How to check the disk usage of a directory:
1.Login to your cPanel
Scroll down to the File section and Click on Disk Usage

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2. You will find the Folder and Directory using too much space.

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How to check the Bandwidth usage of your Domain:
3. Login to your cPanel
Scroll down to the Metric Section and Click on Bandwidth Icon:

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4. You will see the Bandwidth Usage of your Domain.

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