Because there are computer illiterate people get confused all the time when documents can be saved in the cloud or local, so Microsoft now chooses to make cloud the default location for saving documents. This helps many people, but it can also be dangerous if saving to the cloud fails.

The best way is saving to the local drive and letting OneDrive sync to the cloud. But you need to change settings in OneDrive. It can still be confusing.

Maybe it’s common knowledge but anyway, thinkserver can’t be turned to sleep.