Dell PowerStore 1200T EMC PowerStore Host Configuration Guide - Page 43

Configuring High Performance Multipathing (HPP) with NVMe

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● Path Selection Policy: VMW_PSP_RR ● Path Selection Policy Device Config: policy=rr, iops=1 The following example demonstrates issuing the esxcli storage nmp device list command to validate that changes were applied to all PowerStore LUNs: NOTE: The first LUN is the SACD device. If a LUN is mapped as LUN-0, it does not appear. #esxcli storage nmp device list |grep -B1 -A4 DellEMC naa.68ccf09000000000c9f6d1acda1e4567 Device Display Name: DellEMC Fibre Channel RAID Ctlr (naa.68ccf09000000000c9f6d1acda1e4567) Storage Array Type: VMW_SATP_DEFAULT_AA Storage Array Type Device Config: {action_OnRetryErrors=off} Path Selection Policy: VMW_PSP_FIXED Path Selection Policy Device Config: {preferred=vmhba2:C0:T0:L0;current=vmhba2:C0:T0:L0} -naa.68ccf098003a54f16d2eddc3217da922 Device Display Name: DellEMC Fibre Channel Disk (naa.68ccf098003a54f16d2eddc3217da922) Storage Array Type: VMW_SATP_ALUA Storage Array Type Device Config: {implicit_support=on; explicit_support=off; explicit_allow=on; alua_followover=on; action_OnRetryErrors=off; {TPG_id=1,TPG_state=ANO}} Path Selection Policy: VMW_PSP_RR Path Selection Policy Device Config: {policy=rr,iops=1,bytes=10485760,useANO=0; lastPathIndex=0: NumIOsPending=0,numBytesPending=0} Configuring High Performance Multipathing (HPP) with NVMe PowerStore with NVMe/TCP or NVMe/FC supports the High Performance Multipathing Plugin (HPP). This section describes the method that is required for configuring high-performance multipathing for PowerStore volumes. NOTE: This method applies only to NVMe-oF. For best performance, follow these recommendations: ● Set the HPP Path Selection Policy (PSS) LB-IOPS on PowerStore volumes that are presented on the ESXi host. ● Set the PSS LB-IOPS path switching frequency to PowerStore volumes from the default value (1000 I/O packets) to 1. These settings ensure optimal distribution and availability of load between I/O paths to the PowerStore storage. Configuring HPP Round Robin as the Default Pathing Policy for All PowerStore Volumes Follow this method to configure HPP Round Robin as the default pathing policy for all PowerStore volumes, using the ESXi command line. About this task NOTE: Use this method when no PowerStore volume is presented to the host. PowerStore volumes that are already presented to the host are not affected by this method (unless they are unmapped from the host). NOTE: Using this method does not impact any non-PowerStore volumes that are presented to the ESXi host, or SCSI (FC/iSCSI) volumes. Steps 1. Open an SSH session to the host as root. Host Configuration for VMware vSphere ESXi 43

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●
Path Selection Policy: VMW_PSP_RR
●
Path Selection Policy Device Config: policy=rr, iops=1
The following example demonstrates issuing the
esxcli storage nmp device list
command to validate that
changes were applied to all PowerStore LUNs:
NOTE:
The first LUN is the SACD device. If a LUN is mapped as LUN-0, it does not appear.
#esxcli storage nmp device list
|grep -B1 -A4
DellEMC
naa.68ccf09000000000c9f6d1acda1e4567
Device Display Name: DellEMC Fibre Channel RAID Ctlr
(naa.68ccf09000000000c9f6d1acda1e4567)
Storage Array Type: VMW_SATP_DEFAULT_AA
Storage Array Type Device Config: {action_OnRetryErrors=off}
Path Selection Policy: VMW_PSP_FIXED
Path Selection Policy Device Config:
{preferred=vmhba2:C0:T0:L0;current=vmhba2:C0:T0:L0}
--
naa.68ccf098003a54f16d2eddc3217da922
Device Display Name: DellEMC Fibre Channel Disk
(naa.68ccf098003a54f16d2eddc3217da922)
Storage Array Type: VMW_SATP_ALUA
Storage Array Type Device Config:
{implicit_support=on; explicit_support=off; explicit_allow=on; alua_followover=on;
action_OnRetryErrors=off; {TPG_id=1,TPG_state=ANO}}
Path Selection Policy: VMW_PSP_RR
Path Selection Policy Device Config: {policy=rr,iops=1,bytes=10485760,useANO=0;
lastPathIndex=0: NumIOsPending=0,numBytesPending=0}
Configuring High Performance Multipathing (HPP) with NVMe
PowerStore with NVMe/TCP or NVMe/FC supports the High Performance Multipathing Plugin (HPP). This section describes
the method that is required for configuring high-performance multipathing for PowerStore volumes.
NOTE:
This method applies only to NVMe-oF.
For best performance, follow these recommendations:
●
Set the HPP Path Selection Policy (PSS) LB-IOPS on PowerStore volumes that are presented on the ESXi host.
●
Set the PSS LB-IOPS path switching frequency to PowerStore volumes from the default value (1000 I/O packets) to 1.
These settings ensure optimal distribution and availability of load between I/O paths to the PowerStore storage.
Configuring HPP Round Robin as the Default Pathing Policy for All
PowerStore Volumes
Follow this method to configure HPP Round Robin as the default pathing policy for all PowerStore volumes, using the ESXi
command line.
About this task
NOTE:
Use this method when no PowerStore volume is presented to the host. PowerStore volumes that are already
presented to the host are not affected by this method (unless they are unmapped from the host).
NOTE:
Using this method does not impact any non-PowerStore volumes that are presented to the ESXi host, or SCSI
(FC/iSCSI) volumes.
Steps
1.
Open an SSH session to the host as
root
.
Host Configuration for VMware vSphere ESXi
43