AzStackHciHardware/AzStackHci.Hardware.Helpers.psm1

class HealthModel
{
    # Attributes for Azure Monitor schema
    [string]$Name #Name of the individual test/rule/alert that was executed. Unique, not exposed to the customer.
    [string]$Title #User-facing name; one or more sentences indicating the direct issue.
    [string]$Severity #Severity of the result (Critical, Warning, Informational, Hidden) – this answers how important the result is. Critical is the only update-blocking severity.
    [string]$Description #Detailed overview of the issue and what impact the issue has on the stamp.
    [psobject]$Tags #Key-value pairs that allow grouping/filtering individual tests. For example, "Group": "ReadinessChecks", "UpdateType": "ClusterAware"
    [string]$Status #The status of the check running (i.e. Failed, Succeeded, In Progress) – this answers whether the check ran, and passed or failed.
    [string]$Remediation #Set of steps that can be taken to resolve the issue found.
    [string]$TargetResourceID #The unique identifier for the affected resource (such as a node or drive).
    [string]$TargetResourceName #The name of the affected resource.
    [string]$TargetResourceType #The type of resource being referred to (well-known set of nouns in infrastructure, aligning with Monitoring).
    [datetime]$Timestamp #The Time in which the HealthCheck was called.
    [psobject]$AdditionalData #Property bag of key value pairs for additional information.
    [string]$HealthCheckSource #The name of the services called for the HealthCheck (I.E. Test-AzureStack, Test-Cluster).
}

class AzStackHciHardwareTarget : HealthModel {}

Import-LocalizedData -BindingVariable lhwTxt -FileName AzStackHci.Hardware.Strings.psd1

function Test-Processor
{
    <#
    .SYNOPSIS
        Test CPU
    .DESCRIPTION
        Test CPU
    #>

    [CmdletBinding()]
    param (
        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession
    )
    try
    {
        $sb = {
            $cimParams = @{
                ClassName = 'Win32_Processor'
                Property  = '*'
            }
            $cimData = @(Get-CimInstance @cimParams)
            return $cimData
        }
        $cimData = if ($PsSession)
        {
            Invoke-Command -Session $PsSession -ScriptBlock $sb
        }
        else
        {
            Invoke-Command -ScriptBlock $sb
        }

        $PropertyResult = @()
        $PropertySyncResult = @()
        $matchProperty = @(
            'Caption'
            'Family'
            'Manufacturer'
            'MaxClockSpeed'
            'NumberOfCores'
            'NumberOfEnabledCore'
            'NumberOfLogicalProcessors'
            'ThreadCount'
        )

        $desiredPropertyValue = @{
            AddressWidth                            = @{ value = 64; hint = '64-bit' }
            Architecture                            = @{ value = 9; hint = '64-bit' } # x64
            Availability                            = @{ value = 3; hint = 'Running/Full Power' } # Running/Full Power
            CpuStatus                               = @{ value = 1; hint = 'CPU Enabled' } # CPU Enabled
            DataWidth                               = @{ value = 64; hint = '64-bit' } # x64
            ProcessorType                           = @{ value = 3; hint = 'Central Processor' } # Central Processor
            Status                                  = @{ value = 'OK'; hint = 'OK' }
            SecondLevelAddressTranslationExtensions = @{ value = $true; hint = 'Virtualization Support' }
            VirtualizationFirmwareEnabled           = @{ value = $true; hint = 'Virtualization Support' }
            VMMonitorModeExtensions                 = @{ value = $true; hint = 'Virtualization Support' }
        }

        # if Hypervisorpresent is all true, SecondLevelAddressTranslationExtensions, VirtualizationFirmwareEnabled, VMMonitorModeExtensions should not be tested
        $CheckHyperVisor = IsHypervisorPresent -PsSession $PsSession
        if (($CheckHyperVisor | Select-Object -ExpandProperty HypervisorPresent) -notcontains $false)
        {
            Log-Info "HypervisorPresent: removing SecondLevelAddressTranslationExtensions, VirtualizationFirmwareEnabled, VMMonitorModeExtensions as properties to test"
            $desiredPropertyValue.Remove('SecondLevelAddressTranslationExtensions')
            $desiredPropertyValue.Remove('VirtualizationFirmwareEnabled')
            $desiredPropertyValue.Remove('VMMonitorModeExtensions')
        }
        else
        {
            Log-Info ($lhwTxt.HypervisorNotPresent -f (($CheckHyperVisor  | ForEach-Object {"{0}:{1}" -f $_.Name, $_.HypervisorPresent }) -join ',')) -Type Warning
        }

        $instanceIdStr = 'Write-Output "Machine: $($instance.SystemName), CPU: $($instance.DeviceId)"'
        # Check property sync for nodes individually
        $SystemNames = $cimData.CimSystemProperties.ServerName | Sort-Object | Get-Unique
        foreach ($systemName in $SystemNames)
        {
            $sData = $CimData | Where-Object { $_.CimSystemProperties.ServerName -eq $systemName }
            Log-Info -Message ($lhwTxt.ProcessorCount -f $systemName, $sData.Count)
            $PropertyResult += Test-DesiredProperty -CimData $sData -desiredPropertyValue $desiredPropertyValue -InstanceIdStr $InstanceIdStr -ValidatorName Hardware -Severity Warning
            $PropertySyncResult += Test-PropertySync -CimData $sData -MatchProperty $matchProperty -ValidatorName Hardware -Severity Warning
        }
        # Check property sync for all nodes as well
        $PropertySyncResult += Test-PropertySync -CimData $cimData -MatchProperty $matchProperty -ValidatorName Hardware -Severity Warning
        return @($PropertyResult + $PropertySyncResult)
    }
    catch
    {
        throw $_
    }
}

function IsHypervisorPresent
{
    <#
    .SYNOPSIS
        Retrieves HypervisorPresent property from Win32_ComputerSystem
    #>

    [cmdletbinding()]
    param (
        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession
    )
    try
    {
        $sb = {
            $cimParams = @{
                ClassName = 'Win32_ComputerSystem'
                Property  = 'HypervisorPresent'
            }
            $cimData = @(Get-CimInstance @cimParams)
            return $cimData
        }
        $cimData = if ($PsSession)
        {
            Invoke-Command -Session $PsSession -ScriptBlock $sb
        }
        else
        {
            Invoke-Command -ScriptBlock $sb
        }
        return $cimData
    }
    catch
    {
        throw $_
    }
}

function Test-NetAdapter
{
    <#
    .SYNOPSIS
        Test Network Adapter
    .DESCRIPTION
        Test Network Adapter
    #>

