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This script checks if the iovDisableIR setting is set to FALSE.
This script checks if the iovDisableIR setting is set to FALSE.
The script checks the current setting of the Intel IOMMU interrupt remapper (iovDisableIR).
The script needs a single parameter:
- vSphere Cluster
v0.2: Under development
Get-iovDisableIRSetting -Cluster LAB
Author: Patrick Terlisten,, Twitter @PTerlisten
This script is provided 'AS IS' with no warranty expressed or implied. Run at your own risk.
This work is licensed under a Creative Commons Attribution NonCommercial ShareAlike 4.0
International License (
ESXi hosts running ESXi 5.5 Patch 10, 6.0 Patch 4, 6.0 U3, or 6.5 may fail with a purple diagnostic screen
caused by non-maskable-interrupts (NMI) on HPE ProLiant Gen8 Servers.
Important vendor links:
ESXi host fails with intermittent NMI PSOD on HP ProLiant Gen8 servers (2149043)
Advisory: (Revision) VMware - HPE ProLiant Gen8 Servers running VMware ESXi 5.5 Patch 10, VMware ESXi 6.0 Patch 4,
or VMware ESXi 6.5 May Experience Purple Screen Of Death (PSOD): LINT1 Motherboard Interrupt
#Requires -Version 3.0
#Requires -Module VMware.VimAutomation.Core
# Parameter
Param (
[Parameter(Mandatory = $true)]
[string]$cluster = "Name of the vSphere Cluster"
# Get the ESXi hosts from the given cluster
$Hosts = Get-Cluster $cluster | Get-VMhost
# Create an empty array for the PowerShell object
$Results = @()
# Looping through the VMHosts
$Hosts | ForEach-Object {
$EsxCliv2 = Get-EsxCli -V2 -VMHost $_
$Arguments = $EsxCliv2.system.settings.kernel.list.CreateArgs()
$Arguments.option = "iovDisableIR"
$Output = $EsxCliv2.system.settings.kernel.list.Invoke($Arguments)
# Get the vendor and model of the current VMHost
$Model = $_ | Get-View | Select-Object @{N = 'Model'; E = {$_.Hardware.SystemInfo.Vendor + ' ' + $_.Hardware.SystemInfo.Model}}
# Properties for the PowerShell object
$PSOProps = @{
VMHost = $
Model = $Model.Model
iovDisableIR = $Output.configured
$Results += New-Object -TypeName psobject -Property $PSOProps
# Getting a list of the affected hosts by filtering the output for iovDisableIR = TRUE and server models with "Gen8"
$AffectedHosts = $Results | ? {$_.iovDisableIR -eq 'TRUE' -and $_.Model -like '*Gen8'} | Select-Object VMhost
$Count = ($AffectedHosts).Count
If ($Count -gt 0) {
Write-host `n
Write-Host -ForegroundColor Red "$Count hosts are affected. Please set iovDisableIR to FALSE on the affected hosts. The following hosts are affected:"
else {
Write-host `n
Write-Host -ForegroundColor Green "None of your hosts seeems to be affected."
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