HP 3PAR VMware ESX Implementation Guide

ESXi 5.x
# esxcli storage nmp device list | grep -i naa.50002ac | grep -v Device
naa.50002ac0005800ac
naa.50002ac003b800ac
naa.50002ac0039300ac
ESX/ESXi 4.x
# esxcli nmp device list | grep -i naa.50002ac | grep -v Device
naa.50002ac0005800ac
naa.50002ac003b800ac
naa.50002ac0039300ac
2. Change the I/O path policy to round robin for each device identified in the previous output:
ESXi 5.x
# esxcli storage nmp device set -d naa.50002ac0005800ac -P VMW_PSP_RR
ESX/ESXi 4.x
# esxcli nmp device setpolicy -d naa.50002ac0005800ac -P VMW_PSP_RR
3. Verify that the change has been made.
ESXi 5.x
# esxcli storage nmp device list -d naa.50002ac0005800ac
ESX/ESXi 4.x
# esxcli nmp device list -d naa.50002ac0005800ac
NOTE: If I/O is active to a LUN and an attempt is made to modify the path policy, a failure can
occur:
error during the configuration of the host: sysinfoException;
Status=Busy: Message=Unable to Set
If this problem occurs during an attempt to change the path policy, reduce the I/Os to that LUN
and then try making the desired changes.
Performance Considerations for Multiple Host Configurations
The information in this section should be considered when using multiple ESX hosts, (or other hosts
in conjunction with ESX hosts), that are connected in a fan-in configuration to a pair of HP 3PAR
StoreServ Storage ports.
Performance Considerations for Multiple Host Configurations 49