Server cron and backup to S3 – only starts when visiting Updraft backend

Hey,

would you have an idea what to look for here? I am using Updraft with S3 compatible storage. I have a server cron job that runs every 2 minutes. I see in the WP backend that the server cron runs (cron status plugin).

However, I noticed the backups do not run as scheduled. When I visited the backend of Updraft and stayed there for a few minutes, suddenly I noticed that the backup started.

It’s still running and not finished as it is running very slow for some reason.

But still strange that it did not get triggered – or only when I visited the backend of Updraft.

Thanks in advance for your help

Markus