    [CmdletBinding()]
    param (
        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession
    )
    try
    {
        $sb = {
            $cimData = @(Get-NetAdapter -Physical | Where-Object { $_.NdisMedium -eq 0 -and $_.Status -eq 'Up' -and $_.NdisPhysicalMedium -eq 14 -and $_.PnPDeviceID -notlike 'USB\*'})
            return $cimData
        }
        $cimData = if ($PsSession)
        {
            Invoke-Command -Session $PsSession -ScriptBlock $sb
        }
        else
        {
            Invoke-Command -ScriptBlock $sb
        }

        if (-not $cimData)
        {
            $instanceResult = New-Object AzStackHciHardwareTarget
            $instanceResult.Name = 'AzStackHci_Hardware_NetworkAdapter'
            $instanceResult.Title = 'Test Network Adapater'
            $instanceResult.Severity = 'Critical'
            $instanceResult.Description = 'Checking Network Adapaters'
            $instanceResult.Remediation = 'https://aka.ms/hci-connect-chk'
            $instanceResult.TargetResourceID = if ([string]::IsNullOrEmpty($PsSession.PSComputerName)) { "Machine: $env:COMPUTERNAME, Class: NetworkAdapter" } else { "Machine: $($PsSession.PSComputerName), Class: NetworkAdapter" }
            $instanceResult.TargetResourceName = if ([string]::IsNullOrEmpty($PsSession.PSComputerName)) { "Machine: $env:COMPUTERNAME, Class: NetworkAdapter" } else { "Machine: $($PsSession.PSComputerName), Class: NetworkAdapter" }
            $instanceResult.TargetResourceType = 'NetworkAdapter'
            $instanceResult.Timestamp = [datetime]::UtcNow
            $instanceResult.HealthCheckSource = 'Environment Checker'
            $instanceResult.Status = 'Failed'
            $instanceResult.AdditionalData = New-Object -TypeName PSObject -Property @{
                Source    = if ([string]::IsNullOrEmpty($PsSession.PSComputerName)) { $ENV:COMPUTERNAME } else { $PsSession.PSComputerName }
                Resource  = $cimData
                Detail    = $lhwTxt.NicCount -f $instanceResult.TargetResourceID, '0'
                Status    = 'Failed'
                TimeStamp = [datetime]::UtcNow
            }
            return $InstanceResult
        }

        $PropertyResult = @()
        $PropertySyncResult = @()
        $GroupResult = @()
        $CountResult = @()

        # Blocking properties
        $criticalMatchProperty = @(
            'ActiveMaximumTransmissionUnit'
            'DriverDate'
            'DriverDescription'
            'DriverMajorNdisVersion'
            'DriverMinorNdisVersion'
            'DriverProvider'
            'DriverVersionString'
            'MajorDriverVersion'
            'MinorDriverVersion'
            'MtuSize'
        )

        # non-block warning properties
        $warningMatchProperty = @(
            'ReceiveLinkSpeed'
            'Speed'
            'TransmitLinkSpeed'
            'VlanID'
        )

        $desiredPropertyValue = @{
            AdminLocked                                      = $false
            ConnectorPresent                                 = $true
            EndpointInterface                                = $false
            ErrorDescription                                 = $null
            FullDuplex                                       = $true
            HardwareInterface                                = $true
            Hidden                                           = $false
            IMFilter                                         = $false
            InterfaceAdminStatus                             = @{ value = 1; hint = 'Up' } # Up
            InterfaceOperationalStatus                       = @{ value = 1; hint = 'Up' } # Up
            iSCSIInterface                                   = $false
            LastErrorCode                                    = $null
            MediaConnectState                                = @{ value = 1; hint = 'Connected' } # Connected
            MediaDuplexState                                 = 2
            NdisMedium                                       = @{ value = 0; hint = '802.3' } # 802.3
            NdisPhysicalMedium                               = @{ value = 14; hint = '802.3' } # 802.3
            OperationalStatusDownDefaultPortNotAuthenticated = $false
            OperationalStatusDownInterfacePaused             = $false
            OperationalStatusDownLowPowerState               = $false
            OperationalStatusDownMediaDisconnected           = $false
            #PromiscuousMode = $false
            State                                            = @{ value = 2; hint = 'Started' } # 802.3 # Started
            #Status = 'Up'
            Virtual                                          = $false
        }

        $groupProperty = @(
            'DriverDescription'
        )

        $minimum = 1
        $instanceIdStr = 'Write-Output "Machine: $($instance.SystemName), Interface: $($instance.Name), Description: $($instance.InterfaceDescription), Address: $($instance.PermanentAddress)"'
        # Check property sync for nodes individually
        $SystemNames = $cimData.CimSystemProperties.ServerName | Sort-Object | Get-Unique
        foreach ($systemName in $SystemNames)
        {
            $sData = $CimData | Where-Object { $_.CimSystemProperties.ServerName -eq $systemName }
            Log-Info -Message ($lhwTxt.NicCount -f $systemName, $sData.Count)
            # Make sure each system has the requisite number of Network Adapters
            $PropertyResult += Test-DesiredProperty -CimData $sData -desiredPropertyValue $desiredPropertyValue -InstanceIdStr $InstanceIdStr -ValidatorName Hardware -Severity Critical
            $CountResult += Test-Count -CimData $sData -minimum $minimum -ValidatorName 'Hardware' -Severity Critical
        }

        # Check property sync for all nodes as well
        $GroupResult += Test-GroupProperty -CimData $cimData -GroupProperty $groupProperty -MatchProperty $warningMatchProperty -ValidatorName Hardware -Severity Warning
        $GroupResult += Test-GroupProperty -CimData $cimData -GroupProperty $groupProperty -MatchProperty $criticalMatchProperty -ValidatorName Hardware -Severity Critical
        $InstanceCount += Test-InstanceCount -CimData $cimData -Severity Critical
        $InstanceCountByGroup += Test-InstanceCountByGroup -CimData $cimData -GroupProperty $groupProperty -Severity Critical
        # Finally, the all properties from the $matchProperty array have to be compared for all instances across all nodes.
        return @($PropertyResult + $GroupResult + $CountResult + $InstanceCountByGroup + $InstanceCount)
    }
    catch
    {
        throw $_
    }
}

function Test-Memory
{
    <#
    .SYNOPSIS
        Test Memory
    .DESCRIPTION
        Test Memory
    #>

    [CmdletBinding()]
    param (
        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession
    )
    try
    {
        $sb = {
            $cimParams = @{
                ClassName = 'Win32_PhysicalMemory'
                Property  = '*'
            }
            $cimData = @(Get-CimInstance @cimParams)
            return $cimData
        }
        $cimData = if ($PsSession)
        {
            Invoke-Command -Session $PsSession -ScriptBlock $sb
        }
        else
        {
            Invoke-Command -ScriptBlock $sb
        }

        $PropertyResult = @()
        $PropertySyncResult = @()
        $matchProperty = @(
            'ConfiguredClockSpeed'
            'ConfiguredVoltage'
            'MaxVoltage'
            'MemoryType'
            'SMBIOSMemoryType'
            'Speed'
            'TotalWidth'
            'TypeDetail'
        )

        $desiredPropertyValue = @{
            DataWidth  = @{ value = 64; hint = '64-bit' } # x64
            FormFactor = @{ value = 8; hint = 'DIMM' } # DIMM
        }

        # Check property sync for nodes individually
        $SystemNames = $cimData.CimSystemProperties.ServerName | Sort-Object | Get-Unique
        foreach ($systemName in $SystemNames)
        {
            $sData = $CimData | Where-Object { $_.CimSystemProperties.ServerName -eq $systemName }
            $instanceIdStr = 'Write-Output "Machine: $($Instance.CimSystemProperties.ServerName), Slot: $($instance.DeviceLocator), Tag: $($instance.Tag)"'
            $PropertyResult += Test-DesiredProperty -CimData $sData -desiredPropertyValue $desiredPropertyValue -InstanceIdStr $InstanceIdStr -ValidatorName Hardware -Severity Warning
            $totalMemory = $sData | Measure-Object -Property Capacity -Sum
            Log-Info -Message ($lhwTxt.TotalMemory -f $systemName, $($totalMemory.Sum / 1GB), $totalMemory.Count)
            $PropertySyncResult += Test-PropertySync -CimData $sData -MatchProperty $matchProperty -ValidatorName Hardware -Severity Warning
        }
        # Check property sync for all nodes as well
        $PropertySyncResult += Test-PropertySync -CimData $cimData -MatchProperty $matchProperty -ValidatorName Hardware -Severity Warning
        return @($PropertyResult + $PropertySyncResult)
    }
    catch
    {
        throw $_
    }
}

function Test-Gpu
{
    <#
    .SYNOPSIS
        Test Gpu
    .DESCRIPTION
        Test Gpu
    #>

