Get Last Backup Field in vCenter with Powershell.

#This is a little Powershell script that gets the last time a vm in the Cluster that it has been backed up.  Emails out if it has not been backed up in 14days.

$daystoalert = 14

$vCenter = "vCenter server name"

add-pssnapin vmware.vimautomation.core

connect-viserver $vCenter

$today_date = get-date

$all_vms = get-cluster "Cluster Name" | get-vm | Sort-Object Name

foreach($vm in $all_vms)

{

    #check $vm for null?

    Try {

        $last_backup_date = $vm. CustomFields.Get_Item( "Last Backup")

        $last_backup_converted = get-date $last_backup_date

        $days_with_no_backups = New-TimeSpan -Start $last_backup_converted .DateTime -End $today_date. DateTime

        if ($days_with_no_backups .Days -gt $daystoalert)

        {

            Write-output " $($vm. Name),$( $days_with_no_backups.Days) "

        }

    }

    Catch {

        # VM was never backed up gets caught in this exception.

        Write-output " $($vm. Name), Never backed up"

    }

}