Amazon EC2 I/O Performance: Local Ephemeral Disks vs. RAID�0 Striped EBS Volumes – blog.dt.orgI recently ran into an issue with I/O bandwidth in EC2 that produced some unexpected results. As part of my day job, I built a system to run clustered deployments of enterprise software within AWS. The enterprise software I chose for the prototype is, as it turns out, very sensitive to I/O bandwidth, and my first attempt at a clustered deployment using m1.large instances with only ephemeral disks
