configured on each node that hosts a mapped LUN and the node's HA partner.You can configure two LIFs per node, one for each fabric being used with FC and to separate Ethernet networks for iSCSI.
- Some options are not applicable for iSCSI or FC. For example, you cannot use IP addresses with FC.