In scheduled or unscheduled maintenance, are users automatically redirected to a backup/failover server to ensure continuous uptime, or will the website/service remain completely inaccessible until the maintenance is complete?

It depends on the setup, Basic websites will go completely offline and show an error page until the work is finished. However, advanced websites use automatic backup systems that instantly reroute users.
الرجاء تسجيل الدخول للسؤال والإجابة والمشاركة والإبداء والتصويت.