If you configured your system correctly for Veritas Storage Foundation, you can use VxDMP for multipathing and VxVM to manage the LUNs. You can still use commands such as sanlun to display information about the LUN paths.
See the Interoperability Matrix, which is available at mysupport.netapp.com/matrix.
Having the correct values for these parameters ensures that the multipathing and storage system failover work correctly.
Each time an HBA driver is started, it scans the storage system and discovers all mapped LUNs.
These values ensure that Veritas Storage Foundation works efficiently and correctly.
This means that, in addition to using tools such as sanlun and iscsadm to display information about the LUNs, you can also use the VxVM interface to display information about the VxVM devices.