If you are receiving a disk space usage warning and don't know which folder is using too much space from cPanel, this tutorial will be helpful.
Log into your cPanel account.
In the Files
section, click on the Disk Space Usage
In the Disk Space Usage area, you can see which folder/directory is using too much space, and you can check the disk usage of MySQL.
How to check Bandwidth Usage?
In the Metrics
section, click on Bandwidth
Now you can see bandwidth usage of your domain.