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VIrtualization HA challenge

Subject: VIrtualization HA challenge
From: richard.pieri-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org (Richard Pieri)
Date: Mon, 2 May 2011 19:36:10 -0400
In-reply-to: <4DBF122E.6040108-5a1Jt6qxUNc@public.gmane.org>
References: <b734bc194ea843e9fa9a90f7bdd7ea8f.squirrel@webmail.ci.net> <4DBF122E.6040108@vl.com>

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.

References:
- VIrtualization HA challenge
  - From: tmetro-blu-5a1Jt6qxUNc at public.gmane.org (Tom Metro)

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