Does a WP site consumes memory resources when there are NO visitors?

I understand that every time a visitor goes to a website, it triggers the PHP code that then demands system resources.

My situation is that I have many websites, some not used, just sitting there, and I am wondering if they are demanding anything from my server.

I know that there is wp-cron file, that is supposed to work only if there is some visitor to the site. But what about google bots, do they count ?

If not – then how come these sites backup would still work and send the file to my e-mail?

p.s: I feel like this question should be phrased as a ZEN question: “If a WordPress is on a server – and no one listens – did it load?”

It’s not likely an unused site is using mach resources except for harddrive space. There may be something left in memory but on a typical server thats doubtfull.

google bots trigger the site exactly the same as a regular user except it doesnt load unnessasary files like javascript, css or images (except maybe for image search).

wp-cron I believe can be triggered using a cron job. I’m not sure if wordpress attemps to do this by default, It may vary depending on the server config.