    [CmdletBinding()]
    param (
        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession
    )
    try
    {
        $sb = {
            $cimParams = @{
                ClassName = 'Win32_VideoController'
                Property  = '*'
            }
            $cimData = @(Get-CimInstance @cimParams)
            return $cimData
        }
        $cimData = if ($PsSession)
        {
            Invoke-Command -Session $PsSession -ScriptBlock $sb
        }
        else
        {
            Invoke-Command -ScriptBlock $sb
        }

        $PropertyResult = @()
        $PropertySyncResult = @()
        $matchProperty = @(
            'AdapterRam'
            'Name'
            'DriverDate'
            'DriverVersion'
            'VideoMemoryType'
            'VideoProcessor'
        )

        $desiredPropertyValue = @{
            ConfigManagerErrorCode = @{ value = 0; hint = 'The device is working properly' } # The device is working properly
            Status                 = 'OK'
        }

        # Check property sync for nodes individually
        $SystemNames = $cimData.CimSystemProperties.ServerName | Sort-Object | Get-Unique
        foreach ($systemName in $SystemNames)
        {
            $sData = $CimData | Where-Object { $_.CimSystemProperties.ServerName -eq $systemName }
            $totalGpuRam = $sData | Measure-Object -Property AdapterRam -Sum
            Log-Info -Message ($lhwTxt.TotalGPUMem -f $systemName, $sData.Count, ($totalGpuRam.Sum / 1GB))
            $instanceIdStr = 'Write-Output "Machine: $($instance.SystemName), Device: $($instance.DeviceID) - $($instance.Name)"'
            $PropertyResult += Test-DesiredProperty -CimData $sData -desiredPropertyValue $desiredPropertyValue -InstanceIdStr $InstanceIdStr -ValidatorName Hardware -Severity Warning
            $PropertySyncResult += Test-PropertySync -CimData $sData -MatchProperty $matchProperty -ValidatorName Hardware -Severity Warning
        }
        # Check property sync for all nodes as well
        $PropertySyncResult += Test-PropertySync -CimData $cimData -MatchProperty $matchProperty -ValidatorName Hardware -Severity Warning
        return @($PropertyResult + $PropertySyncResult)
    }
    catch
    {
        throw $_
    }
}

function Test-Baseboard
{
    <#
    .SYNOPSIS
        Test Baseboard
    .DESCRIPTION
        Test Baseboard
    #>

    [CmdletBinding()]
    param (
        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession
    )
    try
    {
        $sb = {
            $cimParams = @{
                ClassName = 'Win32_Bios'
                Property  = '*'
            }
            $cimData = @(Get-CimInstance @cimParams)
            return $cimData
        }
        $cimData = if ($PsSession)
        {
            Invoke-Command -Session $PsSession -ScriptBlock $sb
        }
        else
        {
            Invoke-Command -ScriptBlock $sb
        }

        $PropertyResult = @()
        $PropertySyncResult = @()
        $matchProperty = @(
            #'BiosVersion' # this property is a string array and non-trivial to compare
            'Caption'
            'Description'
            'EmbeddedControllerMajorVersion'
            'EmbeddedControllerMinorVersion'
            'Manufacturer'
            'Name'
            'ReleaseDate'
            'SMBIOSBIOSVersion'
            'SMBIOSMajorVersion'
            'SMBIOSMinorVersion'
            'SoftwareElementId'
            'SystemBiosMajorVersion'
            'SystemBiosMinorVersion'
            'Version'
        )

        $desiredPropertyValue = @{
            SMBIOSPresent        = $true
            SoftwareElementState = @{ value = 3; hint = 'Running' } # Running
            Status               = 'OK'
        }

        # Check property sync for nodes individually
        $SystemNames = $cimData.CimSystemProperties.ServerName | Sort-Object | Get-Unique
        foreach ($systemName in $SystemNames)
        {
            $sData = $CimData | Where-Object { $_.CimSystemProperties.ServerName -eq $systemName }
            Log-Info -Message ($lhwTxt.TestBaseboard -f $systemName, $sData.Name, $sData.SerialNumber)
            $instanceIdStr = 'Write-Output "Machine: $($instance.CimSystemProperties.ServerName), Class: $($instance.CimSystemProperties.ClassName), Serial: $($instance.SerialNumber)"'
            $PropertyResult += Test-DesiredProperty -CimData $sData -desiredPropertyValue $desiredPropertyValue -InstanceIdStr $InstanceIdStr -ValidatorName Hardware -Severity Warning
            $PropertySyncResult += Test-PropertySync -CimData $sData -MatchProperty $matchProperty -ValidatorName Hardware -Severity Warning
        }
        # Check property sync for all nodes as well
        $PropertySyncResult += Test-PropertySync -CimData $cimData -MatchProperty $matchProperty -ValidatorName Hardware  -Severity Warning
        return @($PropertyResult + $PropertySyncResult)
    }
    catch
    {
        throw $_
    }
}

function Test-Model
{
    <#
    .SYNOPSIS
        Test Hardware Model is the same
    .DESCRIPTION
        Test Hardware Model is the same
    #>

    [CmdletBinding()]
    param (
        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession
    )
    try
    {
        $sb = {
            $cimParams = @{
                ClassName = 'Win32_ComputerSystem'
                Property  = '*'
            }
            $cimData = @(Get-CimInstance @cimParams)
            return $cimData
        }
        $cimData = if ($PsSession)
        {
            Invoke-Command -Session $PsSession -ScriptBlock $sb
        }
        else
        {
            Invoke-Command -ScriptBlock $sb
        }

        $PropertySyncResult = @()
        $matchProperty = @(
            'Manufacturer'
            'Model'
        )

        # Check property sync for nodes individually
        $SystemNames = $cimData.CimSystemProperties.ServerName | Sort-Object | Get-Unique
        foreach ($systemName in $SystemNames)
        {
            $sData = $CimData | Where-Object { $_.CimSystemProperties.ServerName -eq $systemName }
            Log-Info -Message ($lhwTxt.TestModel -f $systemName, $sData.Manufacturer, $sData.Model)
            $PropertySyncResult += Test-PropertySync -CimData $sData -MatchProperty $matchProperty -ValidatorName Hardware -Severity Critical
        }
        # Check property sync for all nodes as well
        $PropertySyncResult += Test-PropertySync -CimData $cimData -MatchProperty $matchProperty -ValidatorName Hardware  -Severity Critical
        return @($PropertyResult + $PropertySyncResult)
    }
    catch
    {
        throw $_
    }
}

function Test-PhysicalDisk
{
    <#
    .SYNOPSIS
        Test Physical Disk
    .DESCRIPTION
        Test Physical Disk
    #>

