VIrtualization HA challenge

[Richard Pieri]

Expanding clouds isn't HA.  Failover clusters isn't HA.  The AWS outage a couple of weeks ago is demonstrable proof of that.  HA is a process.  HA is a design philosophy.  This blog post is a few months old now, but it is worth reading specifically because of the AWS outage a few weeks ago.

http://techblog.netflix.com/2010/12/5-lessons-weve-learned-using-aws.html

Specifically lesson #3.  It works.  How many Netflix users noticed problems with the service during the AWS outage?  Not many.

That and five bucks....

--Rich P.