The Usage side panel is a helpful tool that allows you to easily keep track of how much space you are using with the files you have uploaded for your Web site. (Each Web hosting account includes a specific amount of space for uploading files, measured in megabytes.)
If you have more than one Web site associated with the customer ID you logged in with, you can click on the Domain drop-down menu to switch between domain names.
The following figures display in the side panel:
Allocated: This figure is the total amount of megabytes you have available.
Used: This figure is the number of megabytes you have used.
Remaining: This figure tells you how many megabytes of space you have left for uploading files.