Geplante Optimierung - Zeitplan per Script anpassen

function Set-DefragTaskSchedule {
    param(
        [string][ValidateSet("daily","weekly","monthly")]$schedule  
    )
    $settings = @{
        "daily" = @{Period = "P1D";Deadline = "P4D"}  
        "weekly" = @{Period = "P7D";Deadline = "P1M"}  
        "monthly" = @{Period = "P1M";Deadline = "P4M"}  
    }
    $xml = New-Object XML
    $taskfile = "C:\Windows\System32\Tasks\Microsoft\Windows\Defrag\ScheduledDefrag"  
    if (!(Test-Path $taskfile)){
        $xml = [xml]'<?xml version="1.0" encoding="UTF-16"?>  
<Task version="1.6" xmlns="http://schemas.microsoft.com/windows/2004/02/mit/task">  
  <RegistrationInfo>
    <Source>$(@%systemroot%\system32\defragsvc.dll,-800)</Source>
    <Author>$(@%systemroot%\system32\defragsvc.dll,-801)</Author>
    <Description>$(@%systemroot%\system32\defragsvc.dll,-802)</Description>
    <URI>\Microsoft\Windows\Defrag\ScheduledDefrag</URI>
    <SecurityDescriptor>D:AI(A;;FA;;;BA)(A;;FA;;;SY)(A;;FRFX;;;LS)(A;;FR;;;AU)</SecurityDescriptor>
  </RegistrationInfo>
  <Triggers />
  <Principals>
    <Principal id="LocalSystem">  
      <UserId>S-1-5-18</UserId>
      <RunLevel>HighestAvailable</RunLevel>
      <LogonType>InteractiveToken</LogonType>
    </Principal>
  </Principals>
  <Settings>
    <MultipleInstancesPolicy>IgnoreNew</MultipleInstancesPolicy>
    <DisallowStartIfOnBatteries>true</DisallowStartIfOnBatteries>
    <StopIfGoingOnBatteries>true</StopIfGoingOnBatteries>
    <AllowHardTerminate>true</AllowHardTerminate>
    <StartWhenAvailable>true</StartWhenAvailable>
    <RunOnlyIfNetworkAvailable>false</RunOnlyIfNetworkAvailable>
    <IdleSettings>
      <StopOnIdleEnd>true</StopOnIdleEnd>
      <RestartOnIdle>false</RestartOnIdle>
    </IdleSettings>
    <AllowStartOnDemand>true</AllowStartOnDemand>
    <Enabled>true</Enabled>
    <Hidden>false</Hidden>
    <RunOnlyIfIdle>false</RunOnlyIfIdle>
    <DisallowStartOnRemoteAppSession>false</DisallowStartOnRemoteAppSession>
    <UseUnifiedSchedulingEngine>true</UseUnifiedSchedulingEngine>
    <MaintenanceSettings>
      <Period>P7D</Period>
      <Deadline>P1M</Deadline>
      <Exclusive>false</Exclusive>
    </MaintenanceSettings>
    <WakeToRun>false</WakeToRun>
    <ExecutionTimeLimit>PT72H</ExecutionTimeLimit>
    <Priority>7</Priority>
  </Settings>
  <Actions Context="LocalSystem">  
    <Exec>
      <Command>%windir%\system32\defrag.exe</Command>
      <Arguments>-c -h -o -$</Arguments>
    </Exec>
  </Actions>
</Task>'  
    }else{
        $xml.Load($taskfile)
    }
    $xml.Task.Settings.MaintenanceSettings.Period = $settings[$schedule].Period
    $xml.Task.Settings.MaintenanceSettings.Deadline = $settings[$schedule].Deadline
    $xml.Task.Settings.Enabled = "true"  
    Unregister-ScheduledTask -TaskName ScheduledDefrag -TaskPath "\Microsoft\Windows\Defrag\" -Confirm:$false -EA SilentlyContinue  
    Register-ScheduledTask  -TaskName ScheduledDefrag -TaskPath "\Microsoft\Windows\Defrag\" -Xml $xml.OuterXml -Force | out-null  
}

Set-DefragTaskSchedule -schedule monthly