How do I know how if I'm over my quota? How much disk space is my site using?
To find out how much disk space you are using, login to Plesk here:
Plesk Control Panel
Click on the domain name you want to manage, then click on "Report"
This will give you a report of how much space, traffic, etc your site is using.
To view your traffic stats, click on "Webalizer" or go here: