Dell PowerStore 5200T EMC PowerStore Host Configuration Guide - Page 42

Configuring NMP Round Robin on a PowerStore Volume Already Presented to the ESXi Host

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Configuring NMP Round Robin on a PowerStore Volume Already Presented to the ESXi Host Follow this method to configure NMP Round Robin on a PowerStore volume that is already presented to the ESXi host, using ESXi command line: About this task NOTE: Use this method only for PowerStore volumes that are already presented to the host. For volumes not yet presented to the host, see Configuring vSphere NMP Round Robin as the default pathing policy for all volumes. NOTE: Using this method does not impact any non-PowerStore volumes that are presented to the ESXi host. For details, see VMware Knowledge Article 1017760 (Changing the default pathing...) and VMware Knowledge Article 2069356 (Adjusting Round Robin IOPS...) on the VMware website. Steps 1. Open an SSH session to the host as root. 2. Run the following command to obtain the NAA of PowerStore LUNs presented to the ESXi host: #esxcli storage nmp path list | grep DellEMC -B1 The following example demonstrates issuing the esxcli storage nmp path list command to obtain the NAA of all PowerStore LUNs presented to the ESXi host: #esxcli storage nmp path list | grep DellEMC -B1 Device: naa.68ccf09800e8fa24ea37a1bc49d9f6b8 Device Display Name: DellEMC Fibre Channel Disk (naa.68ccf09800e8fa24ea37a1bc49d9f6b8) -- Device: naa.68ccf098003a54f16d2eddc3217da922 Device Display Name: DellEMC Fibre Channel Disk (naa.68ccf098003a54f16d2eddc3217da922) -Device: naa.68ccf09000000000c9f6d1acda1e4567 Device Display Name: DellEMC Fibre Channel RAID Ctlr (naa.68ccf09000000000c9f6d1acda1e4567) 3. Run the following command to modify the path selection policy on the PowerStore volume to Round Robin: #esxcli storage nmp device set --device="" --psp=VMW_PSP_RR For example: #esxcli storage nmp device set --device="naa.68ccf098003f1461569ea4750e9dac50" -psp=VMW_PSP_RR 4. Run the following command to set the NMP Round Robin path switching frequency on PowerStore volumes from the default value (1000 I/O packets) to 1: #esxcli storage nmp psp roundrobin deviceconfig set --device="" --iops=1 -type=iops For example: #esxcli storage nmp psp roundrobin deviceconfig set -device="naa.68ccf098003f1461569ea4750e9dac50" --iops=1 --type=iops 5. Run the following command to validate that changes were applied to all PowerStore LUNs: #esxcli storage nmp device list | grep -B1 -A4 DellEMC Each listed PowerStore LUN should have the following NMP settings: 42 Host Configuration for VMware vSphere ESXi

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Configuring NMP Round Robin on a PowerStore Volume Already Presented
to the ESXi Host
Follow this method to configure NMP Round Robin on a PowerStore volume that is already presented to the ESXi host, using
ESXi command line:
About this task
NOTE:
Use this method only for PowerStore volumes that are already presented to the host. For volumes not yet
presented to the host, see
Configuring vSphere NMP Round Robin as the default pathing policy for all volumes
.
NOTE:
Using this method does not impact any non-PowerStore volumes that are presented to the ESXi host.
For details, see
VMware Knowledge Article 1017760 (Changing the default pathing...)
and
VMware Knowledge Article 2069356
(Adjusting Round Robin IOPS...)
on the VMware website.
Steps
1.
Open an SSH session to the host as
root
.
2.
Run the following command to obtain the NAA of PowerStore LUNs presented to the ESXi host:
#esxcli storage nmp path list | grep DellEMC -B1
The following example demonstrates issuing the
esxcli storage nmp path list
command to obtain the NAA of all
PowerStore LUNs presented to the ESXi host:
#esxcli storage nmp path list | grep DellEMC -B1
Device: naa.68ccf09800e8fa24ea37a1bc49d9f6b8
Device Display Name: DellEMC Fibre Channel Disk
(naa.68ccf09800e8fa24ea37a1bc49d9f6b8)
--
Device: naa.68ccf098003a54f16d2eddc3217da922
Device Display Name: DellEMC Fibre Channel Disk
(naa.68ccf098003a54f16d2eddc3217da922)
--
Device: naa.68ccf09000000000c9f6d1acda1e4567
Device Display Name: DellEMC Fibre Channel RAID Ctlr
(naa.68ccf09000000000c9f6d1acda1e4567)
3.
Run the following command to modify the path selection policy on the PowerStore volume to Round Robin:
#esxcli storage nmp device set --device="<NAA ID>" --psp=VMW_PSP_RR
For example:
#esxcli storage nmp device set --device="naa.68ccf098003f1461569ea4750e9dac50" --
psp=VMW_PSP_RR
4.
Run the following command to set the NMP Round Robin path switching frequency on PowerStore volumes from the default
value (1000 I/O packets) to 1:
#esxcli storage nmp psp roundrobin deviceconfig set --device="<NAA ID>" --iops=1 --
type=iops
For example:
#esxcli storage nmp psp roundrobin deviceconfig set --
device="naa.68ccf098003f1461569ea4750e9dac50" --iops=1 --type=iops
5.
Run the following command to validate that changes were applied to all PowerStore LUNs:
#esxcli storage nmp device list | grep -B1 -A4 DellEMC
Each listed PowerStore LUN should have the following NMP settings:
42
Host Configuration for VMware vSphere ESXi