How to take website backup in plesk?
To take fullback of the website, do the following.
Step 1: In the home page, select Backup Manager under Websites & Domains.
Step 2: In the Backup Manager window, select Backup.
Step 3: In the resulting page, enter the backup name, mail id to send the notification. Enable the related backup content radio button and click OK.
Backup will be created as shown in the below image.