Setup Guide

● Cisco nfnic lun_queue_depth_per_path - Cisco nfnic driver setting to set the LUN queue depth per path. The default value
for this setting is 32 (recommended). For details on Cisco nfnic settings, refer to the Cisco nfnic driver documentation on
the Cisco website.
● DiskSchedNumReqOutstanding - The total number of outstanding commands permitted from all virtual machines oollectively
on the host to a LUN. For details, refer to VMware vSphere documentation.
● Disk.SchedQuantum - The maximum number of consecutive "sequential" I/Os allowed from one VM before forcing a switch
to another VM. For details, refer to VMware vSphere documentation.
● Disk.DiskMaxIOSize - THe maximum I/O size ESX allows before splitting I/O requests. For details, refer to Setting the
Maximum I/O
● XCOPY (/DataMover/MaxHWTransferSize) - The maximum number of blocks used for XCOPY operations. For details, refer
to VMware vSphere documentation.
● vCenter Concurrent Clones (config.vpxd.ResourceManager.maxCostPerHost) - The maximum number of concurrent full
clone operations allowed (the default value is 8). For details, refer to VMware vSphere documentation.
Multipathing Software Configuration
Configuring Native Multipathing
PowerStore supports the Native Multipathing Plugin (NMP).
This section describes the procedure required for configuring native multipathing for PowerStore volumes.
For best performance, it is recommended to do as follows:
● Set the NMP Round Robin path selection policy on PowerStore volumes presented to the ESXi host.
● Set the NMP Round Robin 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 NMP Round Robin as the Default Pathing Policy for All
PowerStore Volumes
Follow this procedure to configure NMP Round Robin as the default pathing policy for all PowerStore volumes using the ESXi
command line.
About this task
NOTE:
As of VMware ESXi version 6.7, Patch Release ESXi670-201912001, the satp rule presented in this procedure is
already integrated into the ESXi kernel.
NOTE: Use this method when no PowerStore volume is presented to the host. PowerStore volumes already presented to
the host are not affected by this procedure (unless they are unmapped from the host).
NOTE: With ESXi 6.7 hosts connected to PowerStore, it is recommended to disable action_OnRetryErrors. For
details on this ESXi parameter, refer to VMware KB# 67006 (https://kb.vmware.com/s/article/67006).
Steps
1. Open an SSH session to the host as root.
2. Run the following command to configure the default pathing policy for newly defined PowerStore volumes to Round Robin
with path switching after each I/O packet:
esxcli storage nmp satp rule add -c tpgs_on -e "PowerStore" -M PowerStore -P VMW_PSP_RR -
O iops=1 -s VMW_SATP_ALUA -t vendor -V DellEMC -o disable_action_OnRetryErrors
NOTE: Use the disable_action_OnRetryErrors parameter only with ESXi 6.7 hosts.
This command also sets the NMP Round Robin path switching frequency for newly defined PowerStore volumes to switch
every I/O.
Host Configuration for VMware vSphere ESXi
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