    [CmdletBinding()]
    param (
        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession
    )
    try
    {
        $sb = {
            $allowedBusTypes = @('SATA', 'SAS', 'NVMe', 'SCM')
            $allowedMediaTypes = @('HDD', 'SSD', 'SCM')
            $bootPhysicalDisk = Get-Disk | Where-Object {$_.IsBoot -or $_.IsSystem} | Get-PhysicalDisk
            $cimData = @(Get-StorageNode | Get-PhysicalDisk -PhysicallyConnected | Where-Object { $_.BusType -in $allowedBusTypes -and $_.MediaType -in $allowedMediaTypes -and $_.DeviceId -notin $bootPhysicalDisk.DeviceId})
            return $cimData
        }
        $cimData = if ($PsSession)
        {
            Invoke-Command -Session $PsSession -ScriptBlock $sb
        }
        else
        {
            Invoke-Command -ScriptBlock $sb
        }

        if (-not $cimData)
        {
            $instanceResult = New-Object AzStackHciHardwareTarget
            $instanceResult.Name = 'AzStackHci_Hardware_PhysicalDisk'
            $instanceResult.Title = 'Test Physical Disk'
            $instanceResult.Severity = 'Critical'
            $instanceResult.Description = 'Checking Physical Disk'
            $instanceResult.Remediation = 'https://aka.ms/hci-connect-chk'
            $instanceResult.TargetResourceID = if ([string]::IsNullOrEmpty($PsSession.PSComputerName)) { "Machine: $env:COMPUTERNAME, Class: Physical Disk" } else { "Machine: $($PsSession.PSComputerName), Class: PhysicalDisk" }
            $instanceResult.TargetResourceName = if ([string]::IsNullOrEmpty($PsSession.PSComputerName)) { "Machine: $env:COMPUTERNAME, Class: Physical Disk" } else { "Machine: $($PsSession.PSComputerName), Class: PhysicalDisk" }
            $instanceResult.TargetResourceType = 'Physical Disk'
            $instanceResult.Timestamp = [datetime]::UtcNow
            $instanceResult.HealthCheckSource = 'Environment Checker'
            $instanceResult.Status = 'Failed'
            $instanceResult.AdditionalData = New-Object -TypeName PSObject -Property @{
                Source    = if ([string]::IsNullOrEmpty($PsSession.PSComputerName)) { $ENV:COMPUTERNAME } else { $PsSession.PSComputerName }
                Resource  = $cimData
                Detail    = $lhwTxt.DiskTotal -f $instanceResult.TargetResourceID, '0','0'
                Status    = 'Failed'
                TimeStamp = [datetime]::UtcNow
            }
            return $InstanceResult
        }

        $PropertyResult = @()
        $GroupResult = @()
        $CountResult = @()
        $InstanceCount = @()
        $InstanceCountByGroup = @()

        $matchProperty = @(
            'FirmwareVersion'
        )

        $groupProperty = @(
            'FriendlyName'
        )

        $desiredPropertyValue = @{
            HealthStatus        = @{ value = @('Healthy', 0); hint = 'Healthy' } # Healthy
            IsIndicationEnabled = @{ value = @($false, $null); hint = 'Indicator Off' }
            OperationalStatus   = @{ value = @('OK', 2); hint = 'OK' }
        }

        $instanceIdStr = 'Write-Output "Machine: $($instance.CimSystemProperties.ServerName), Location: $($instance.PhysicalLocation), Unique ID: $($instance.UniqueId), Size: $("{0:N2}" -f ($instance.Size / 1TB)) TB"'
        # Check disk count for nodes individually
        [array]$SystemNames = $cimData.CimSystemProperties.ServerName | Sort-Object | Get-Unique
        foreach ($systemName in $SystemNames)
        {
            $sData = $CimData | Where-Object { $_.CimSystemProperties.ServerName -eq $systemName }
            $totalSize = $sData | Measure-Object -Property Size -Sum
            Log-Info -Message ($lhwTxt.DiskTotal -f $systemName, $($sData.Count), ('{0:N2}' -f ($totalSize.Sum / 1TB)))
            $PropertyResult += Test-DesiredProperty -CimData $sData -desiredPropertyValue $desiredPropertyValue -InstanceIdStr $InstanceIdStr -ValidatorName Hardware -Severity Warning

            # Split disks into type
            $SSD = $sData | Where-Object {$_.MediaType -match 'SSD|4' -and $_.BusType -match 'SAS|10|SATA|11'}
            $NVMe = $sData | Where-Object {$_.MediaType -match 'SSD|4' -and $_.BusType -match 'NVMe|17'}
            $SCM = $sData | Where-Object {$_.MediaType -match 'SCM|5'}
            $HDD = $sData | Where-Object {$_.MediaType -match 'HDD|3'}
            Log-Info ("Drive types detected HDD: {0}, SSD:{1}, NVMe:{2}, SCM:{3}" -f [bool]$HDD, [bool]$SSD, [bool]$NVMe, [bool]$SCM)

            # As per https://docs.microsoft.com/en-us/windows-server/storage/storage-spaces/storage-spaces-direct-hardware-requirements
            $systemCountResult = @()
            $countCommonParams = @{
                ValidatorName = 'Hardware'
                Severity = 'Critical'
            }
            # all flash minimum should be 2
            # Drive type present (capacity only) Minimum drives required (Windows Server) Minimum drives required (Azure Stack HCI)
            # All persistent memory (same model) 4 persistent memory 2 persistent memory
            # All NVMe (same model) 4 NVMe 2 NVMe
            # All SSD (same model) 4 SSD 2 SSD
            if ($SSD -xor $NVMe -xor $SCM)
            {
                $systemCountResult += Test-Count -cimData $sData -Minimum 2 @countCommonParams
            }

            # Drive type present Minimum drives required
            # Persistent memory + NVMe or SSD 2 persistent memory + 4 NVMe or SSD
            # NVMe + SSD 2 NVMe + 4 SSD
            # NVMe + HDD 2 NVMe + 4 HDD
            # SSD + HDD 2 SSD + 4 HDD

            if ($SCM -and ($NVMe -or $SSD)) {
                $systemCountResult += Test-Count -cimData $SCM -Minimum 2 @countCommonParams
                if ($NVMe) {
                    Log-Info ($lhwTxt.MinCountDiskType -f 'NVMe', '4', $systemName )
                    $systemCountResult += Test-Count -cimData $NVMe -Minimum 4 @countCommonParams
                }
                else {
                    Log-Info ($lhwTxt.MinCountDiskType -f 'SSD', '4', $systemName )
                    $systemCountResult += Test-Count -cimData $SSD -Minimum 4 @countCommonParams
                }
            }

            if ($NVMe -and $SSD) {
                Log-Info ($lhwTxt.MinCountDiskType -f 'NVMe', '2', $systemName )
                $systemCountResult += Test-Count -cimData $NVMe -Minimum 2 @countCommonParams
                Log-Info ($lhwTxt.MinCountDiskType -f 'SSD', '4', $systemName )
                $systemCountResult += Test-Count -cimData $SSD -Minimum 4 @countCommonParams
            }

            if ($NVMe -and $HHD) {
                Log-Info ($lhwTxt.MinCountDiskType -f 'NVMe', '2', $systemName )
                $systemCountResult += Test-Count -cimData $NVMe -Minimum 2 @countCommonParams
                Log-Info ($lhwTxt.MinCountDiskType -f 'HDD', '4', $systemName )
                $systemCountResult += Test-Count -cimData $HDD -Minimum 4 @countCommonParams
            }

            if ($SSD -and $HHD) {
                Log-Info ($lhwTxt.MinCountDiskType -f 'SSD', '2', $systemName )
                $systemCountResult += Test-Count -cimData $SSD -Minimum 2 @countCommonParams
                Log-Info ($lhwTxt.MinCountDiskType -f 'HDD', '4', $systemName )
                $systemCountResult += Test-Count -cimData $HDD -Minimum 4 @countCommonParams
            }

            if ($systemCountResult.count -eq 0) {
                Log-Info "We did not determine the disk combination correctly for $systemName. Checking minimum as per deployment guide." -Type Warning
                $systemCountResult += Test-Count -cimData $sData -Minimum 3 @countCommonParams
            }
            $CountResult += $systemCountResult
        }
        # Check property sync for all nodes
        $GroupResult += Test-GroupProperty -CimData $cimData -GroupProperty $groupProperty -MatchProperty $matchProperty -ValidatorName Hardware -Severity Warning

