function Get-LUNPathState {
    <#
            .SYNOPSIS
            No parameters needed. Just execute the script.
            .DESCRIPTION
            This script outputs the number of paths to each LUN.
     
            .EXAMPLE
            Get-LUNPathState -VMhosts 'esx01'
            Lists all LUN pats for ESXi host esx01.
            .EXAMPLE
            $esxihosts = Get-VMHost
            Get-LUNPathState -VMHosts $esxihosts
            Lists all LUN paths for all ESXi hosts in $esxihosts
    
            .NOTES
            Author: Patrick Terlisten, patrick@blazilla.de, Twitter @PTerlisten
    
            This script is provided "AS IS" with no warranty expressed or implied. Run at your own risk.
            This script is based on: http://www.vmwareadmins.com/list-the-path-and-path-state-for-every-vsphere-datastore-using-powercli/
            This work is licensed under a Creative Commons Attribution NonCommercial ShareAlike 4.0
            International License (https://creativecommons.org/licenses/by-nc-sa/4.0/).
    
            .LINK
            http://www.vcloudnine.de
    #>

    [CmdletBinding()]
    Param(
        [Parameter(Mandatory = $true, Position = 0, HelpMessage = 'ESXi Host', ValueFromPipeline = $true)]
        [Alias('Name')]
        [ValidateNotNullorEmpty()]
        $VMhosts
    )

    # Create empty hash table
    $ReportLunPathState = @()

    # Initialize counter variable
    $i = 0

    try {
        ForEach ($VMHost in $VMhosts) {
            # Increment counter variable
            $i++

            # Get all datastores from the current host
            $VMHostDatastores = Get-Datastore
    
            # Get all disks devices from the current host
            $VMHostScsiLuns = $VMHost | Get-ScsiLun -LunType disk


            ForEach ($VMHostScsiLun in $VMHostScsiLuns) {
                # Get LUN paths for each disk device
                $VMHostScsiLunPaths = $VMHostScsiLun | Get-ScsiLunPath
       
                # Count paths per disk device
                $ReportLunPathState += ($VMHostScsiLunPaths | Measure-Object) | Select-Object `
                    -Property @{N = 'Hostname'; E = { $VMHost.Name } }, `
                @{N = 'Datastore'; E = { $VMHostDatastores | Where-Object -FilterScript { ($_.extensiondata.info.vmfs.extent | ForEach-Object -Process { $_.diskname }) -contains $VMHostScsiLun.CanonicalName } | Select-Object -ExpandProperty name } }, `
                @{N = 'CanonicalName'; E = { $VMHostScsiLun.CanonicalName } }, `
                @{N = 'Paths'; E = { $_.Count } }, `
                @{N = 'Path State'; E = { $VMHostScsiLunPaths.State } }, `
                @{N = 'IsLocal'; E = { $VMHostScsiLun.IsLocal } }
            }
        }
    }

    catch {
        "Error was $_"
        $line = $_.InvocationInfo.ScriptLineNumber
        "Error was in Line $line"
    }

    finally {
        $ReportLunPathState
    }
}

$output = @()

foreach ($cluster in Get-Cluster) {
    $luns = @() #var to collect lun info from hosts
    foreach ($esxi in $cluster | get-vmhost) {
        foreach ($lun in ($esxi | Get-LUNPathState)) {
            $result = "" | Select Hostname, Datastore, Paths, PathState, IsLocal
            $result.Hostname = $lun.Hostname
            $result.Datastore = $lun.Datastore
            $result.Paths = $lun.Paths
            $result.PathState = $lun.PathState
            $result.IsLocal = $lun.IsLocal
            $luns += $result
        }
    }
    #check each ds and check if paths are consistent 
    foreach($ds in ($luns | Group-Object -Property Datastore)){
        $pathconsistency = $luns | Where-Object{$_.Datastore -eq $ds.Name} | Group-Object -Property Paths | Measure-Object #path consistents check
        $pathinfo = $luns | Where-Object{$_.Datastore -eq $ds.Name} | Group-Object -Property Paths
        
        if($pathconsistency.Count -gt 1 ){
            foreach($esxi in $pathinfo.group){
                $result = "" | Select Cluster, Hostname, Datastore, Paths
                $result.Cluster = (Get-VMhost -Name $esxi.Hostname).Parent
                $result.Hostname = $esxi.Hostname
                $result.Datastore = $esxi.Datastore
                $result.Paths = $esxi.Paths
                $output += $result
            }
            
        }
    }
}
$output

$Title = "90 Cluster same LUN same Path-Count"
$Header = "90 Cluster same LUN same Path-Count"
$Comments = "LUNs have no consistent Path Count"
$Display = "Table"
$Author = "evoila GmbH" 
$PluginVersion = 1.0
$PluginCategory = "vSphere"