$output = @()

foreach ($cluster in Get-Cluster) {
    $datastores = @()
    foreach ($esxi in $cluster | get-vmhost) {
        foreach ($datastore in $esxi | Get-Datastore){
            $result = "" | Select Datastore,ESXi,Cluster
            $result.Datastore = $datastore.Name
            $result.ESXi = $esxi.Name
            $result.Cluster = ($esxi | Get-Cluster).Name
            $datastores += $result
        }  
    }
    $output += $datastores | Group-Object -Property Datastore | Where -FilterScript {
        $_.Count -lt ($cluster | get-vmhost).Count
    } | Select-Object -ExpandProperty Group
}
$output

$Title = "90 Cluster same Datastore"
$Header =  "90 Cluster same Datastore"
$Comments = "Datastores in a Cluster are not configured on all Hosts."
$Display = "Table"
$Author = "evoila GmbH" 
$PluginVersion = 1.0
$PluginCategory = "vSphere"