        # Split disks into type and check each server has the same count
        $allSSD = $cimData | Where-Object {$_.MediaType -match 'SSD|4' -and $_.BusType -match 'SAS|10|SATA|11'}
        $allNVMe = $cimData | Where-Object {$_.MediaType -match 'SSD|4' -and $_.BusType -match 'NVMe|17'}
        $allSCM = $cimData | Where-Object {$_.MediaType -match 'SCM|5'}
        $allHDD = $cimData | Where-Object {$_.MediaType -match 'HDD|3'}
        if ($allSSD) {
            Log-Info ($lhwTxt.DiskInstanceCountByType -f 'SSD')
            $InstanceCount += Test-InstanceCount -CimData $allSSD  -Severity Warning
        }
        if ($allNVMe) {
            Log-Info ($lhwTxt.DiskInstanceCountByType -f 'NVMe')
            $InstanceCount += Test-InstanceCount -CimData $allNVMe -Severity Warning
        }
        if ($allSCM) {
            Log-Info ($lhwTxt.DiskInstanceCountByType -f 'SCM')
            $InstanceCount += Test-InstanceCount -CimData $allSCM -Severity Warning
        }
        if ($allHDD) {
            Log-Info ($lhwTxt.DiskInstanceCountByType -f 'HDD')
            $InstanceCount += Test-InstanceCount -CimData $allHDD -Severity Warning
        }

        if ($SystemNames.Count -eq 1)
        {
            # Single Node deployments should be all flash
            [array]$CheckSingleNodeAllFlash = CheckSingleNodeAllFlash -CimData $cimData
        }

        # Do all servers have the same count regardless of type
        $InstanceCount += Test-InstanceCount -CimData $cimData -Severity Warning
        Log-Info ($lhwTxt.DiskInstanceCountByType -f 'ALL')

        # Finally, the all properties from the $matchProperty array (Firmware) have to be compared for all instances
        # across all nodes grouped by property (FriendlyName)
        $InstanceCountByGroup += Test-InstanceCountByGroup -CimData $cimData -GroupProperty $groupProperty -Severity Warning
        return @($PropertyResult + $GroupResult + $CountResult + $InstanceCount + $InstanceCountByGroup + $CheckSingleNodeAllFlash)
    }
    catch
    {
        throw $_
    }
}

function Test-TpmVersion
{
    [CmdletBinding()]
    param (
        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession,

        [Parameter()]
        $version = '2.0'
    )

    $tpms = @()
    $InstanceResults = @()
    $sb = {
        $cim = Get-CimInstance -Namespace root/cimv2/Security/MicrosoftTpm -ClassName Win32_Tpm
        if (-not $cim)
        {
            $cim = New-Object PSObject
        }
        return $cim
    }
    if ([string]::IsNullOrEmpty($PsSession))
    {
        $tpms += Invoke-Command -ScriptBlock $sb
    }
    else
    {
        $tpms += Invoke-Command -Session $PsSession -ScriptBlock $sb
    }

    foreach ($tpm in $tpms)
    {
        $computerName = if ([string]::IsNullOrEmpty($tpm.PSComputerName)) { $env:COMPUTERNAME } else { $tpm.PSComputerName }

        Log-Info -Message ($lhwTxt.TestTpmVersion -f $computerName, $version)

        # Test properties
        $InstanceResults += foreach ($instance in $tpm)
        {
            $instanceId = "Machine: $computerName, Class: Tpm, Manufacturer ID: $($instance.ManufacturerId)"
            $instanceVersion = $instance.SpecVersion -split ',' | Select-Object -First 1
            Log-Info -Message ($lhwTxt.Test -f 'TPM', $instanceId)

            $instanceResult = New-Object AzStackHciHardwareTarget
            $instanceResult.Name = 'AzStackHci_Hardware_Test_Tpm_Version'
            $instanceResult.Title = 'Test TPM Version'
            $instanceResult.Severity = 'Critical'
            $instanceResult.Description = "Checking TPM for desired version ($instanceVersion)"
            $instanceResult.Remediation = 'https://aka.ms/hci-connect-chk'
            $instanceResult.TargetResourceID = $instanceId
            $instanceResult.TargetResourceName = $instanceId
            $instanceResult.TargetResourceType = 'Tpm'
            $instanceResult.Timestamp = [datetime]::UtcNow
            $instanceResult.HealthCheckSource = 'Environment Checker'
            $AdditionalData = @()
            $AdditionalData += New-Object -TypeName PSObject -Property @{
                Source    = 'Version'
                Resource  = $instanceVersion
                Detail    = "$instanceId Tpm version is $instanceVersion"
                Status    = if ($instanceVersion -eq $version) { 'Succeeded' } else { 'Failed' }
                TimeStamp = [datetime]::UtcNow
            }
            $instanceResult.AdditionalData = $AdditionalData
            $instanceResult.Status = if ($AdditionalData.Status -contains 'Failed') { 'Failed' } else { 'Succeeded' }
            $instanceResult
        }
    }
    return $InstanceResults
}

function Test-TpmProperties
{
    [CmdletBinding()]
    param (
        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession
    )
    try
    {
        $tpms = @()
        $InstanceResults = @()
        $sb = {
            Get-Tpm
        }
        if ([string]::IsNullOrEmpty($PsSession))
        {
            $tpms += Invoke-Command -ScriptBlock $sb
        }
        else
        {
            $tpms += Invoke-Command -Session $PsSession -ScriptBlock $sb
        }
        foreach ($tpm in $tpms)
        {
            $passed = $false
            $computerName = if ([string]::IsNullOrEmpty($tpm.PSComputerName)) { $env:COMPUTERNAME } else { $tpm.PSComputerName }
            $desiredPropertyValue = @{
                TpmPresent         = $true #(Get-CimInstance -Namespace root/cimv2/Security/MicrosoftTpm -ClassName Win32_Tpm) is null
                TpmReady           = $true #IsActivated()
                TpmEnabled         = $true #IsEnabled()
                TpmActivated       = $true #IsActivated()
                #TpmOwned = $true #IsOwned()
                #RestartPending = $false #GetPhysicalPresenceRequest()?
                ManagedAuthLevel   = 'Full' #GetOwnerAuth()??
                OwnerClearDisabled = $false #IsOwnerClearDisabled()
                AutoProvisioning   = 'Enabled' #IsAutoProvisioningEnabled()
                LockedOut          = $false #IsLockedOut()
                LockoutCount       = 0 #GetCapLockoutInfo()
            }
            Log-Info -Message ($lhwTxt.TestTpm -f $computerName, $tpm.ManufacturerIdTxt, $tpm.ManufacturerVersion)

            # Test properties
            $InstanceResults += foreach ($instance in $tpm)
            {
                $instanceId = "Machine: $computerName, Class: Tpm, Manufacturer ID: $($tpm.ManufacturerId)"

