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ESX/ESXi 4.x example
The command is the same for ESX/ESXi 4.x. The output shown is for ESX 4.0:
# esxcli nmp device list
naa.50002ac000b40125
Device Display Name: 3PARdata Fibre Channel Disk (naa.50002ac000b40125)
Storage Array Type: VMW_SATP_DEFAULT_AA
Storage Array Type Device Config:
Path Selection Policy: VMW_PSP_RR
Path Selection Policy Device Config:
{policy=rr,iops=1000,bytes=10485760,useANO=0;lastPathIndex=3:
NumIOsPending=0,numBytesPending=0}
Working Paths: vmhba5:C0:T0:L25, vmhba5:C0:T1:L25, vmhba4:C0:T0:L25,
vmhba4:C0:T1:L25
For ESX 4.1, the iops will be 100 for the device list output shown above.
Script Alternative for Path Policy Changes on Storage Devices without a Host Reboot
If a reboot of the ESX/ESXi host to affect path policy changes through SATP on a large number of
existing, previously presented storage devices is not desirable, the path policy changes on a batch
of LUNs can be made by scripting esxcli commands.
Create a script that uses the following commands:
1. List all the HP 3PAR devices present on the host:
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
46 Configuring the Host for a Fibre Channel Connection