Setting the multipathing policy

If you use Fibre Channel or iSCSI storage devices, it is highly recommended to have multiple paths between your hosts and SAN and to use multipathing. Depending on the recommendations made by your storage vendor, you have to set the multipathing policy to either Fixed, Most Recently Used (MRU), or Round Robin (RR).

Note

More information about multipathing policies can be found in VMware Knowledge Base article 1011340: Multipathing policies in ESXi 5.x and ESXi/ESX 4.x, http://kb.vmware.com/kb/1011340 .

You can use the Get-ScsiLun cmdlet to retrieve the current multipathing policy for your LUNs:

PowerCLI C:\> Get-VMHost -Name 192.168.0.133 | Get-ScsiLun |
>> Where-Object {$_.LunType -eq 'disk'} |
>> Select-Object -Property CanonicalName,LunType,MultipathPolicy


    CanonicalName                        LunType  MultipathPolicy
-------------                        -------  ---------------
naa.600a0b80001111550000f35b93e19350 disk   ...