                $instanceResult = New-Object AzStackHciHardwareTarget
                $instanceResult.Name = 'AzStackHci_Hardware_Test_Tpm_Instance_Properties'
                $instanceResult.Title = 'Test TPM'
                $instanceResult.Severity = 'Critical'
                $instanceResult.Description = 'Checking TPM for desired properties'
                $instanceResult.Remediation = 'https://aka.ms/hci-connect-chk'
                $instanceResult.TargetResourceID = $instanceId
                $instanceResult.TargetResourceName = $instanceId
                $instanceResult.TargetResourceType = 'Tpm'
                $instanceResult.Timestamp = [datetime]::UtcNow
                $instanceResult.HealthCheckSource = 'Environment Checker'
                $AdditionalData = @()

                foreach ($propertyName in $desiredPropertyValue.Keys)
                {
                    $detail = $null
                    $passed = $false
                    if ($instance.$propertyName -ne $desiredPropertyValue.$propertyName)
                    {
                        $passed = $false
                        $detail = $lhwTxt.UnexProp -f $propertyName, $instance.$propertyName, $desiredPropertyValue.$propertyName
                        Log-Info -Message $detail -Type Warning
                    }
                    else
                    {
                        $passed = $true
                    }
                    $AdditionalData += New-Object -TypeName PSObject -Property @{
                        Source    = $propertyName
                        Resource  = $instance.$propertyName
                        Detail    = $detail
                        Status    = if ($passed) { 'Succeeded' } else { 'Failed' }
                        TimeStamp = [datetime]::UtcNow
                    }
                }
                $instanceResult.AdditionalData = $AdditionalData
                $instanceResult.Status = if ($AdditionalData.Status -contains 'Failed') { 'Failed' } else { 'Succeeded' }
                $instanceResult
            }
        }
        return $InstanceResults
    }
    catch
    {
        throw $_
    }
}

function Test-TpmCertificates
{
    [CmdletBinding()]
    param (
        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession
    )
    try
    {
        $allowedKeyUsage = '2.23.133.8.1' # Endorsement Key Certificate
        $allowedAlgorithms = @(
            '1.2.840.113549.1.1.11' # SHA256
            '1.2.840.113549.1.1.12' # SHA384
            '1.2.840.113549.1.1.13' # SHA512
            '1.2.840.10045.4.3.2' # SHA256ECDSA
            '1.2.840.10045.4.3.3' # SHA384ECDSA
            '1.2.840.10045.4.3.4' # SHA512ECDSA
        )
        $tpmKeys = @()
        $InstanceResults = @()
        $sb = {
            try
            {
                $tpmKeys += Get-TpmEndorsementKeyInfo -ErrorAction SilentlyContinue
            }
            catch {}
            return $tpmKeys
        }
        if ([string]::IsNullOrEmpty($PsSession))
        {
            $tpmKeys += Invoke-Command -ScriptBlock $sb
        }
        else
        {
            $tpmKeys += Invoke-Command -Session $PsSession -ScriptBlock $sb
        }

        $InstanceResults += foreach ($tpmKey in $tpmKeys)
        {
            $computerName = if ([string]::IsNullOrEmpty($tpmKey.PSComputerName)) { $env:COMPUTERNAME } else { $tpmKey.PSComputerName }
            $tpmCert = $tpmKey.ManufacturerCertificates + $tpmKey.AdditionalCertificates
            $instanceId = $computerName + " " + $tpmKey.ManufacturerCertificates.subject + " + thumbrpint=" + $tpmKey.ManufacturerCertificates.Thumbprint

            $instanceResult = New-Object AzStackHciHardwareTarget
            $instanceResult.Name = 'AzStackHci_Hardware_Test_Tpm_Certificate_Properties'
            $instanceResult.Title = 'Test TPM'
            $instanceResult.Severity = 'Critical'
            $instanceResult.Description = 'Checking TPM for desired certificates'
            $instanceResult.Remediation = 'https://aka.ms/hci-connect-chk'
            $instanceResult.TargetResourceID = $instanceId
            $instanceResult.TargetResourceName = $instanceId
            $instanceResult.TargetResourceType = 'TpmEndorsementKeyInfo'
            $instanceResult.Timestamp = [datetime]::UtcNow
            $instanceResult.HealthCheckSource = 'Environment Checker'
            $AdditionalData = @()

            foreach ($cert in $tpmCert)
            {
                $validCert = $false
                $certDetail = $null
                # Test TPM certificate expiration
                $now = Get-Date
                $sinceIssued = New-TimeSpan -Start $cert.NotBefore -End $now
                $untilExpired = New-TimeSpan -Start $now -End $cert.NotAfter
                $currentCert = $sinceIssued.Days -gt 0 -and $untilExpired.Days -gt 0

                # Test TPM signature algorithm
                $validAlgo = $cert.SignatureAlgorithm.Value -in $allowedAlgorithms

                # Test TPM certificate Enhanced Key Usage
                $validUsage = $cert.EnhancedKeyUsageList.ObjectId -contains $allowedKeyUsage

                # Display certificate properties
                $validCert = $currentCert -and $validAlgo -and $validUsage
                [string[]]$certDetail = "TPM certificate $($cert.Thumbprint), valid = $validCert"
                $certDetail += " Issuer: $($cert.Issuer)"
                $certDetail += " Subject: $($cert.Subject)"
                $certDetail += " Key Usage: $($cert.EnhancedKeyUsageList.FriendlyName -join ', '), valid = $validUsage"
                #$cert.Extensions.Oid.FriendlyName | Foreach-Object { $certDetail += " Extension: $_" }
                $certDetail += " Valid from: $($cert.NotBefore) to $($cert.NotAfter), valid = $currentCert"
                $certDetail += " Algorithm: $($cert.SignatureAlgorithm.FriendlyName), valid = $validAlgo"
                $foundValidCert = $foundValidCert -or $validCert

                $AdditionalData += New-Object -TypeName PSObject -Property @{
                    Source    = $cert.Thumbprint
                    Resource  = "Current: $currentCert. Valid Algorithm: $validAlgo. Valid Key Usage: $validUsage."
                    Detail    = ($certDetail -join "`r")
                    Status    = if ($validCert) { 'Succeeded' } else { 'Failed' }
                    TimeStamp = [datetime]::UtcNow
                }
            }
            $instanceResult.AdditionalData = $AdditionalData
            $instanceResult.Status = if ($AdditionalData.Status -contains 'Succeeded') { 'Succeeded' } else { 'Failed' }
            $instanceResult
        }
        return $InstanceResults
    }
    catch
    {
        throw $_
    }
}

function Test-SecureBoot
{
    [CmdletBinding()]
    param (
        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession
    )
    try
    {
        $secureBoots = @()
        if ([string]::IsNullOrEmpty($PsSession))
        {
            $secureBoots += Confirm-SecureBootUEFI
        }
        else
        {
            $secureBoots += Invoke-Command -Session $PsSession -ScriptBlock { Confirm-SecureBootUEFI }
        }

