It depends how much it would cost you to maintain vs the cost of a possible downtime. There are things that are fairly easy to make redundant. I don't know any

It depends how much it would cost you to maintain vs the cost of a possible downtime. There are things that are fairly easy to make redundant. I don't know anything about their infrastructure, but I doubt building a failover would be trivial. Even if you had it in place, the risk of something occuring as you switch back and forth might not be worth it if you expect your regular setup to come back up within a reasonable time frame. Most people around here know how close to impossible it is to replicate real world usage on a test system, and how much overhead it adds to any change you make to your production system if you want the others to follow.