Multipathing Policy through PowerCLI

To retrieve Multipath Policy of all devices connected with particular host.

Get-ScsiLun –vmhost esxi01.vclass.local –LunType disk

To view the Canonical Name of SCSI devices

Get-ScsiLun –VmHost esxi01.vclass.local –LunType disk | select CanonicalName

copy the Canonical Name of device which need to modify

To change the Multipath Policy of the device to RoundRobin.

Get-ScsiLun –CanonicalName “naa.600003*” –VmHost esxi01.vclass.local | Set-ScsiLun –MultipathPolicy  RoundRobin

Declare a Variable and store the preferred path available for selected device because this will be required parameter for configuring Fixed path policy.

$pathPreffer = Get-SCSILunPath –SCSIPath (Get-SCSILun –CanonicalName “naa.600003*” –vmhost esxi01.vclass.local)

To change the Multipath Policy of the device to Fixed.

Get-VMhhost esxi01.vclass.local | Get-SCSILun –CanonicalName “naa.600003*” | Set-SCSILun –MultiPathPolicy “Fixed” –PreferredPath $pathPreffer