        $InstanceResults = @()
        $InstanceResults += foreach ($SecureBootUEFI in $secureBoots)
        {
            $instanceResult = New-Object AzStackHciHardwareTarget
            $instanceResult.Name = 'AzStackHci_Hardware_Test_Secure_Boot'
            $instanceResult.Title = 'Test Secure Boot'
            $instanceResult.Severity = 'Critical'
            $instanceResult.Description = 'Checking Secure Boot'
            $instanceResult.Remediation = 'https://aka.ms/hci-connect-chk'
            $instanceResult.TargetResourceID = if ([string]::IsNullOrEmpty($SecureBootUEFI.PSComputerName)) { "Machine: $env:COMPUTERNAME, Class: SecureBoot" } else { "Machine: $($SecureBootUEFI.PSComputerName), Class: SecureBoot" }
            $instanceResult.TargetResourceName = if ([string]::IsNullOrEmpty($SecureBootUEFI.PSComputerName)) { "Machine: $env:COMPUTERNAME, Class: SecureBoot" } else { "Machine: $($SecureBootUEFI.PSComputerName), Class: SecureBoot" }
            $instanceResult.TargetResourceType = 'SecureBoot'
            $instanceResult.Timestamp = [datetime]::UtcNow
            $instanceResult.HealthCheckSource = 'Environment Checker'
            $instanceResult.Status = if ($SecureBootUEFI) { 'Succeeded' } else { 'Failed' }
            $instanceResult.AdditionalData = New-Object -TypeName PSObject -Property @{
                Source    = if ([string]::IsNullOrEmpty($SecureBootUEFI.PSComputerName)) { $ENV:COMPUTERNAME } else { $SecureBootUEFI.PSComputerName }
                Resource  = $SecureBootUEFI
                Detail    = $lhwTxt.SecureBoot -f $SecureBootUEFI, 'True'
                Status    = if ($SecureBootUEFI) { 'Succeeded' } else { 'Failed' }
                TimeStamp = [datetime]::UtcNow
            }
            $instanceResult
        }
        return $InstanceResults
    }
    catch
    {
        throw $_
    }
}

function Test-StoragePool
{
    [CmdletBinding()]
    param (
        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession
    )
    try
    {
        $StoragePoolsExist = @()
        $sb = {
            [bool](Get-StoragePool -IsPrimordial:$false -ErrorAction SilentlyContinue)
        }
        if ([string]::IsNullOrEmpty($PsSession))
        {
            $StoragePoolsExist += Invoke-Command -ScriptBlock $sb
        }
        else
        {
            $StoragePoolsExist += Invoke-Command -Session $PsSession -ScriptBlock $sb
        }

        $InstanceResults = @()
        $InstanceResults += foreach ($StoragePool in $StoragePoolsExist)
        {
            $instanceResult = New-Object AzStackHciHardwareTarget
            $instanceResult.Name = 'AzStackHci_Hardware_Test_No_StoragePools'
            $instanceResult.Title = 'Test Storage Pools do not exist'
            $instanceResult.Severity = 'Critical'
            $instanceResult.Description = 'Checking no storage pools exist'
            $instanceResult.Remediation = 'https://aka.ms/hci-connect-chk'
            $instanceResult.TargetResourceID = if ([string]::IsNullOrEmpty($StoragePool.PSComputerName)) { "Machine: $env:COMPUTERNAME, Class: StoragePool" } else { "Machine: $($StoragePool.PSComputerName), Class: StoragePool" }
            $instanceResult.TargetResourceName = if ([string]::IsNullOrEmpty($StoragePool.PSComputerName)) { "Machine: $env:COMPUTERNAME, Class: StoragePool" } else { "Machine: $($StoragePool.PSComputerName), Class: StoragePool" }
            $instanceResult.TargetResourceType = 'StoragePool'
            $instanceResult.Timestamp = [datetime]::UtcNow
            $instanceResult.HealthCheckSource = 'Environment Checker'
            $instanceResult.Status = if ($StoragePool) { 'Failed' } else { 'Succeeded' }
            $instanceResult.AdditionalData = New-Object -TypeName PSObject -Property @{
                Source    = 'StoragePool'
                Resource  = if ([bool]$StoragePool) { "Present" } else { "Not present" }
                Detail    = $lhwTxt.StoragePoolFail -f $StoragePool.Count, '0'
                Status    = if ($StoragePool) { 'Failed' } else { 'Succeeded' }
                TimeStamp = [datetime]::UtcNow
            }
            $instanceResult
        }
        return $InstanceResults
    }
    catch
    {
        throw $_
    }
}

function Test-FreeSpace
{
    <#
    .SYNOPSIS
        Test free space
    #>

    [CmdletBinding()]
    param (
        [Parameter()]
        [string]
        $Drive = $env:SystemDrive,

        [Parameter()]
        [int64]
        $Threshold = 30GB,

        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession
    )
    try
    {
        $cimData = @()
        $InstanceResults = @()
        $drive = $drive.TrimEnd("\")
        $sb = {
            $cimData = Get-CimInstance -ClassName Win32_LogicalDisk -Property * | Where-Object DeviceID -EQ $args[0]
            return $cimData
        }
        if ([string]::IsNullOrEmpty($PsSession))
        {
            $cimData += Invoke-Command -ScriptBlock $sb -ArgumentList $Drive
        }
        else
        {
            $cimData += Invoke-Command -Session $PsSession -ScriptBlock $sb -ArgumentList $Drive
        }
        $InstanceResults += foreach ($cim in $cimData)
        {
            $computerName = if ($cim.CimSystemProperties.ServerName) { $cim.CimSystemProperties.ServerName } else { $ENV:COMPUTERNAME}
            $instanceId = "Machine: $computerName, Class: Disk, DriveLetter: $($cim.DeviceID)"

            $instanceResult = New-Object AzStackHciHardwareTarget
            $instanceResult.Name = 'AzStackHci_Hardware_Test_Disk_Space'
            $instanceResult.Title = 'Test Disk Space'
            $instanceResult.Severity = 'Warning'
            $instanceResult.Description = 'Checking Disk Space'
            $instanceResult.Remediation = 'https://aka.ms/hci-connect-chk'
            $instanceResult.TargetResourceID = $instanceId
            $instanceResult.TargetResourceName = $instanceId
            $instanceResult.TargetResourceType = 'Disk'
            $instanceResult.Timestamp = [datetime]::UtcNow
            $instanceResult.HealthCheckSource = 'Environment Checker'
            $instanceResult.AdditionalData = New-Object -TypeName PSObject -Property @{
                Source    = $computerName
                Resource  = $cim.DeviceID
                Detail    = $lhwTxt.DiskSpace -f $computerName, $cim.DeviceID, [int]($cim.FreeSpace / 1GB), [int]($Threshold / 1GB)
                Status    = if ($cim.FreeSpace -gt $Threshold) { 'Succeeded' } else { 'Failed' }
                TimeStamp = [datetime]::UtcNow
            }
            $instanceResult.Status = $instanceResult.AdditionalData.Status
            $instanceResult
        }
        return $InstanceResults
    }
    catch
    {
        throw $_
    }
}

function Test-Volume
{
    <#
    .SYNOPSIS
        Test free space
    #>

    [CmdletBinding()]
    param (
        [Parameter()]
        [string[]]
        $Drive = @('C','D'),

        # TO DO: Implement Free Space check
        [Parameter()]
        [int64]
        $Threshold = 30GB,

        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession
    )
    try
    {
        $cimData = @()
        $CountResult = @()
        $InstanceCountByGroup = @()

        $sb = {
            $cimData = Get-Volume | Where-Object DriveLetter -in $args
            return $cimData
        }
        if ([string]::IsNullOrEmpty($PsSession))
        {
            $cimData += Invoke-Command -ScriptBlock $sb -ArgumentList $Drive
        }
        else
        {
            $cimData += Invoke-Command -Session $PsSession -ScriptBlock $sb -ArgumentList $Drive
        }

        $groupProperty = @(
            'DriveLetter'
        )

