you can have cubase autosave 1-10 *.bak files for you at an interval you set.
I think that goes back to at least SX3?
autosave is sometimes risky business in some programs but cubase does a good job.
cubase is stable enough over here but, you know, sh!t HAS happened, so …
I set my autosave to 3 with an interval of 10 minutes and it has rescued me a few times.