Amazon EC2 I/O Performance: Local Ephemeral Disks vs. RAID�0 Striped EBS Volumes – blog.dt.org
I 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
Creating an EBS-backed AMI from an S3-backed AMI
The recent introduction of Boot From EBS for EC2 opens up a lot of new possibilities. But there are some bootstrapping issues to deal with. There aren't many EBS-backed AMI's available yet and, given the rather complex process involved in porting them, it may take a while for them to show up. This article will walk through the process of converting a popular S3-based AMI to an EBS-backed AMI.
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