Thanks @Kevin Kho, about RDS, @Anna Geller, I have setup multiAZ in the ones we´re using for our “old” prefect servers. And about snapshots, that´s what I thought, like a cold backup to spin up a new ec2 if there are problems with main one, but guessing if there is anything else more “hot”, for more resilency you can have the server in an ASG with 1 targeted and 1 desire host so it will be maintained running…but may be anyone else did the trick before! 🙂