        $SystemNames = $cimData.CimSystemProperties.ServerName | Sort-Object | Get-Unique
        foreach ($systemName in $SystemNames)
        {
            $sData = $CimData | Where-Object { $_.CimSystemProperties.ServerName -eq $systemName }
            Log-Info -Message ($lhwTxt.VolumeCount -f $systemName, ($Drive -join ','), $sData.Count)
            # Make sure each system has the requisite number of Network Adapters
            $CountResult += Test-Count -CimData $sData -minimum $Drive.Count -ValidatorName 'Hardware' -Severity Critical
        }
        # Make sure each node has the same count by group
        $InstanceCountByGroup += Test-InstanceCountByGroup -CimData $cimData -GroupProperty $groupProperty -Severity Critical
        # Finally, the all properties from the $matchProperty array have to be compared for all instances across all nodes.
        return @($CountResult + $InstanceCountByGroup)
    }
    catch
    {
        throw $_
    }
}

function CheckSingleNodeAllFlash
{
        param ($cimData)
        # Split disks into type and check each server has the same count
        $allSSD = $cimData | Where-Object {$_.MediaType -match 'SSD|4' -and $_.BusType -match 'SAS|10|SATA|11'}
        $allNVMe = $cimData | Where-Object {$_.MediaType -match 'SSD|4' -and $_.BusType -match 'NVMe|17'}
        $allSCM = $cimData | Where-Object {$_.MediaType -match 'SCM|5'}
        $allHDD = $cimData | Where-Object {$_.MediaType -match 'HDD|3'}
        $className = $CimData.CimSystemProperties.ClassName -split '_' | Select-Object -Last 1
        $instanceId = $CimData.CimSystemProperties.ServerName | Sort-Object | Get-Unique

        Log-Info $lhwTxt.SingleNodeAllFlash -f $instanceId

        # check if they are all flash
        if ($allSSD -xor $allNVMe -and !$allSCM -and !$allHDD)
        {
            $Status = 'Succeeded'
            $type = 'Info'
        }
        else
        {
            $Status = 'Failed'
            $type = 'Warning'
        }

        $detail = $lhwTxt.SingleNodeAllFlashDetail -f $instanceId,("HDD: {0}, SSD:{1}, NVMe:{2}, SCM:{3}" -f [bool]$allHDD, [bool]$allSSD, [bool]$allNVMe, [bool]$allSCM)
        Log-Info $detail -Type $type

        $instanceResult = New-Object AzStackHciHardwareTarget
        $instanceResult.Name = 'AzStackHci_Hardware_Test_SingleNode_AllFlash'
        $instanceResult.Title = 'Test Single Node All Flash'
        $instanceResult.Severity = 'Critical'
        $instanceResult.Description = "Checking single node is all flash"
        $instanceResult.Remediation = 'https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/storage-spaces-direct-hardware-requirements#minimum-number-of-drives-excludes-boot-drive'
        $instanceResult.TargetResourceID = $instanceId
        $instanceResult.TargetResourceName = $instanceId
        $instanceResult.TargetResourceType = $className
        $instanceResult.Timestamp = [datetime]::UtcNow
        $instanceResult.HealthCheckSource = 'Environment Checker'
        $AdditionalData = @()
        $AdditionalData += New-Object -TypeName PSObject -Property @{
            Source    = "$className Drive Type"
            Resource  = "HDD: {0}, SSD:{1}, NVMe:{2}, SCM:{3}" -f [bool]$allHDD, [bool]$allSSD, [bool]$allNVMe, [bool]$allSCM
            Detail    = $detail
            Status    = $status
            TimeStamp = [datetime]::UtcNow
        }
        $instanceResult.AdditionalData = $AdditionalData
        $instanceResult.Status = if ($AdditionalData.Status -contains 'Failed') { 'Failed' } else { 'Succeeded' }
        $instanceResult
}

function Test-MinCoreCount
{
    <#
    .SYNOPSIS
        Get minimum core count
    .DESCRIPTION
        Get core count from local machine to use as minimum core count
        Expecting data from PsSessions to include local machine indicating ECE.
    #>

    [CmdletBinding()]
    param (
        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession
    )
    try
    {
        $sb = {
            $cimParams = @{
                ClassName = 'Win32_Processor'
                Property  = 'NumberOfCores'
            }
            $cimData = @(Get-CimInstance @cimParams)
            return $cimData
        }
        $cimData = if ($PsSession)
        {
            Invoke-Command -Session $PsSession -ScriptBlock $sb
        }
        else
        {
            Invoke-Command -ScriptBlock $sb
        }

        $instanceResults = @()

        # Set min cores to local machine
        # This should only apply the scenario where there is a PsSession to all nodes,
        # and one of the nodes is also the local machine i.e. ECE invocation
        $RequiredTotalNumberOfCores = GetTotalNumberOfCores -cimData ($cimData | Where-Object { $_.CimSystemProperties.ServerName -like "$($ENV:COMPUTERNAME)*"})

        if ($RequiredTotalNumberOfCores)
        {
            [array]$SystemNames = $cimData.CimSystemProperties.ServerName | Where-Object {$PSITEM -notlike "$($ENV:COMPUTERNAME)*"} | Sort-Object | Get-Unique
            foreach ($systemName in $SystemNames)
            {
                $sData = $CimData | Where-Object { $_.CimSystemProperties.ServerName -eq $systemName }
                $TotalNumberOfCores = GetTotalNumberOfCores -cimData $sData
                if ($TotalNumberOfCores)
                {
                    $detail = $lhwTxt.CheckMinCoreCount -f $SystemName, $TotalNumberOfCores, $RequiredTotalNumberOfCores
                    if ($TotalNumberOfCores -ge $RequiredTotalNumberOfCores)
                    {
                        $status = 'Succeeded'
                        Log-Info -message $detail
                    }
                    else
                    {
                        $status = 'Failed'
                        Log-Info -message $detail -Type Warning
                    }
                }
                else
                {
                    $detail = $lhwTxt.UnexpectedCoreCount -f 'Unavailable','1'
                    $status = 'Skipped'
                    Log-Info -message $detail -Type Warning
                }

                $instanceResult = New-Object AzStackHciHardwareTarget
                $instanceResult.Name = 'AzStackHci_Hardware_Test_Minimum_CPU_Cores'
                $instanceResult.Title = 'Test Minimum CPU Cores'
                $instanceResult.Severity = 'Warning'
                $instanceResult.Description = "Checking minimum CPU cores"
                $instanceResult.Remediation = 'https://aka.ms/hci-connect-chk'
                $instanceResult.TargetResourceType = $cimParams.className
                $instanceResult.Timestamp = [datetime]::UtcNow
                $instanceResult.HealthCheckSource = 'Environment Checker'
                $instanceResult.TargetResourceID = $systemName
                $instanceResult.TargetResourceName = $systemName
                $AdditionalData = @()
                $AdditionalData += New-Object -TypeName PSObject -Property @{
                    Source    = $className
                    Resource  = 'Core Count'
                    Detail    = $detail
                    Status    = $status
                    TimeStamp = [datetime]::UtcNow
                }
                $instanceResult.AdditionalData = $AdditionalData
                $instanceResult.Status = $status
                $instanceResults += $instanceResult
            }
        }
        else
        {
            Log-info $lhwTxt.SkippedCoreCount -type Warning
        }
        return $instanceResults
    }
    catch
    {
        throw $_
    }
}

function GetTotalNumberOfCores
{
    <#
    .SYNOPSIS
        Multiply number of cores by number of processors
    .DESCRIPTION
        Multiply number of cores by number of processors
    #>


    param ($cimData)

    try {
        if ($cimData)
        {
            $numberOfCores = $cimData | Select-Object -ExpandProperty NumberOfCores | Sort-Object | Get-Unique
            if ($numberOfCores.count -ne 1)
            {
                throw ($lhwTxt.UnexpectedCoreCount -f $numberOfCores.count, '1')
            }
            else
            {
                return ($numberOfCores * $cimData.count)
            }
        }
        else
        {
            throw $lhwTxt.NoCoreReference
        }
    }
    catch
    {
        Log-Info ($lhwTxt.UnableCoreCount -f $_) -Type Warning
    }
}

Export-ModuleMember -Function Test-*
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