Powershell Module is available in Parallels Remote Application Server 15.5.2 (16138) and above.

For Parallels RAS v18 and above

Create .ps1 in the file in the same folder with following commands:

$SecretPassword = ConvertTo-SecureString "YourRASPassword" -AsPlainText -Force
$Username = 'Administrator'
$Date = Get-Date -Format dd.MM.yyyy
Import-Module RASAdmin
New-RASSession -Username $Username -Password $SecretPassword
Invoke-RASExportSettings "%BackupfilesFolder%\$Date.dat2"

Note: This file will create a separate .dat2 file with current date as a file name.

To overwrite Backup files use the command below:

$SecretPassword = ConvertTo-SecureString "YourRASPassword" -AsPlainText -Force
$Username = 'Administrator'
Import-Module RASAdmin
New-RASSession -Username $Username -Password $SecretPassword
Invoke-RASExportSettings "%BackupfilesFolder%\Backup.dat2"

Open Windows Scheduler and create a New Task

Fill all fields in General Tab

Open Actions Tab > Click New

Add your .ps1 script file

Open Triggers Tab

Click New

Select schedule settings

Click OK

Examples for previous versions

Write backup files on specific dates:

$SecretPassword = ConvertTo-SecureString "YourRASPassword" -AsPlainText -Force
$Username = 'Administrator'
$Date = Get-Date -Format dd.MM.yyyy
Import-Module 'C:\Program Files (x86)\Parallels\ApplicationServer\Modules\PSAdmin\PSAdmin.dll'
New-RASSession -Username $Username -Password $SecretPassword
Invoke-ExportSettings "%BackupfilesFolder%\$Date.dat2"

Overwrite Backup file:

$SecretPassword = ConvertTo-SecureString "YourRASPassword" -AsPlainText -Force
$Username = 'Administrator'
Import-Module 'C:\Program Files (x86)\Parallels\ApplicationServer\Modules\PSAdmin\PSAdmin.dll'
New-RASSession -Username $Username -Password $SecretPassword
Invoke-ExportSettings "%BackupfilesFolder%\Backup.dat2"