Home > Storage > PowerMax and VMAX > Storage Admin > Dell PowerMax and VMAX: Non-Disruptive and Minimally Disruptive Migration Best Practices and Operational Guide > Veritas Dynamic Multipathing
Configure the DMP tunable parameters to NDM required values. From the application host:
Check and modify the following DMP tunable parameters. If the parameter values are not set to the default values.
Note: Settings so the parameters can be returned to expected values following NDM migration.
DMP Tunable Parameter Default Value NDM Required Value
dmp_path_age 300 0
dmp_health_time 60 0
dmp_restore_interval 300 10
dmp_restore_cycles 10 10
iopolicy (per DMP node name) MinimumQ MinimumQ
Use the rescan command.
On Linux: /usr/bin/rescan_scsi_bus.sh followed by vxdisk scandisks to detect new paths. Use vxdmpadm to verify that the new paths are added.