[Plugin: Dashboard: Available Disk Space] How does it work?

Looks like an interesting plugin, but I was wondering how it works. Will it automatically check the remaining disk space for the user under whose account WP is installed? Will it work with all hosting providers, both Linux and Windows?

Hopefully you can provide a little bit more information here.

Thanks a lot.

http://ww.wp.xz.cn/extend/plugins/dashboard-available-disk-space/