I thought at least Reddit had learned the "don't use EBS" rule from past outages - I was bitten by the April/2011 outage and switched everything over to instanc

I thought at least Reddit had learned the "don't use EBS" rule from past outages - I was bitten by the April/2011 outage and switched everything over to instance storage shortly thereafter. For most applications I think architecting EBS out should be straightforward - instance storage doesn't put a huge single-point-of-failure in the middle of your app if you're doing replication, failover, and backups properly. And EBS seems to be the biggest component of the recent AWS failures upon which they've built a lot of their other systems.