Just saw this comment in a thread about Reddit’s problems with Amazon’s EBS.
Even worse than the EBS performance is Amazon does not offer any shared storage solutions between EC2 instances. You have to cobble together your own shared storage using NFS and EBS volumes
Exactly. People do want shared storage, using the same cloud security and cost model as EBS or EC2 themselves. Clearly S3 doesn’t fit the bill either, because there’s no way to make “normal” applications use it. What they want is what they get with the NFS over EC2/EBS hack, but integrated and supported by the provider instead of themselves. In other words, a cloud filesystem. Users are waking up to this need, and it’s about time filesystem developers started responding to it.