VMware LUN Path Selection Policy ( PSP )

clip_image0024[1]When provisioning a new VMware host important things to configure

1) NTP Server
2) IP of Management with DNS Name
3) Portgroup Names
4) Syslog Server
5) SNMP Trap for monitoring
6) Renaming Local Datastore to something with the server name other than datastore1
7) Nic Teaming

Another thing that is also important to setup is the pass selection policy. Depending on the SAN Manufacturer they will tell you the recommended policy e.g. https://vstorage.wordpress.com/2013/03/28/optimising-vsphere-path-selection-for-nimble-storage/

1) Fixed
2) Round Robin
3) Recently used

Most of the time it will be Round Robin

This can be changed via Command Line

esxcli storage nmp satp set -s VMW_SATP_ALUA -P VMW_PSP_RR

or through the VMWare Client

Go to Configuration Tab on Host , go to Storage , Go to Properties of Datastore and click Manage Paths

When changed make sure no VM’s are on the host as this could disrupt them

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Tags: fixed, gui, host, psp, recently used, round robin, Vmware, VMware LUN Path Selection Policy, vmware vsphere

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