Worked at a FAANG, 5-7 was peanuts for the rotation I was on there. The interesting thing (I don't know if I liked it or not) was that when you're on call, that's all you do (even during normal hours, that is), no "normal" work/projects during that time (which relieves a giant burden for everyone NOT on call). At the end of the rotation, there is a proper hand-off to the next on call; every issue that came up is reviewed and a plan put in place to fix it "for good" (meaning a backlog task gets created and assigned to someone during the next sprint planning). If there's no planning to root-cause and fix the underlying problems, run.