This Article will show you how to create a Backup in Windows Plesk
Step 1. Log into Windows Plesk
Step 2. Click on the arrow box then click on Backup & Restore (the Backup function will only be available if you have purchased the essentials backup)
Step 3. Click on Backup
Step 4. You can choose Full and Click the necessary boxes then click on OK ( You can decide What Content you wish to Backup, and Whether its to be a full or incremental backup )
Step 5. You can then Schedule your backup How often you would like to by following this Link :