create backup file list to HTML in Windows Server 2012 R2.

list-backupfiles.ps1

$OnPremisePolicy = Get-WBPolicy

$Backups = @{
  Folder = $Folder
  FileName = $FileName
}

$BackupList = @()

foreach($backup in $OnPremisePolicy){
  foreach($File in $OnPremisePolicy.FilesSpecsToBackup){
    $BackupFile =  New-Object psobject -Property $Backups
    $BackupFile.Folder = $File.FilePath
    $backupFile.FileName = $file.FileName
    $BackupList += $BackupFile
  }
}

if((@(Get-Command | where {$_.name -eq "Get-ObPolicy"}).Count) -eq 1) {
  $AzurePolicy = Get-OBPolicy

  foreach($backup in $AzurePolicy){
    foreach($DsLists in $backup.DsList){
      foreach($Dataset in $DsLists.SpecList){
        $BackupFile =  New-Object psobject -Property $Backups
        $BackupFile.Folder = $Dataset.FileSpec
        $backupFile.FileName = $Dataset.FileName
        $BackupList += $BackupFile
      }
    }
  }
}

$HtmlFile = ".\" + [environment]::MachineName + '_backupFiles.html'

$BackupList | ConvertTo-Html -Title "WIndows Backup File List" -as Table >  $HtmlFile