Question about disk for DHTMLX Export module to PDF/PNG service

We’ve used https://export.dhtmlx.com/scheduler since the first day, but recently we got critical issues with it.

The last one was yesterday with response: Internal server error. Error: Scheduler to pdf. Error: ENOSPC: no space left on device, write

I plan to selfhost the export service but I am afraid that we might run into this issue.

Could you please help to clarify how to configure data/cache retention? if not available, how to monitor and resolve disk issue?

Thanks!