Upgrading Opmanager Server disk space?

Upgrading Opmanager Server disk space?

Hello,

We have OpManager running on VMWare VM CentOS 7, that is showing this message:

Low Disk Space Warning: The OpManager installed machine has only 5.0 GB of free disk space available. Please take the necessary precautions to ensure uninterrupted network monitoring.

Where can I find the procedure to upgrade disk space?

Thank you.