This isn't an EC2 issue, this is a SAN issue. Wether it is EBS or an NFS drive, meh. This is an architecting issue and while it is a result of the underlying hardware, the underlying hardware is not the constraint.
agreed it's largely an architecture issue, however poor EBS performance is contributing factor and he seems to go out of his way to say that it's not...
He went out of his way because most reddit user keep blaming AWS for the recent issues, as jedberg (reddit IT guy) recently mentioned the problem is not with AWS scaling but with reddit software scaling.
