There was a great blog post the other week that explained the multi-tenancy stuff really well: http://perfcap.blogspot.com/2011/03/understanding-and-using-amaz

There was a great blog post the other week that explained the multi-tenancy stuff really well: http://perfcap.blogspot.com/2011/03/understanding-and-using-amazon-ebs.html http://perfcap.blogspot.com/2011/03/understanding-and-using-... Somewhere there's an HN discussion for it too.